diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.c | 6 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.c | 1258 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.h | 693 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_ioctl.c | 2 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_linux.h | 2 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_lrw.c | 10 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_stats.h | 18 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_super.c | 14 | ||||
| -rw-r--r-- | fs/xfs/xfs_mount.h | 1 | ||||
| -rw-r--r-- | fs/xfs/xfs_rw.c | 9 |
10 files changed, 895 insertions, 1118 deletions
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 94d3cdf..3f6b9e2 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -273,7 +273,7 @@ xfs_map_at_offset( lock_buffer(bh); bh->b_blocknr = bn; - bh->b_bdev = iomapp->iomap_target->pbr_bdev; + bh->b_bdev = iomapp->iomap_target->bt_bdev; set_buffer_mapped(bh); clear_buffer_delay(bh); } @@ -982,7 +982,7 @@ __linvfs_get_block( } /* If this is a realtime file, data might be on a new device */ - bh_result->b_bdev = iomap.iomap_target->pbr_bdev; + bh_result->b_bdev = iomap.iomap_target->bt_bdev; /* If we previously allocated a block out beyond eof and * we are now coming back to use it then we will need to @@ -1097,7 +1097,7 @@ linvfs_direct_IO( iocb->private = xfs_alloc_ioend(inode); ret = blockdev_direct_IO_own_locking(rw, iocb, inode, - iomap.iomap_target->pbr_bdev, + iomap.iomap_target->bt_bdev, iov, offset, nr_segs, linvfs_get_blocks_direct, linvfs_end_io_direct); diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 2a8acd3..cb77f99 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -31,77 +31,77 @@ #include <linux/kthread.h> #include "xfs_linux.h" -STATIC kmem_cache_t *pagebuf_zone; -STATIC kmem_shaker_t pagebuf_shake; +STATIC kmem_zone_t *xfs_buf_zone; +STATIC kmem_shaker_t xfs_buf_shake; STATIC int xfsbufd(void *); STATIC int xfsbufd_wakeup(int, gfp_t); -STATIC void pagebuf_delwri_queue(xfs_buf_t *, int); +STATIC void xfs_buf_delwri_queue(xfs_buf_t *, int); STATIC struct workqueue_struct *xfslogd_workqueue; struct workqueue_struct *xfsdatad_workqueue; -#ifdef PAGEBUF_TRACE +#ifdef XFS_BUF_TRACE void -pagebuf_trace( - xfs_buf_t *pb, +xfs_buf_trace( + xfs_buf_t *bp, char *id, void *data, void *ra) { - ktrace_enter(pagebuf_trace_buf, - pb, id, - (void *)(unsigned long)pb->pb_flags, - (void *)(unsigned long)pb->pb_hold.counter, - (void *)(unsigned long)pb->pb_sema.count.counter, + ktrace_enter(xfs_buf_trace_buf, + bp, id, + (void *)(unsigned long)bp->b_flags, + (void *)(unsigned long)bp->b_hold.counter, + (void *)(unsigned long)bp->b_sema.count.counter, (void *)current, data, ra, - (void *)(unsigned long)((pb->pb_file_offset>>32) & 0xffffffff), - (void *)(unsigned long)(pb->pb_file_offset & 0xffffffff), - (void *)(unsigned long)pb->pb_buffer_length, + (void *)(unsigned long)((bp->b_file_offset>>32) & 0xffffffff), + (void *)(unsigned long)(bp->b_file_offset & 0xffffffff), + (void *)(unsigned long)bp->b_buffer_length, NULL, NULL, NULL, NULL, NULL); } -ktrace_t *pagebuf_trace_buf; -#define PAGEBUF_TRACE_SIZE 4096 -#define PB_TRACE(pb, id, data) \ - pagebuf_trace(pb, id, (void *)data, (void *)__builtin_return_address(0)) +ktrace_t *xfs_buf_trace_buf; +#define XFS_BUF_TRACE_SIZE 4096 +#define XB_TRACE(bp, id, data) \ + xfs_buf_trace(bp, id, (void *)data, (void *)__builtin_return_address(0)) #else -#define PB_TRACE(pb, id, data) do { } while (0) +#define XB_TRACE(bp, id, data) do { } while (0) #endif -#ifdef PAGEBUF_LOCK_TRACKING -# define PB_SET_OWNER(pb) ((pb)->pb_last_holder = current->pid) -# define PB_CLEAR_OWNER(pb) ((pb)->pb_last_holder = -1) -# define PB_GET_OWNER(pb) ((pb)->pb_last_holder) +#ifdef XFS_BUF_LOCK_TRACKING +# define XB_SET_OWNER(bp) ((bp)->b_last_holder = current->pid) +# define XB_CLEAR_OWNER(bp) ((bp)->b_last_holder = -1) +# define XB_GET_OWNER(bp) ((bp)->b_last_holder) #else -# define PB_SET_OWNER(pb) do { } while (0) -# define PB_CLEAR_OWNER(pb) do { } while (0) -# define PB_GET_OWNER(pb) do { } while (0) +# define XB_SET_OWNER(bp) do { } while (0) +# define XB_CLEAR_OWNER(bp) do { } while (0) +# define XB_GET_OWNER(bp) do { } while (0) #endif -#define pb_to_gfp(flags) \ - ((((flags) & PBF_READ_AHEAD) ? __GFP_NORETRY : \ - ((flags) & PBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL) | __GFP_NOWARN) +#define xb_to_gfp(flags) \ + ((((flags) & XBF_READ_AHEAD) ? __GFP_NORETRY : \ + ((flags) & XBF_DONT_BLOCK) ? GFP_NOFS : GFP_KERNEL) | __GFP_NOWARN) -#define pb_to_km(flags) \ - (((flags) & PBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP) +#define xb_to_km(flags) \ + (((flags) & XBF_DONT_BLOCK) ? KM_NOFS : KM_SLEEP) -#define pagebuf_allocate(flags) \ - kmem_zone_alloc(pagebuf_zone, pb_to_km(flags)) -#define pagebuf_deallocate(pb) \ - kmem_zone_free(pagebuf_zone, (pb)); +#define xfs_buf_allocate(flags) \ + kmem_zone_alloc(xfs_buf_zone, xb_to_km(flags)) +#define xfs_buf_deallocate(bp) \ + kmem_zone_free(xfs_buf_zone, (bp)); /* - * Page Region interfaces. + * Page Region interfaces. * - * For pages in filesystems where the blocksize is smaller than the - * pagesize, we use the page->private field (long) to hold a bitmap - * of uptodate regions within the page. + * For pages in filesystems where the blocksize is smaller than the + * pagesize, we use the page->private field (long) to hold a bitmap + * of uptodate regions within the page. * - * Each such region is "bytes per page / bits per long" bytes long. + * Each such region is "bytes per page / bits per long" bytes long. * - * NBPPR == number-of-bytes-per-page-region - * BTOPR == bytes-to-page-region (rounded up) - * BTOPRT == bytes-to-page-region-truncated (rounded down) + * NBPPR == number-of-bytes-per-page-region + * BTOPR == bytes-to-page-region (rounded up) + * BTOPRT == bytes-to-page-region-truncated (rounded down) */ #if (BITS_PER_LONG == 32) #define PRSHIFT (PAGE_CACHE_SHIFT - 5) /* (32 == 1<<5) */ @@ -160,7 +160,7 @@ test_page_region( } /* - * Mapping of multi-page buffers into contiguous virtual space + * Mapping of multi-page buffers into contiguous virtual space */ typedef struct a_list { @@ -173,7 +173,7 @@ STATIC int as_list_len; STATIC DEFINE_SPINLOCK(as_lock); /* - * Try to batch vunmaps because they are costly. + * Try to batch vunmaps because they are costly. */ STATIC void free_address( @@ -216,83 +216,83 @@ purge_addresses(void) } /* - * Internal pagebuf object manipulation + * Internal xfs_buf_t object manipulation */ STATIC void -_pagebuf_initialize( - xfs_buf_t *pb, +_xfs_buf_initialize( + xfs_buf_t *bp, xfs_buftarg_t *target, loff_t range_base, size_t range_length, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { /* - * We don't want certain flags to appear in pb->pb_flags. + * We don't want certain flags to appear in b_flags. */ - flags &= ~(PBF_LOCK|PBF_MAPPED|PBF_DONT_BLOCK|PBF_READ_AHEAD); - - memset(pb, 0, sizeof(xfs_buf_t)); - atomic_set(&pb->pb_hold, 1); - init_MUTEX_LOCKED(&pb->pb_iodonesema); - INIT_LIST_HEAD(&pb->pb_list); - INIT_LIST_HEAD(&pb->pb_hash_list); - init_MUTEX_LOCKED(&pb->pb_sema); /* held, no waiters */ - PB_SET_OWNER(pb); - pb->pb_target = target; - pb->pb_file_offset = range_base; + flags &= ~(XBF_LOCK|XBF_MAPPED|XBF_DONT_BLOCK|XBF_READ_AHEAD); + + memset(bp, 0, sizeof(xfs_buf_t)); + atomic_set(&bp->b_hold, 1); + init_MUTEX_LOCKED(&bp->b_iodonesema); + INIT_LIST_HEAD(&bp->b_list); + INIT_LIST_HEAD(&bp->b_hash_list); + init_MUTEX_LOCKED(&bp->b_sema); /* held, no waiters */ + XB_SET_OWNER(bp); + bp->b_target = target; + bp->b_file_offset = range_base; /* * Set buffer_length and count_desired to the same value initially. * I/O routines should use count_desired, which will be the same in * most cases but may be reset (e.g. XFS recovery). */ - pb->pb_buffer_length = pb->pb_count_desired = range_length; - pb->pb_flags = flags; - pb->pb_bn = XFS_BUF_DADDR_NULL; - atomic_set(&pb->pb_pin_count, 0); - init_waitqueue_head(&pb->pb_waiters); - - XFS_STATS_INC(pb_create); - PB_TRACE(pb, "initialize", target); + bp->b_buffer_length = bp->b_count_desired = range_length; + bp->b_flags = flags; + bp->b_bn = XFS_BUF_DADDR_NULL; + atomic_set(&bp->b_pin_count, 0); + init_waitqueue_head(&bp->b_waiters); + + XFS_STATS_INC(xb_create); + XB_TRACE(bp, "initialize", target); } /* - * Allocate a page array capable of holding a specified number - * of pages, and point the page buf at it. + * Allocate a page array capable of holding a specified number + * of pages, and point the page buf at it. */ STATIC int -_pagebuf_get_pages( - xfs_buf_t *pb, +_xfs_buf_get_pages( + xfs_buf_t *bp, int page_count, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { /* Make sure that we have a page list */ - if (pb->pb_pages == NULL) { - pb->pb_offset = page_buf_poff(pb->pb_file_offset); - pb->pb_page_count = page_count; - if (page_count <= PB_PAGES) { - pb->pb_pages = pb->pb_page_array; + if (bp->b_pages == NULL) { + bp->b_offset = xfs_buf_poff(bp->b_file_offset); + bp->b_page_count = page_count; + if (page_count <= XB_PAGES) { + bp->b_pages = bp->b_page_array; } else { - pb->pb_pages = kmem_alloc(sizeof(struct page *) * - page_count, pb_to_km(flags)); - if (pb->pb_pages == NULL) + bp->b_pages = kmem_alloc(sizeof(struct page *) * + page_count, xb_to_km(flags)); + if (bp->b_pages == NULL) return -ENOMEM; } - memset(pb->pb_pages, 0, sizeof(struct page *) * page_count); + memset(bp->b_pages, 0, sizeof(struct page *) * page_count); } return 0; } /* - * Frees pb_pages if it was malloced. + * Frees b_pages if it was allocated. */ STATIC void -_pagebuf_free_pages( +_xfs_buf_free_pages( xfs_buf_t *bp) { - if (bp->pb_pages != bp->pb_page_array) { - kmem_free(bp->pb_pages, - bp->pb_page_count * sizeof(struct page *)); + if (bp->b_pages != bp->b_page_array) { + kmem_free(bp->b_pages, + bp->b_page_count * sizeof(struct page *)); } } @@ -300,79 +300,79 @@ _pagebuf_free_pages( * Releases the specified buffer. * * The modification state of any associated pages is left unchanged. - * The buffer most not be on any hash - use pagebuf_rele instead for + * The buffer most not be on any hash - use xfs_buf_rele instead for * hashed and refcounted buffers */ void -pagebuf_free( +xfs_buf_free( xfs_buf_t *bp) { - PB_TRACE(bp, "free", 0); + XB_TRACE(bp, "free", 0); - ASSERT(list_empty(&bp->pb_hash_list)); + ASSERT(list_empty(&bp->b_hash_list)); - if (bp->pb_flags & _PBF_PAGE_CACHE) { + if (bp->b_flags & _XBF_PAGE_CACHE) { uint i; - if ((bp->pb_flags & PBF_MAPPED) && (bp->pb_page_count > 1)) - free_address(bp->pb_addr - bp->pb_offset); + if ((bp->b_flags & XBF_MAPPED) && (bp->b_page_count > 1)) + free_address(bp->b_addr - bp->b_offset); - for (i = 0; i < bp->pb_page_count; i++) - page_cache_release(bp->pb_pages[i]); - _pagebuf_free_pages(bp); - } else if (bp->pb_flags & _PBF_KMEM_ALLOC) { + for (i = 0; i < bp->b_page_count; i++) + page_cache_release(bp->b_pages[i]); + _xfs_buf_free_pages(bp); + } else if (bp->b_flags & _XBF_KMEM_ALLOC) { /* - * XXX(hch): bp->pb_count_desired might be incorrect (see - * pagebuf_associate_memory for details), but fortunately + * XXX(hch): bp->b_count_desired might be incorrect (see + * xfs_buf_associate_memory for details), but fortunately * the Linux version of kmem_free ignores the len argument.. */ - kmem_free(bp->pb_addr, bp->pb_count_desired); - _pagebuf_free_pages(bp); + kmem_free(bp->b_addr, bp->b_count_desired); + _xfs_buf_free_pages(bp); } - pagebuf_deallocate(bp); + xfs_buf_deallocate(bp); } /* * Finds all pages for buffer in question and builds it's page list. */ STATIC int -_pagebuf_lookup_pages( +_xfs_buf_lookup_pages( xfs_buf_t *bp, uint flags) { - struct address_space *mapping = bp->pb_target->pbr_mapping; - size_t blocksize = bp->pb_target->pbr_bsize; - size_t size = bp->pb_count_desired; + struct address_space *mapping = bp->b_target->bt_mapping; + size_t blocksize = bp->b_target->bt_bsize; + size_t size = bp->b_count_desired; size_t nbytes, offset; - gfp_t gfp_mask = pb_to_gfp(flags); + gfp_t gfp_mask = xb_to_gfp(flags); unsigned short page_count, i; pgoff_t first; loff_t end; int error; - end = bp->pb_file_offset + bp->pb_buffer_length; - page_count = page_buf_btoc(end) - page_buf_btoct(bp->pb_file_offset); + end = bp->b_file_offset + bp->b_buffer_length; + page_count = xfs_buf_btoc(end) - xfs_buf_btoct(bp->b_file_offset); - error = _pagebuf_get_pages(bp, page_count, flags); + error = _xfs_buf_get_pages(bp, page_count, flags); if (unlikely(error)) return error; - bp->pb_flags |= _PBF_PAGE_CACHE; + bp->b_flags |= _XBF_PAGE_CACHE; - offset = bp->pb_offset; - first = bp->pb_file_offset >> PAGE_CACHE_SHIFT; + offset = bp->b_offset; + first = bp->b_file_offset >> PAGE_CACHE_SHIFT; - for (i = 0; i < bp->pb_page_count; i++) { + for (i = 0; i < bp->b_page_count; i++) { struct page *page; uint retries = 0; retry: page = find_or_create_page(mapping, first + i, gfp_mask); if (unlikely(page == NULL)) { - if (flags & PBF_READ_AHEAD) { - bp->pb_page_count = i; - for (i = 0; i < bp->pb_page_count; i++) - unlock_page(bp->pb_pages[i]); + if (flags & XBF_READ_AHEAD) { + bp->b_page_count = i; + for (i = 0; i < bp->b_page_count; i++) + unlock_page(bp->b_pages[i]); return -ENOMEM; } @@ -388,13 +388,13 @@ _pagebuf_lookup_pages( "deadlock in %s (mode:0x%x)\n", __FUNCTION__, gfp_mask); - XFS_STATS_INC(pb_page_retries); + XFS_STATS_INC(xb_page_retries); xfsbufd_wakeup(0, gfp_mask); blk_congestion_wait(WRITE, HZ/50); goto retry; } - XFS_STATS_INC(pb_page_found); + XFS_STATS_INC(xb_page_found); nbytes = min_t(size_t, size, PAGE_CACHE_SIZE - offset); size -= nbytes; @@ -402,27 +402,27 @@ _pagebuf_lookup_pages( if (!PageUptodate(page)) { page_count--; if (blocksize >= PAGE_CACHE_SIZE) { - if (flags & PBF_READ) - bp->pb_locked = 1; + if (flags & XBF_READ) + bp->b_locked = 1; } else if (!PagePrivate(page)) { if (test_page_region(page, offset, nbytes)) page_count++; } } - bp->pb_pages[i] = page; + bp->b_pages[i] = page; offset = 0; } - if (!bp->pb_locked) { - for (i = 0; i < bp->pb_page_count; i++) - unlock_page(bp->pb_pages[i]); + if (!bp->b_locked) { + for (i = 0; i < bp->b_page_count; i++) + unlock_page(bp->b_pages[i]); } - if (page_count == bp->pb_page_count) - bp->pb_flags |= PBF_DONE; + if (page_count == bp->b_page_count) + bp->b_flags |= XBF_DONE; - PB_TRACE(bp, "lookup_pages", (long)page_count); + XB_TRACE(bp, "lookup_pages", (long)page_count); return error; } @@ -430,23 +430,23 @@ _pagebuf_lookup_pages( * Map buffer into kernel address-space if nessecary. */ STATIC int -_pagebuf_map_pages( +_xfs_buf_map_pages( xfs_buf_t *bp, uint flags) { /* A single page buffer is always mappable */ - if (bp->pb_page_count == 1) { - bp->pb_addr = page_address(bp->pb_pages[0]) + bp->pb_offset; - bp->pb_flags |= PBF_MAPPED; - } else if (flags & PBF_MAPPED) { + if (bp->b_page_count == 1) { + bp->b_addr = page_address(bp->b_pages[0]) + bp->b_offset; + bp->b_flags |= XBF_MAPPED; + } else if (flags & XBF_MAPPED) { if (as_list_len > 64) purge_addresses(); - bp->pb_addr = vmap(bp->pb_pages, bp->pb_page_count, - VM_MAP, PAGE_KERNEL); - if (unlikely(bp->pb_addr == NULL)) + bp->b_addr = vmap(bp->b_pages, bp->b_page_count, + VM_MAP, PAGE_KERNEL); + if (unlikely(bp->b_addr == NULL)) return -ENOMEM; - bp->pb_addr += bp->pb_offset; - bp->pb_flags |= PBF_MAPPED; + bp->b_addr += bp->b_offset; + bp->b_flags |= XBF_MAPPED; } return 0; @@ -457,9 +457,7 @@ _pagebuf_map_pages( */ /* - * _pagebuf_find - * - * Looks up, and creates if absent, a lockable buffer for + * Look up, and creates if absent, a lockable buffer for * a given range of an inode. The buffer is returned * locked. If other overlapping buffers exist, they are * released before the new buffer is created and locked, @@ -467,55 +465,55 @@ _pagebuf_map_pages( * are unlocked. No I/O is implied by this call. */ xfs_buf_t * -_pagebuf_find( +_xfs_buf_find( xfs_buftarg_t *btp, /* block device target */ loff_t ioff, /* starting offset of range */ size_t isize, /* length of range */ - page_buf_flags_t flags, /* PBF_TRYLOCK */ - xfs_buf_t *new_pb)/* newly allocated buffer */ + xfs_buf_flags_t flags, + xfs_buf_t *new_bp) { loff_t range_base; size_t range_length; xfs_bufhash_t *hash; - xfs_buf_t *pb, *n; + xfs_buf_t *bp, *n; range_base = (ioff << BBSHIFT); range_length = (isize << BBSHIFT); /* Check for IOs smaller than the sector size / not sector aligned */ - ASSERT(!(range_length < (1 << btp->pbr_sshift))); - ASSERT(!(range_base & (loff_t)btp->pbr_smask)); + ASSERT(!(range_length < (1 << btp->bt_sshift))); + ASSERT(!(range_base & (loff_t)btp->bt_smask)); hash = &btp->bt_hash[hash_long((unsigned long)ioff, btp->bt_hashshift)]; spin_lock(&hash->bh_lock); - list_for_each_entry_safe(pb, n, &hash->bh_list, pb_hash_list) { - ASSERT(btp == pb->pb_target); - if (pb->pb_file_offset == range_base && - pb->pb_buffer_length == range_length) { + list_for_each_entry_safe(bp, n, &hash->bh_list, b_hash_list) { + ASSERT(btp == bp->b_target); + if (bp->b_file_offset == range_base && + bp->b_buffer_length == range_length) { /* - * If we look at something bring it to the + * If we look at something, bring it to the * front of the list for next time. */ - atomic_inc(&pb->pb_hold); - list_move(&pb->pb_hash_list, &hash->bh_list); + atomic_inc(&bp->b_hold); + list_move(&bp->b_hash_list, &hash->bh_list); goto found; } } /* No match found */ - if (new_pb) { - _pagebuf_initialize(new_pb, btp, range_base, + if (new_bp) { + _xfs_buf_initialize(new_bp, btp, range_base, range_length, flags); - new_pb->pb_hash = hash; - list_add(&new_pb->pb_hash_list, &hash->bh_list); + new_bp->b_hash = hash; + list_add(&new_bp->b_hash_list, &hash->bh_list); } else { - XFS_STATS_INC(pb_miss_locked); + XFS_STATS_INC(xb_miss_locked); } spin_unlock(&hash->bh_lock); - return new_pb; + return new_bp; found: spin_unlock(&hash->bh_lock); @@ -524,74 +522,72 @@ found: * if this does not work then we need to drop the * spinlock and do a hard attempt on the semaphore. */ - if (down_trylock(&pb->pb_sema)) { - if (!(flags & PBF_TRYLOCK)) { + if (down_trylock(&bp->b_sema)) { + if (!(flags & XBF_TRYLOCK)) { /* wait for buffer ownership */ - PB_TRACE(pb, "get_lock", 0); - pagebuf_lock(pb); - XFS_STATS_INC(pb_get_locked_waited); + XB_TRACE(bp, "get_lock", 0); + xfs_buf_lock(bp); + XFS_STATS_INC(xb_get_locked_waited); } else { /* We asked for a trylock and failed, no need * to look at file offset and length here, we - * know that this pagebuf at least overlaps our - * pagebuf and is locked, therefore our buffer - * either does not exist, or is this buffer + * know that this buffer at least overlaps our + * buffer and is locked, therefore our buffer + * either does not exist, or is this buffer. */ - - pagebuf_rele(pb); - XFS_STATS_INC(pb_busy_locked); - return (NULL); + xfs_buf_rele(bp); + XFS_STATS_INC(xb_busy_locked); + return NULL; } } else { /* trylock worked */ - PB_SET_OWNER(pb); + XB_SET_OWNER(bp); } - if (pb->pb_flags & PBF_STALE) { - ASSERT((pb->pb_flags & _PBF_DELWRI_Q) == 0); - pb->pb_flags &= PBF_MAPPED; + if (bp->b_flags & XBF_STALE) { + ASSERT((bp->b_flags & _XBF_DELWRI_Q) == 0); + bp->b_flags &= XBF_MAPPED; } - PB_TRACE(pb, "got_lock", 0); - XFS_STATS_INC(pb_get_locked); - return (pb); + XB_TRACE(bp, "got_lock", 0); + XFS_STATS_INC(xb_get_locked); + return bp; } /* - * xfs_buf_get_flags assembles a buffer covering the specified range. - * + * Assembles a buffer covering the specified range. * Storage in memory for all portions of the buffer will be allocated, * although backing storage may not be. */ xfs_buf_t * -xfs_buf_get_flags( /* allocate a buffer */ +xfs_buf_get_flags( xfs_buftarg_t *target,/* target for buffer */ loff_t ioff, /* starting offset of range */ size_t isize, /* length of range */ - page_buf_flags_t flags) /* PBF_TRYLOCK */ + xfs_buf_flags_t flags) { - xfs_buf_t *pb, *new_pb; + xfs_buf_t *bp, *new_bp; int error = 0, i; - new_pb = pagebuf_allocate(flags); - if (unlikely(!new_pb)) + new_bp = xfs_buf_allocate(flags); + if (unlikely(!new_bp)) return NULL; - pb = _pagebuf_find(target, ioff, isize, flags, new_pb); - if (pb == new_pb) { - error = _pagebuf_lookup_pages(pb, flags); + bp = _xfs_buf_find(target, ioff, isize, flags, new_bp); + if (bp == new_bp) { + error = _xfs_buf_lookup_pages(bp, flags); if (error) goto no_buffer; } else { - pagebuf_deallocate(new_pb); - if (unlikely(pb == NULL)) + xfs_buf_deallocate(new_bp); + if (unlikely(bp == NULL)) return NULL; } - for (i = 0; i < pb->pb_page_count; i++) - mark_page_accessed(pb->pb_pages[i]); + for (i = 0; i < bp->b_page_count; i++) + mark_page_accessed(bp->b_pages[i]); - if (!(pb->pb_flags & PBF_MAPPED)) { - error = _pagebuf_map_pages(pb, flags); + if (!(bp->b_flags & XBF_MAPPED)) { + error = _xfs_buf_map_pages(bp, flags); if (unlikely(error)) { printk(KERN_WARNING "%s: failed to map pages\n", __FUNCTION__); @@ -599,22 +595,22 @@ xfs_buf_get_flags( /* allocate a buffer */ } } - XFS_STATS_INC(pb_get); + XFS_STATS_INC(xb_get); /* * Always fill in the block number now, the mapped cases can do * their own overlay of this later. */ - pb->pb_bn = ioff; - pb->pb_count_desired = pb->pb_buffer_length; + bp->b_bn = ioff; + bp->b_count_desired = bp->b_buffer_length; - PB_TRACE(pb, "get", (unsigned long)flags); - return pb; + XB_TRACE(bp, "get", (unsigned long)flags); + return bp; no_buffer: - if (flags & (PBF_LOCK | PBF_TRYLOCK)) - pagebuf_unlock(pb); - pagebuf_rele(pb); + if (flags & (XBF_LOCK | XBF_TRYLOCK)) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); return NULL; } @@ -623,73 +619,73 @@ xfs_buf_read_flags( xfs_buftarg_t *target, loff_t ioff, size_t isize, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { - xfs_buf_t *pb; - - flags |= PBF_READ; - - pb = xfs_buf_get_flags(target, ioff, isize, flags); - if (pb) { - if (!XFS_BUF_ISDONE(pb)) { - PB_TRACE(pb, "read", (unsigned long)flags); - XFS_STATS_INC(pb_get_read); - pagebuf_iostart(pb, flags); - } else if (flags & PBF_ASYNC) { - PB_TRACE(pb, "read_async", (unsigned long)flags); + xfs_buf_t *bp; + + flags |= XBF_READ; + + bp = xfs_buf_get_flags(target, ioff, isize, flags); + if (bp) { + if (!XFS_BUF_ISDONE(bp)) { + XB_TRACE(bp, "read", (unsigned long)flags); + XFS_STATS_INC(xb_get_read); + xfs_buf_iostart(bp, flags); + } else if (flags & XBF_ASYNC) { + XB_TRACE(bp, "read_async", (unsigned long)flags); /* * Read ahead call which is already satisfied, * drop the buffer */ goto no_buffer; } else { - PB_TRACE(pb, "read_done", (unsigned long)flags); + XB_TRACE(bp, "read_done", (unsigned long)flags); /* We do not want read in the flags */ - pb->pb_flags &= ~PBF_READ; + bp->b_flags &= ~XBF_READ; } } - return pb; + return bp; no_buffer: - if (flags & (PBF_LOCK | PBF_TRYLOCK)) - pagebuf_unlock(pb); - pagebuf_rele(pb); + if (flags & (XBF_LOCK | XBF_TRYLOCK)) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); return NULL; } /* - * If we are not low on memory then do the readahead in a deadlock - * safe manner. + * If we are not low on memory then do the readahead in a deadlock + * safe manner. */ void -pagebuf_readahead( +xfs_buf_readahead( xfs_buftarg_t *target, loff_t ioff, size_t isize, - page_buf_flags_t flags) + xfs_buf_flags_t flags) { struct backing_dev_info *bdi; - bdi = target->pbr_mapping->backing_dev_info; + bdi = target->bt_mapping->backing_dev_info; if (bdi_read_congested(bdi)) return; - flags |= (PBF_TRYLOCK|PBF_ASYNC|PBF_READ_AHEAD); + flags |= (XBF_TRYLOCK|XBF_ASYNC|XBF_READ_AHEAD); xfs_buf_read_flags(target, ioff, isize, flags); } xfs_buf_t * -pagebuf_get_empty( +xfs_buf_get_empty( size_t len, xfs_buftarg_t *target) { - xfs_buf_t *pb; + xfs_buf_t *bp; - pb = pagebuf_allocate(0); - if (pb) - _pagebuf_initialize(pb, target, 0, len, 0); - return pb; + bp = xfs_buf_allocate(0); + if (bp) + _xfs_buf_initialize(bp, target, 0, len, 0); + return bp; } static inline struct page * @@ -705,8 +701,8 @@ mem_to_page( } int -pagebuf_associate_memory( - xfs_buf_t *pb, +xfs_buf_associate_memory( + xfs_buf_t *bp, void *mem, size_t len) { @@ -723,40 +719,40 @@ pagebuf_associate_memory( page_count++; /* Free any previous set of page pointers */ - if (pb->pb_pages) - _pagebuf_free_pages(pb); + if (bp->b_pages) + _xfs_buf_free_pages(bp); - pb->pb_pages = NULL; - pb->pb_addr = mem; + bp->b_pages = NULL; + bp->b_addr = mem; - rval = _pagebuf_get_pages(pb, page_count, 0); + rval = _xfs_buf_get_pages(bp, page_count, 0); if (rval) return rval; - pb->pb_offset = offset; + bp->b_offset = offset; ptr = (size_t) mem & PAGE_CACHE_MASK; end = PAGE_CACHE_ALIGN((size_t) mem + len); end_cur = end; /* set up first page */ - pb->pb_pages[0] = mem_to_page(mem); + bp->b_pages[0] = mem_to_page(mem); ptr += PAGE_CACHE_SIZE; - pb->pb_page_count = ++i; + bp->b_page_count = ++i; while (ptr < end) { - pb->pb_pages[i] = mem_to_page((void *)ptr); - pb->pb_page_count = ++i; + bp->b_pages[i] = mem_to_page((void *)ptr); + bp->b_page_count = ++i; ptr += PAGE_CACHE_SIZE; } - pb->pb_locked = 0; + bp->b_locked = 0; - pb->pb_count_desired = pb->pb_buffer_length = len; - pb->pb_flags |= PBF_MAPPED; + bp->b_count_desired = bp->b_buffer_length = len; + bp->b_flags |= XBF_MAPPED; return 0; } xfs_buf_t * -pagebuf_get_no_daddr( +xfs_buf_get_noaddr( size_t len, xfs_buftarg_t *target) { @@ -765,10 +761,10 @@ pagebuf_get_no_daddr( void *data; int error; - bp = pagebuf_allocate(0); + bp = xfs_buf_allocate(0); if (unlikely(bp == NULL)) goto fail; - _pagebuf_initialize(bp, target, 0, len, 0); + _xfs_buf_initialize(bp, target, 0, len, 0); try_again: data = kmem_alloc(malloc_len, KM_SLEEP | KM_MAYFAIL); @@ -777,78 +773,73 @@ pagebuf_get_no_daddr( /* check whether alignment matches.. */ if ((__psunsigned_t)data != - ((__psunsigned_t)data & ~target->pbr_smask)) { + ((__psunsigned_t)data & ~target->bt_smask)) { /* .. else double the size and try again */ kmem_free(data, malloc_len); malloc_len <<= 1; goto try_again; } - error = pagebuf_associate_memory(bp, data, len); + error = xfs_buf_associate_memory(bp, data, len); if (error) goto fail_free_mem; - bp->pb_flags |= _PBF_KMEM_ALLOC; + bp->b_flags |= _XBF_KMEM_ALLOC; - pagebuf_unlock(bp); + xfs_buf_unlock(bp); - PB_TRACE(bp, "no_daddr", data); + XB_TRACE(bp, "no_daddr", data); return bp; fail_free_mem: kmem_free(data, malloc_len); fail_free_buf: - pagebuf_free(bp); + xfs_buf_free(bp); fail: return NULL; } /* - * pagebuf_hold - * * Increment reference count on buffer, to hold the buffer concurrently * with another thread which may release (free) the buffer asynchronously. - * * Must hold the buffer already to call this function. */ void -pagebuf_hold( - xfs_buf_t *pb) +xfs_buf_hold( + xfs_buf_t *bp) { - atomic_inc(&pb->pb_hold); - PB_TRACE(pb, "hold", 0); + atomic_inc(&bp->b_hold); + XB_TRACE(bp, "hold", 0); } /* - * pagebuf_rele - * - * pagebuf_rele releases a hold on the specified buffer. If the - * the hold count is 1, pagebuf_rele calls pagebuf_free. + * Releases a hold on the specified buffer. If the + * the hold count is 1, calls xfs_buf_free. */ void -pagebuf_rele( - xfs_buf_t *pb) +xfs_buf_rele( + xfs_buf_t *bp) { - xfs_bufhash_t *hash = pb->pb_hash; + xfs_bufhash_t *hash = bp->b_hash; - PB_TRACE(pb, "rele", pb->pb_relse); + XB_TRACE(bp, "rele", bp->b_relse); - if (atomic_dec_and_lock(&pb->pb_hold, &hash->bh_lock)) { - if (pb->pb_relse) { - atomic_inc(&pb->pb_hold); + if (atomic_dec_and_lock(&bp->b_hold, &hash->bh_lock)) { + if (bp->b_relse) { + atomic_inc(&bp->b_hold); spin_unlock(&hash->bh_lock); - (*(pb->pb_relse)) (pb); - } else if (pb->pb_flags & PBF_FS_MANAGED) { + (*(bp->b_relse)) (bp); + } else if (bp->b_flags & XBF_FS_MANAGED) { spin_unlock(&hash->bh_lock); } else { - ASSERT(!(pb->pb_flags & (PBF_DELWRI|_PBF_DELWRI_Q))); - list_del_init(&pb->pb_hash_list); + ASSERT(!(bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q))); + list_del_init(&bp->b_hash_list); spin_unlock(&hash->bh_lock); - pagebuf_free(pb); + xfs_buf_free(bp); } } else { /* * Catch reference count leaks */ - ASSERT(atomic_read(&pb->pb_hold) >= 0); + ASSERT(atomic_read(&bp->b_hold) >= 0); } } @@ -864,168 +855,122 @@ pagebuf_rele( */ /* - * pagebuf_cond_lock - * - * pagebuf_cond_lock locks a buffer object, if it is not already locked. - * Note that this in no way - * locks the underlying pages, so it is only useful for synchronizing - * concurrent use of page buffer objects, not for synchronizing independent - * access to the underlying pages. + * Locks a buffer object, if it is not already locked. + * Note that this in no way locks the underlying pages, so it is only + * useful for synchronizing concurrent use of buffer objects, not for + * synchronizing independent access to the underlying pages. */ int -pagebuf_cond_lock( /* lock buffer, if not locked */ - /* returns -EBUSY if locked) */ - xfs_buf_t *pb) +xfs_buf_cond_lock( + xfs_buf_t *bp) { int locked; - locked = down_trylock(&pb->pb_sema) == 0; + locked = down_trylock(&bp->b_sema) == 0; if (locked) { - PB_SET_OWNER(pb); + XB_SET_OWNER(bp); } - PB_TRACE(pb, "cond_lock", (long)locked); - return(locked ? 0 : -EBUSY); + XB_TRACE(bp, "cond_lock", (long)locked); + return locked ? 0 : -EBUSY; } #if defined(DEBUG) || defined(XFS_BLI_TRACE) -/* - * pagebuf_lock_value - * - * Return lock value for a pagebuf - */ int -pagebuf_lock_value( - xfs_buf_t *pb) +xfs_buf_lock_value( + xfs_buf_t *bp) { - return(atomic_read(&pb->pb_sema.count)); + return atomic_read(&bp->b_sema.count); } #endif /* - * pagebuf_lock - * - * pagebuf_lock locks a buffer object. Note that this in no way - * locks the underlying pages, so it is only useful for synchronizing - * concurrent use of page buffer objects, not for synchronizing independent - * access to the underlying pages. + * Locks a buffer object. + * Note that this in no way locks the underlying pages, so it is only + * useful for synchronizing concurrent use of buffer objects, not for + * synchronizing independent access to the underlying pages. */ -int -pagebuf_lock( - xfs_buf_t *pb) +void +xfs_buf_lock( + xfs_buf_t *bp) { - PB_TRACE(pb, "lock", 0); - if (atomic_read(&pb->pb_io_remaining)) - blk_run_address_space(pb->pb_target->pbr_mapping); - down(&pb->pb_sema); - PB_SET_OWNER(pb); - PB_TRACE(pb, "locked", 0); - return 0; + XB_TRACE(bp, "lock", 0); + if (atomic_read(&bp->b_io_remaining)) + blk_run_address_space(bp->b_target->bt_mapping); + down(&bp->b_sema); + XB_SET_OWNER(bp); + XB_TRACE(bp, "locked", 0); } /* - * pagebuf_unlock - * - * pagebuf_unlock releases the lock on the buffer object created by - * pagebuf_lock or pagebuf_cond_lock (not any pinning of underlying pages - * created by pagebuf_pin). - * + * Releases the lock on the buffer object. * If the buffer is marked delwri but is not queued, do so before we - * unlock the buffer as we need to set flags correctly. We also need to + * unlock the buffer as we need to set flags correctly. We also need to * take a reference for the delwri queue because the unlocker is going to * drop their's and they don't know we just queued it. */ void -pagebuf_unlock( /* unlock buffer */ - xfs_buf_t *pb) /* buffer to unlock */ +xfs_buf_unlock( + xfs_buf_t *bp) { - if ((pb->pb_flags & (PBF_DELWRI|_PBF_DELWRI_Q)) == PBF_DELWRI) { - atomic_inc(&pb->pb_hold); - pb->pb_flags |= PBF_ASYNC; - pagebuf_delwri_queue(pb, 0); + if ((bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q)) == XBF_DELWRI) { + atomic_inc(&bp->b_hold); + bp->b_flags |= XBF_ASYNC; + xfs_buf_delwri_queue(bp, 0); } - PB_CLEAR_OWNER(pb); - up(&pb->pb_sema); - PB_TRACE(pb, "unlock", 0); + XB_CLEAR_OWNER(bp); + up(&bp->b_sema); + XB_TRACE(bp, "unlock", 0); } /* * Pinning Buffer Storage in Memory - */ - -/* - * pagebuf_pin - * - * pagebuf_pin locks all of the memory represented by a buffer in - * memory. Multiple calls to pagebuf_pin and pagebuf_unpin, for - * the same or different buffers affecting a given page, will - * properly count the number of outstanding "pin" requests. The - * buffer may be released after the pagebuf_pin and a different - * buffer used when calling pagebuf_unpin, if desired. - * pagebuf_pin should be used by the file system when it wants be - * assured that no attempt will be made to force the affected - * memory to disk. It does not assure that a given logical page - * will not be moved to a different physical page. + * Ensure that no attempt to force a buffer to disk will succeed. */ void -pagebuf_pin( - xfs_buf_t *pb) +xfs_buf_pin( + xfs_buf_t *bp) { - atomic_inc(&pb->pb_pin_count); - PB_TRACE(pb, "pin", (long)pb->pb_pin_count.counter); + atomic_inc(&bp->b_pin_count); + XB_TRACE(bp, "pin", (long)bp->b_pin_count.counter); } -/* - * pagebuf_unpin - * - * pagebuf_unpin reverses the locking of memory performed by - * pagebuf_pin. Note that both functions affected the logical - * pages associated with the buffer, not the buffer itself. - */ void -pagebuf_unpin( - xfs_buf_t *pb) +xfs_buf_unpin( + xfs_buf_t *bp) { - if (atomic_dec_and_test(&pb->pb_pin_count)) { - wake_up_all(&pb->pb_waiters); - } - PB_TRACE(pb, "unpin", (long)pb->pb_pin_count.counter); + if (atomic_dec_and_test(&bp->b_pin_count)) + wake_up_all(&bp->b_waiters); + XB_TRACE(bp, "unpin", (long)bp->b_pin_count.counter); } int -pagebuf_ispin( - xfs_buf_t *pb) +xfs_buf_ispin( + xfs_buf_t *bp) { - return atomic_read(&pb->pb_pin_count); + return atomic_read(&bp->b_pin_count); } -/* - * pagebuf_wait_unpin - * - * pagebuf_wait_unpin waits until all of the memory associated - * with the buffer is not longer locked in memory. It returns - * immediately if none of the affected pages are locked. - */ -static inline void -_pagebuf_wait_unpin( - xfs_buf_t *pb) +STATIC void +xfs_buf_wait_unpin( + xfs_buf_t *bp) { DECLARE_WAITQUEUE (wait, current); - if (atomic_read(&pb->pb_pin_count) == 0) + if (atomic_read(&bp->b_pin_count) == 0) return; - add_wait_queue(&pb->pb_waiters, &wait); + add_wait_queue(&bp->b_waiters, &wait); for (;;) { set_current_state(TASK_UNINTERRUPTIBLE); - if (atomic_read(&pb->pb_pin_count) == 0) + if (atomic_read(&bp->b_pin_count) == 0) break; - if (atomic_read(&pb->pb_io_remaining)) - blk_run_address_space(pb->pb_target->pbr_mapping); + if (atomic_read(&bp->b_io_remaining)) + blk_run_address_space(bp->b_target->bt_mapping); schedule(); } - remove_wait_queue(&pb->pb_waiters, &wait); + remove_wait_queue(&bp->b_waiters, &wait); set_current_state(TASK_RUNNING); } @@ -1033,241 +978,216 @@ _pagebuf_wait_unpin( * Buffer Utility Routines */ -/* - * pagebuf_iodone - * - * pagebuf_iodone marks a buffer for which I/O is in progress - * done with respect to that I/O. The pb_iodone routine, if - * present, will be called as a side-effect. - */ STATIC void -pagebuf_iodone_work( +xfs_buf_iodone_work( void *v) { xfs_buf_t *bp = (xfs_buf_t *)v; - if (bp->pb_iodone) - (*(bp->pb_iodone))(bp); - else if (bp->pb_flags & PBF_ASYNC) + if (bp->b_iodone) + (*(bp->b_iodone))(bp); + else if (bp->b_flags & XBF_ASYNC) xfs_buf_relse(bp); } void -pagebuf_iodone( - xfs_buf_t *pb, +xfs_buf_ioend( + xfs_buf_t *bp, int schedule) { - pb->pb_flags &= ~(PBF_READ | PBF_WRITE); - if (pb->pb_error == 0) - pb->pb_flags |= PBF_DONE; + bp->b_flags &= ~(XBF_READ | XBF_WRITE); + if (bp->b_error == 0) + bp->b_flags |= XBF_DONE; - PB_TRACE(pb, "iodone", pb->pb_iodone); + XB_TRACE(bp, "iodone", bp->b_iodone); - if ((pb->pb_iodone) || (pb->pb_flags & PBF_ASYNC)) { + if ((bp->b_iodone) || (bp->b_flags & XBF_ASYNC)) { if (schedule) { - INIT_WORK(&pb->pb_iodone_work, pagebuf_iodone_work, pb); - queue_work(xfslogd_workqueue, &pb->pb_iodone_work); + INIT_WORK(&bp->b_iodone_work, xfs_buf_iodone_work, bp); + queue_work(xfslogd_workqueue, &bp->b_iodone_work); } else { - pagebuf_iodone_work(pb); + xfs_buf_iodone_work(bp); } } else { - up(&pb->pb_iodonesema); + up(&bp->b_iodonesema); } } -/* - * pagebuf_ioerror - * - * pagebuf_ioerror sets the error code for a buffer. - */ void -pagebuf_ioerror( /* mark/clear buffer error flag */ - xfs_buf_t *pb, /* buffer to mark */ - int error) /* error to store (0 if none) */ +xfs_buf_ioerror( + xfs_buf_t *bp, + int error) { ASSERT(error >= 0 && error <= 0xffff); - pb->pb_error = (unsigned short)error; - PB_TRACE(pb, "ioerror", (unsigned long)error); + bp->b_error = (unsigned short)error; + XB_TRACE(bp, "ioerror", (unsigned long)error); } /* - * pagebuf_iostart - * - * pagebuf_iostart initiates I/O on a buffer, based on the flags supplied. - * If necessary, it will arrange for any disk space allocation required, - * and it will break up the request if the block mappings require it. - * The pb_iodone routine in the buffer supplied will only be called + * Initiate I/O on a buffer, based on the flags supplied. + * The b_iodone routine in the buffer supplied will only be called * when all of the subsidiary I/O requests, if any, have been completed. - * pagebuf_iostart calls the pagebuf_ioinitiate routine or - * pagebuf_iorequest, if the former routine is not defined, to start - * the I/O on a given low-level request. */ int -pagebuf_iostart( /* start I/O on a buffer */ - xfs_buf_t *pb, /* buffer to start */ - page_buf_flags_t flags) /* PBF_LOCK, PBF_ASYNC, PBF_READ, */ - /* PBF_WRITE, PBF_DELWRI, */ - /* PBF_DONT_BLOCK */ +xfs_buf_iostart( + xfs_buf_t *bp, + xfs_buf_flags_t flags) { int status = 0; - PB_TRACE(pb, "iostart", (unsigned long)flags); + XB_TRACE(bp, "iostart", (unsigned long)flags); - if (flags & PBF_DELWRI) { - pb->pb_flags &= ~(PBF_READ | PBF_WRITE | PBF_ASYNC); - pb->pb_flags |= flags & (PBF_DELWRI | PBF_ASYNC); - pagebuf_delwri_queue(pb, 1); + if (flags & XBF_DELWRI) { + bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_ASYNC); + bp->b_flags |= flags & (XBF_DELWRI | XBF_ASYNC); + xfs_buf_delwri_queue(bp, 1); return status; } - pb->pb_flags &= ~(PBF_READ | PBF_WRITE | PBF_ASYNC | PBF_DELWRI | \ - PBF_READ_AHEAD | _PBF_RUN_QUEUES); - pb->pb_flags |= flags & (PBF_READ | PBF_WRITE | PBF_ASYNC | \ - PBF_READ_AHEAD | _PBF_RUN_QUEUES); + bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_ASYNC | XBF_DELWRI | \ + XBF_READ_AHEAD | _XBF_RUN_QUEUES); + bp->b_flags |= flags & (XBF_READ | XBF_WRITE | XBF_ASYNC | \ + XBF_READ_AHEAD | _XBF_RUN_QUEUES); - BUG_ON(pb->pb_bn == XFS_BUF_DADDR_NULL); + BUG_ON(bp->b_bn == XFS_BUF_DADDR_NULL); /* For writes allow an alternate strategy routine to precede * the actual I/O request (which may not be issued at all in * a shutdown situation, for example). */ - status = (flags & PBF_WRITE) ? - pagebuf_iostrategy(pb) : pagebuf_iorequest(pb); + status = (flags & XBF_WRITE) ? + xfs_buf_iostrategy(bp) : xfs_buf_iorequest(bp); /* Wait for I/O if we are not an async request. * Note: async I/O request completion will release the buffer, * and that can already be done by this point. So using the * buffer pointer from here on, after async I/O, is invalid. */ - if (!status && !(flags & PBF_ASYNC)) - status = pagebuf_iowait(pb); + if (!status && !(flags & XBF_ASYNC)) + status = xfs_buf_iowait(bp); return status; } -/* - * Helper routine for pagebuf_iorequest - */ - STATIC __inline__ int -_pagebuf_iolocked( - xfs_buf_t *pb) +_xfs_buf_iolocked( + xfs_buf_t *bp) { - ASSERT(pb->pb_flags & (PBF_READ|PBF_WRITE)); - if (pb->pb_flags & PBF_READ) - return pb->pb_locked; + ASSERT(bp->b_flags & (XBF_READ | XBF_WRITE)); + if (bp->b_flags & XBF_READ) + return bp->b_locked; return 0; } STATIC __inline__ void -_pagebuf_iodone( - xfs_buf_t *pb, +_xfs_buf_ioend( + xfs_buf_t *bp, int schedule) { - if (atomic_dec_and_test(&pb->pb_io_remaining) == 1) { - pb->pb_locked = 0; - pagebuf_iodone(pb, schedule); + if (atomic_dec_and_test(&bp->b_io_remaining) == 1) { + bp->b_locked = 0; + xfs_buf_ioend(bp, schedule); } } STATIC int -bio_end_io_pagebuf( +xfs_buf_bio_end_io( struct bio *bio, unsigned int bytes_done, int error) { - xfs_buf_t *pb = (xfs_buf_t *)bio->bi_private; - unsigned int blocksize = pb->pb_target->pbr_bsize; + xfs_buf_t *bp = (xfs_buf_t *)bio->bi_private; + unsigned int blocksize = bp->b_target->bt_bsize; struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; if (bio->bi_size) return 1; if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) - pb->pb_error = EIO; + bp->b_error = EIO; do { struct page *page = bvec->bv_page; - if (unlikely(pb->pb_error)) { - if (pb->pb_flags & PBF_READ) + if (unlikely(bp->b_error)) { + if (bp->b_flags & XBF_READ) ClearPageUptodate(page); SetPageError(page); - } else if (blocksize == PAGE_CACHE_SIZE) { + } else if (blocksize >= PAGE_CACHE_SIZE) { SetPageUptodate(page); } else if (!PagePrivate(page) && - (pb->pb_flags & _PBF_PAGE_CACHE)) { + (bp->b_flags & _XBF_PAGE_CACHE)) { set_page_region(page, bvec->bv_offset, bvec->bv_len); } if (--bvec >= bio->bi_io_vec) prefetchw(&bvec->bv_page->flags); - if (_pagebuf_iolocked(pb)) { + if (_xfs_buf_iolocked(bp)) { unlock_page(page); } } while (bvec >= bio->bi_io_vec); - _pagebuf_iodone(pb, 1); + _xfs_buf_ioend(bp, 1); bio_put(bio); return 0; } STATIC void -_pagebuf_ioapply( - xfs_buf_t *pb) +_xfs_buf_ioapply( + xfs_buf_t *bp) { int i, rw, map_i, total_nr_pages, nr_pages; struct bio *bio; - int offset = pb->pb_offset; - int size = pb->pb_count_desired; - sector_t sector = pb->pb_bn; - unsigned int blocksize = pb->pb_target->pbr_bsize; - int locking = _pagebuf_iolocked(pb); + int offset = bp->b_offset; + int size = bp->b_count_desired; + sector_t sector = bp->b_bn; + unsigned int blocksize = bp->b_target->bt_bsize; + int locking = _xfs_buf_iolocked(bp); - total_nr_pages = pb->pb_page_count; + total_nr_pages = bp->b_page_count; map_i = 0; - if (pb->pb_flags & _PBF_RUN_QUEUES) { - pb->pb_flags &= ~_PBF_RUN_QUEUES; - rw = (pb->pb_flags & PBF_READ) ? READ_SYNC : WRITE_SYNC; + if (bp->b_flags & _XBF_RUN_QUEUES) { + bp->b_flags &= ~_XBF_RUN_QUEUES; + rw = (bp->b_flags & XBF_READ) ? READ_SYNC : WRITE_SYNC; } else { - rw = (pb->pb_flags & PBF_READ) ? READ : WRITE; + rw = (bp->b_flags & XBF_READ) ? READ : WRITE; } - if (pb->pb_flags & PBF_ORDERED) { - ASSERT(!(pb->pb_flags & PBF_READ)); + if (bp->b_flags & XBF_ORDERED) { + ASSERT(!(bp->b_flags & XBF_READ)); rw = WRITE_BARRIER; } - /* Special code path for reading a sub page size pagebuf in -- + /* Special code path for reading a sub page size buffer in -- * we populate up the whole page, and hence the other metadata * in the same page. This optimization is only valid when the - * filesystem block size and the page size are equal. + * filesystem block size is not smaller than the page size. */ - if ((pb->pb_buffer_length < PAGE_CACHE_SIZE) && - (pb->pb_flags & PBF_READ) && locking && - (blocksize == PAGE_CACHE_SIZE)) { + if ((bp->b_buffer_length < PAGE_CACHE_SIZE) && + (bp->b_flags & XBF_READ) && locking && + (blocksize >= PAGE_CACHE_SIZE)) { bio = bio_alloc(GFP_NOIO, 1); - bio->bi_bdev = pb->pb_target->pbr_bdev; + bio->bi_bdev = bp->b_target->bt_bdev; bio->bi_sector = sector - (offset >> BBSHIFT); - bio->bi_end_io = bio_end_io_pagebuf; - bio->bi_private = pb; + bio->bi_end_io = xfs_buf_bio_end_io; + bio->bi_private = bp; - bio_add_page(bio, pb->pb_pages[0], PAGE_CACHE_SIZE, 0); + bio_add_page(bio, bp->b_pages[0], PAGE_CACHE_SIZE, 0); size = 0; - atomic_inc(&pb->pb_io_remaining); + atomic_inc(&bp->b_io_remaining); goto submit_io; } /* Lock down the pages which we need to for the request */ - if (locking && (pb->pb_flags & PBF_WRITE) && (pb->pb_locked == 0)) { + if (locking && (bp->b_flags & XBF_WRITE) && (bp->b_locked == 0)) { for (i = 0; size; i++) { int nbytes = PAGE_CACHE_SIZE - offset; - struct page *page = pb->pb_pages[i]; + struct page *page = bp->b_pages[i]; if (nbytes > size) nbytes = size; @@ -1277,30 +1197,30 @@ _pagebuf_ioapply( size -= nbytes; offset = 0; } - offset = pb->pb_offset; - size = pb->pb_count_desired; + offset = bp->b_offset; + size = bp->b_count_desired; } next_chunk: - atomic_inc(&pb->pb_io_remaining); + atomic_inc(&bp->b_io_remaining); nr_pages = BIO_MAX_SECTORS >> (PAGE_SHIFT - BBSHIFT); if (nr_pages > total_nr_pages) nr_pages = total_nr_pages; bio = bio_alloc(GFP_NOIO, nr_pages); - bio->bi_bdev = pb->pb_target->pbr_bdev; + bio->bi_bdev = bp->b_target->bt_bdev; bio->bi_sector = sector; - bio->bi_end_io = bio_end_io_pagebuf; - bio->bi_private = pb; + bio->bi_end_io = xfs_buf_bio_end_io; + bio->bi_private = bp; for (; size && nr_pages; nr_pages--, map_i++) { - int nbytes = PAGE_CACHE_SIZE - offset; + int rbytes, nbytes = PAGE_CACHE_SIZE - offset; if (nbytes > size) nbytes = size; - if (bio_add_page(bio, pb->pb_pages[map_i], - nbytes, offset) < nbytes) + rbytes = bio_add_page(bio, bp->b_pages[map_i], nbytes, offset); + if (rbytes < nbytes) break; offset = 0; @@ -1316,107 +1236,102 @@ submit_io: goto next_chunk; } else { bio_put(bio); - pagebuf_ioerror(pb, EIO); + xfs_buf_ioerror(bp, EIO); } } -/* - * pagebuf_iorequest -- the core I/O request routine. - */ int -pagebuf_iorequest( /* start real I/O */ - xfs_buf_t *pb) /* buffer to convey to device */ +xfs_buf_iorequest( + xfs_buf_t *bp) { - PB_TRACE(pb, "iorequest", 0); + XB_TRACE(bp, "iorequest", 0); - if (pb->pb_flags & PBF_DELWRI) { - pagebuf_delwri_queue(pb, 1); + if (bp->b_flags & XBF_DELWRI) { + xfs_buf_delwri_queue(bp, 1); return 0; } - if (pb->pb_flags & PBF_WRITE) { - _pagebuf_wait_unpin(pb); + if (bp->b_flags & XBF_WRITE) { + xfs_buf_wait_unpin(bp); } - pagebuf_hold(pb); + xfs_buf_hold(bp); /* Set the count to 1 initially, this will stop an I/O * completion callout which happens before we have started - * all the I/O from calling pagebuf_iodone too early. + * all the I/O from calling xfs_buf_ioend too early. */ - atomic_set(&pb->pb_io_remaining, 1); - _pagebuf_ioapply(pb); - _pagebuf_iodone(pb, 0); + atomic_set(&bp->b_io_remaining, 1); + _xfs_buf_ioapply(bp); + _xfs_buf_ioend(bp, 0); - pagebuf_rele(pb); + xfs_buf_rele(bp); return 0; } /* - * pagebuf_iowait - * - * pagebuf_iowait waits for I/O to complete on the buffer supplied. - * It returns immediately if no I/O is pending. In any case, it returns - * the error code, if any, or 0 if there is no error. + * Waits for I/O to complete on the buffer supplied. + * It returns immediately if no I/O is pending. + * It returns the I/O error code, if any, or 0 if there was no error. */ int -pagebuf_iowait( - xfs_buf_t *pb) +xfs_buf_iowait( + xfs_buf_t *bp) { - PB_TRACE(pb, "iowait", 0); - if (atomic_read(&pb->pb_io_remaining)) - blk_run_address_space(pb->pb_target->pbr_mapping); - down(&pb->pb_iodonesema); - PB_TRACE(pb, "iowaited", (long)pb->pb_error); - return pb->pb_error; + XB_TRACE(bp, "iowait", 0); + if (atomic_read(&bp->b_io_remaining)) + blk_run_address_space(bp->b_target->bt_mapping); + down(&bp->b_iodonesema); + XB_TRACE(bp, "iowaited", (long)bp->b_error); + return bp->b_error; } -caddr_t -pagebuf_offset( - xfs_buf_t *pb, +xfs_caddr_t +xfs_buf_offset( + xfs_buf_t *bp, size_t offset) { struct page *page; - offset += pb->pb_offset; + if (bp->b_flags & XBF_MAPPED) + return XFS_BUF_PTR(bp) + offset; - page = pb->pb_pages[offset >> PAGE_CACHE_SHIFT]; - return (caddr_t) page_address(page) + (offset & (PAGE_CACHE_SIZE - 1)); + offset += bp->b_offset; + page = bp->b_pages[offset >> PAGE_CACHE_SHIFT]; + return (xfs_caddr_t)page_address(page) + (offset & (PAGE_CACHE_SIZE-1)); } /* - * pagebuf_iomove - * * Move data into or out of a buffer. */ void -pagebuf_iomove( - xfs_buf_t *pb, /* buffer to process */ +xfs_buf_iomove( + xfs_buf_t *bp, /* buffer to process */ size_t boff, /* starting buffer offset */ size_t bsize, /* length to copy */ caddr_t data, /* data address */ - page_buf_rw_t mode) /* read/write flag */ + xfs_buf_rw_t mode) /* read/write/zero flag */ { size_t bend, cpoff, csize; struct page *page; bend = boff + bsize; while (boff < bend) { - page = pb->pb_pages[page_buf_btoct(boff + pb->pb_offset)]; - cpoff = page_buf_poff(boff + pb->pb_offset); + page = bp->b_pages[xfs_buf_btoct(boff + bp->b_offset)]; + cpoff = xfs_buf_poff(boff + bp->b_offset); csize = min_t(size_t, - PAGE_CACHE_SIZE-cpoff, pb->pb_count_desired-boff); + PAGE_CACHE_SIZE-cpoff, bp->b_count_desired-boff); ASSERT(((csize + cpoff) <= PAGE_CACHE_SIZE)); switch (mode) { - case PBRW_ZERO: + case XBRW_ZERO: memset(page_address(page) + cpoff, 0, csize); break; - case PBRW_READ: + case XBRW_READ: memcpy(data, page_address(page) + cpoff, csize); break; - case PBRW_WRITE: + case XBRW_WRITE: memcpy(page_address(page) + cpoff, data, csize); } @@ -1426,12 +1341,12 @@ pagebuf_iomove( } /* - * Handling of buftargs. + * Handling of buffer targets (buftargs). */ /* - * Wait for any bufs with callbacks that have been submitted but - * have not yet returned... walk the hash list for the target. + * Wait for any bufs with callbacks that have been submitted but + * have not yet returned... walk the hash list for the target. */ void xfs_wait_buftarg( @@ -1445,15 +1360,15 @@ xfs_wait_buftarg( hash = &btp->bt_hash[i]; again: spin_lock(&hash->bh_lock); - list_for_each_entry_safe(bp, n, &hash->bh_list, pb_hash_list) { - ASSERT(btp == bp->pb_target); - if (!(bp->pb_flags & PBF_FS_MANAGED)) { + list_for_each_entry_safe(bp, n, &hash->bh_list, b_hash_list) { + ASSERT(btp == bp->b_target); + if (!(bp->b_flags & XBF_FS_MANAGED)) { spin_unlock(&hash->bh_lock); /* * Catch superblock reference count leaks * immediately */ - BUG_ON(bp->pb_bn == 0); + BUG_ON(bp->b_bn == 0); delay(100); goto again; } @@ -1463,9 +1378,9 @@ again: } /* - * Allocate buffer hash table for a given target. - * For devices containing metadata (i.e. not the log/realtime devices) - * we need to allocate a much larger hash table. + * Allocate buffer hash table for a given target. + * For devices containing metadata (i.e. not the log/realtime devices) + * we need to allocate a much larger hash table. */ STATIC void xfs_alloc_bufhash( @@ -1488,13 +1403,12 @@ STATIC void xfs_free_bufhash( xfs_buftarg_t *btp) { - kmem_free(btp->bt_hash, - (1 << btp->bt_hashshift) * sizeof(xfs_bufhash_t)); + kmem_free(btp->bt_hash, (1<<btp->bt_hashshift) * sizeof(xfs_bufhash_t)); btp->bt_hash = NULL; } /* - * buftarg list for delwrite queue processing + * buftarg list for delwrite queue processing */ STATIC LIST_HEAD(xfs_buftarg_list); STATIC DEFINE_SPINLOCK(xfs_buftarg_lock); @@ -1524,12 +1438,13 @@ xfs_free_buftarg( { xfs_flush_buftarg(btp, 1); if (external) - xfs_blkdev_put(btp->pbr_bdev); + xfs_blkdev_put(btp->bt_bdev); xfs_free_bufhash(btp); - iput(btp->pbr_mapping->host); + iput(btp->bt_mapping->host); - /* unregister the buftarg first so that we don't get a - * wakeup finding a non-existent task */ + /* Unregister the buftarg first so that we don't get a + * wakeup finding a non-existent task + */ xfs_unregister_buftarg(btp); kthread_stop(btp->bt_task); @@ -1543,11 +1458,11 @@ xfs_setsize_buftarg_flags( unsigned int sectorsize, int verbose) { - btp->pbr_bsize = blocksize; - btp->pbr_sshift = ffs(sectorsize) - 1; - btp->pbr_smask = sectorsize - 1; + btp->bt_bsize = blocksize; + btp->bt_sshift = ffs(sectorsize) - 1; + btp->bt_smask = sectorsize - 1; - if (set_blocksize(btp->pbr_bdev, sectorsize)) { + if (set_blocksize(btp->bt_bdev, sectorsize)) { printk(KERN_WARNING "XFS: Cannot set_blocksize to %u on device %s\n", sectorsize, XFS_BUFTARG_NAME(btp)); @@ -1567,10 +1482,10 @@ xfs_setsize_buftarg_flags( } /* -* When allocating the initial buffer target we have not yet -* read in the superblock, so don't know what sized sectors -* are being used is at this early stage. Play safe. -*/ + * When allocating the initial buffer target we have not yet + * read in the superblock, so don't know what sized sectors + * are being used is at this early stage. Play safe. + */ STATIC int xfs_setsize_buftarg_early( xfs_buftarg_t *btp, @@ -1618,7 +1533,7 @@ xfs_mapping_buftarg( mapping->a_ops = &mapping_aops; mapping->backing_dev_info = bdi; mapping_set_gfp_mask(mapping, GFP_NOFS); - btp->pbr_mapping = mapping; + btp->bt_mapping = mapping; return 0; } @@ -1651,8 +1566,8 @@ xfs_alloc_buftarg( btp = kmem_zalloc(sizeof(*btp), KM_SLEEP); - btp->pbr_dev = bdev->bd_dev; - btp->pbr_bdev = bdev; + btp->bt_dev = bdev->bd_dev; + btp->bt_bdev = bdev; if (xfs_setsize_buftarg_early(btp, bdev)) goto error; if (xfs_mapping_buftarg(btp, bdev)) @@ -1669,63 +1584,61 @@ error: /* - * Pagebuf delayed write buffer handling + * Delayed write buffer handling */ STATIC void -pagebuf_delwri_queue( - xfs_buf_t *pb, +xfs_buf_delwri_queue( + xfs_buf_t *bp, int unlock) { - struct list_head *dwq = &pb->pb_target->bt_delwrite_queue; - spinlock_t *dwlk = &pb->pb_target->bt_delwrite_lock; + struct list_head *dwq = &bp->b_target->bt_delwrite_queue; + spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; - PB_TRACE(pb, "delwri_q", (long)unlock); - ASSERT((pb->pb_flags & (PBF_DELWRI|PBF_ASYNC)) == - (PBF_DELWRI|PBF_ASYNC)); + XB_TRACE(bp, "delwri_q", (long)unlock); + ASSERT((bp->b_flags&(XBF_DELWRI|XBF_ASYNC)) == (XBF_DELWRI|XBF_ASYNC)); spin_lock(dwlk); /* If already in the queue, dequeue and place at tail */ - if (!list_empty(&pb->pb_list)) { - ASSERT(pb->pb_flags & _PBF_DELWRI_Q); - if (unlock) { - atomic_dec(&pb->pb_hold); - } - list_del(&pb->pb_list); + if (!list_empty(&bp->b_list)) { + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + if (unlock) + atomic_dec(&bp->b_hold); + list_del(&bp->b_list); } - pb->pb_flags |= _PBF_DELWRI_Q; - list_add_tail(&pb->pb_list, dwq); - pb->pb_queuetime = jiffies; + bp->b_flags |= _XBF_DELWRI_Q; + list_add_tail(&bp->b_list, dwq); + bp->b_queuetime = jiffies; spin_unlock(dwlk); if (unlock) - pagebuf_unlock(pb); + xfs_buf_unlock(bp); } void -pagebuf_delwri_dequeue( - xfs_buf_t *pb) +xfs_buf_delwri_dequeue( + xfs_buf_t *bp) { - spinlock_t *dwlk = &pb->pb_target->bt_delwrite_lock; + spinlock_t *dwlk = &bp->b_target->bt_delwrite_lock; int dequeued = 0; spin_lock(dwlk); - if ((pb->pb_flags & PBF_DELWRI) && !list_empty(&pb->pb_list)) { - ASSERT(pb->pb_flags & _PBF_DELWRI_Q); - list_del_init(&pb->pb_list); + if ((bp->b_flags & XBF_DELWRI) && !list_empty(&bp->b_list)) { + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + list_del_init(&bp->b_list); dequeued = 1; } - pb->pb_flags &= ~(PBF_DELWRI|_PBF_DELWRI_Q); + bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); spin_unlock(dwlk); if (dequeued) - pagebuf_rele(pb); + xfs_buf_rele(bp); - PB_TRACE(pb, "delwri_dq", (long)dequeued); + XB_TRACE(bp, "delwri_dq", (long)dequeued); } STATIC void -pagebuf_runall_queues( +xfs_buf_runall_queues( struct workqueue_struct *queue) { flush_workqueue(queue); @@ -1740,9 +1653,9 @@ xfsbufd_wakeup( spin_lock(&xfs_buftarg_lock); list_for_each_entry_safe(btp, n, &xfs_buftarg_list, bt_list) { - if (test_bit(BT_FORCE_SLEEP, &btp->bt_flags)) + if (test_bit(XBT_FORCE_SLEEP, &btp->bt_flags)) continue; - set_bit(BT_FORCE_FLUSH, &btp->bt_flags); + set_bit(XBT_FORCE_FLUSH, &btp->bt_flags); barrier(); wake_up_process(btp->bt_task); } @@ -1757,7 +1670,7 @@ xfsbufd( struct list_head tmp; unsigned long age; xfs_buftarg_t *target = (xfs_buftarg_t *)data; - xfs_buf_t *pb, *n; + xfs_buf_t *bp, *n; struct list_head *dwq = &target->bt_delwrite_queue; spinlock_t *dwlk = &target->bt_delwrite_lock; @@ -1766,10 +1679,10 @@ xfsbufd( INIT_LIST_HEAD(&tmp); do { if (unlikely(freezing(current))) { - set_bit(BT_FORCE_SLEEP, &target->bt_flags); + set_bit(XBT_FORCE_SLEEP, &target->bt_flags); refrigerator(); } else { - clear_bit(BT_FORCE_SLEEP, &target->bt_flags); + clear_bit(XBT_FORCE_SLEEP, &target->bt_flags); } schedule_timeout_interruptible( @@ -1777,49 +1690,49 @@ xfsbufd( age = xfs_buf_age_centisecs * msecs_to_jiffies(10); spin_lock(dwlk); - list_for_each_entry_safe(pb, n, dwq, pb_list) { - PB_TRACE(pb, "walkq1", (long)pagebuf_ispin(pb)); - ASSERT(pb->pb_flags & PBF_DELWRI); + list_for_each_entry_safe(bp, n, dwq, b_list) { + XB_TRACE(bp, "walkq1", (long)xfs_buf_ispin(bp)); + ASSERT(bp->b_flags & XBF_DELWRI); - if (!pagebuf_ispin(pb) && !pagebuf_cond_lock(pb)) { - if (!test_bit(BT_FORCE_FLUSH, + if (!xfs_buf_ispin(bp) && !xfs_buf_cond_lock(bp)) { + if (!test_bit(XBT_FORCE_FLUSH, &target->bt_flags) && time_before(jiffies, - pb->pb_queuetime + age)) { - pagebuf_unlock(pb); + bp->b_queuetime + age)) { + xfs_buf_unlock(bp); break; } - pb->pb_flags &= ~(PBF_DELWRI|_PBF_DELWRI_Q); - pb->pb_flags |= PBF_WRITE; - list_move(&pb->pb_list, &tmp); + bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); + bp->b_flags |= XBF_WRITE; + list_move(&bp->b_list, &tmp); } } spin_unlock(dwlk); while (!list_empty(&tmp)) { - pb = list_entry(tmp.next, xfs_buf_t, pb_list); - ASSERT(target == pb->pb_target); + bp = list_entry(tmp.next, xfs_buf_t, b_list); + ASSERT(target == bp->b_target); - list_del_init(&pb->pb_list); - pagebuf_iostrategy(pb); + list_del_init(&bp->b_list); + xfs_buf_iostrategy(bp); - blk_run_address_space(target->pbr_mapping); + blk_run_address_space(target->bt_mapping); } if (as_list_len > 0) purge_addresses(); - clear_bit(BT_FORCE_FLUSH, &target->bt_flags); + clear_bit(XBT_FORCE_FLUSH, &target->bt_flags); } while (!kthread_should_stop()); return 0; } /* - * Go through all incore buffers, and release buffers if they belong to - * the given device. This is used in filesystem error handling to - * preserve the consistency of its metadata. + * Go through all incore buffers, and release buffers if they belong to + * the given device. This is used in filesystem error handling to + * preserve the consistency of its metadata. */ int xfs_flush_buftarg( @@ -1827,73 +1740,72 @@ xfs_flush_buftarg( int wait) { struct list_head tmp; - xfs_buf_t *pb, *n; + xfs_buf_t *bp, *n; int pincount = 0; struct list_head *dwq = &target->bt_delwrite_queue; spinlock_t *dwlk = &target->bt_delwrite_lock; - pagebuf_runall_queues(xfsdatad_workqueue); - pagebuf_runall_queues(xfslogd_workqueue); + xfs_buf_runall_queues(xfsdatad_workqueue); + xfs_buf_runall_queues(xfslogd_workqueue); INIT_LIST_HEAD(&tmp); spin_lock(dwlk); - list_for_each_entry_safe(pb, n, dwq, pb_list) { - - ASSERT(pb->pb_target == target); - ASSERT(pb->pb_flags & (PBF_DELWRI|_PBF_DELWRI_Q)); - PB_TRACE(pb, "walkq2", (long)pagebuf_ispin(pb)); - if (pagebuf_ispin(pb)) { + list_for_each_entry_safe(bp, n, dwq, b_list) { + ASSERT(bp->b_target == target); + ASSERT(bp->b_flags & (XBF_DELWRI | _XBF_DELWRI_Q)); + XB_TRACE(bp, "walkq2", (long)xfs_buf_ispin(bp)); + if (xfs_buf_ispin(bp)) { pincount++; continue; } - list_move(&pb->pb_list, &tmp); + list_move(&bp->b_list, &tmp); } spin_unlock(dwlk); /* * Dropped the delayed write list lock, now walk the temporary list */ - list_for_each_entry_safe(pb, n, &tmp, pb_list) { - pagebuf_lock(pb); - pb->pb_flags &= ~(PBF_DELWRI|_PBF_DELWRI_Q); - pb->pb_flags |= PBF_WRITE; + list_for_each_entry_safe(bp, n, &tmp, b_list) { + xfs_buf_lock(bp); + bp->b_flags &= ~(XBF_DELWRI|_XBF_DELWRI_Q); + bp->b_flags |= XBF_WRITE; if (wait) - pb->pb_flags &= ~PBF_ASYNC; + bp->b_flags &= ~XBF_ASYNC; else - list_del_init(&pb->pb_list); + list_del_init(&bp->b_list); - pagebuf_iostrategy(pb); + xfs_buf_iostrategy(bp); } /* * Remaining list items must be flushed before returning */ while (!list_empty(&tmp)) { - pb = list_entry(tmp.next, xfs_buf_t, pb_list); + bp = list_entry(tmp.next, xfs_buf_t, b_list); - list_del_init(&pb->pb_list); - xfs_iowait(pb); - xfs_buf_relse(pb); + list_del_init(&bp->b_list); + xfs_iowait(bp); + xfs_buf_relse(bp); } if (wait) - blk_run_address_space(target->pbr_mapping); + blk_run_address_space(target->bt_mapping); return pincount; } int __init -pagebuf_init(void) +xfs_buf_init(void) { int error = -ENOMEM; -#ifdef PAGEBUF_TRACE - pagebuf_trace_buf = ktrace_alloc(PAGEBUF_TRACE_SIZE, KM_SLEEP); +#ifdef XFS_BUF_TRACE + xfs_buf_trace_buf = ktrace_alloc(XFS_BUF_TRACE_SIZE, KM_SLEEP); #endif - pagebuf_zone = kmem_zone_init(sizeof(xfs_buf_t), "xfs_buf"); - if (!pagebuf_zone) + xfs_buf_zone = kmem_zone_init(sizeof(xfs_buf_t), "xfs_buf"); + if (!xfs_buf_zone) goto out_free_trace_buf; xfslogd_workqueue = create_workqueue("xfslogd"); @@ -1904,8 +1816,8 @@ pagebuf_init(void) if (!xfsdatad_workqueue) goto out_destroy_xfslogd_workqueue; - pagebuf_shake = kmem_shake_register(xfsbufd_wakeup); - if (!pagebuf_shake) + xfs_buf_shake = kmem_shake_register(xfsbufd_wakeup); + if (!xfs_buf_shake) goto out_destroy_xfsdatad_workqueue; return 0; @@ -1915,22 +1827,22 @@ pagebuf_init(void) out_destroy_xfslogd_workqueue: destroy_workqueue(xfslogd_workqueue); out_free_buf_zone: - kmem_zone_destroy(pagebuf_zone); + kmem_zone_destroy(xfs_buf_zone); out_free_trace_buf: -#ifdef PAGEBUF_TRACE - ktrace_free(pagebuf_trace_buf); +#ifdef XFS_BUF_TRACE + ktrace_free(xfs_buf_trace_buf); #endif return error; } void -pagebuf_terminate(void) +xfs_buf_terminate(void) { - kmem_shake_deregister(pagebuf_shake); + kmem_shake_deregister(xfs_buf_shake); destroy_workqueue(xfsdatad_workqueue); destroy_workqueue(xfslogd_workqueue); - kmem_zone_destroy(pagebuf_zone); -#ifdef PAGEBUF_TRACE - ktrace_free(pagebuf_trace_buf); + kmem_zone_destroy(xfs_buf_zone); +#ifdef XFS_BUF_TRACE + ktrace_free(xfs_buf_trace_buf); #endif } diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index f721d47..4dd6592 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -32,44 +32,47 @@ * Base types */ -#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL)) - -#define page_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE) -#define page_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT) -#define page_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT) -#define page_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK) - -typedef enum page_buf_rw_e { - PBRW_READ = 1, /* transfer into target memory */ - PBRW_WRITE = 2, /* transfer from target memory */ - PBRW_ZERO = 3 /* Zero target memory */ -} page_buf_rw_t; - - -typedef enum page_buf_flags_e { /* pb_flags values */ - PBF_READ = (1 << 0), /* buffer intended for reading from device */ - PBF_WRITE = (1 << 1), /* buffer intended for writing to device */ - PBF_MAPPED = (1 << 2), /* buffer mapped (pb_addr valid) */ - PBF_ASYNC = (1 << 4), /* initiator will not wait for completion */ - PBF_DONE = (1 << 5), /* all pages in the buffer uptodate */ - PBF_DELWRI = (1 << 6), /* buffer has dirty pages */ - PBF_STALE = (1 << 7), /* buffer has been staled, do not find it */ - PBF_FS_MANAGED = (1 << 8), /* filesystem controls freeing memory */ - PBF_ORDERED = (1 << 11), /* use ordered writes */ - PBF_READ_AHEAD = (1 << 12), /* asynchronous read-ahead */ +#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL)) + +#define xfs_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE) +#define xfs_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE-1) >> PAGE_CACHE_SHIFT) +#define xfs_buf_btoct(dd) ((dd) >> PAGE_CACHE_SHIFT) +#define xfs_buf_poff(aa) ((aa) & ~PAGE_CACHE_MASK) + +typedef enum { + XBRW_READ = 1, /* transfer into target memory */ + XBRW_WRITE = 2, /* transfer from target memory */ + XBRW_ZERO = 3, /* Zero target memory */ +} xfs_buf_rw_t; + +typedef enum { + XBF_READ = (1 << 0), /* buffer intended for reading from device */ + XBF_WRITE = (1 << 1), /* buffer intended for writing to device */ + XBF_MAPPED = (1 << 2), /* buffer mapped (b_addr valid) */ + XBF_ASYNC = (1 << 4), /* initiator will not wait for completion */ + XBF_DONE = (1 << 5), /* all pages in the buffer uptodate */ + XBF_DELWRI = (1 << 6), /* buffer has dirty pages */ + XBF_STALE = (1 << 7), /* buffer has been staled, do not find it */ + XBF_FS_MANAGED = (1 << 8), /* filesystem controls freeing memory */ + XBF_ORDERED = (1 << 11), /* use ordered writes */ + XBF_READ_AHEAD = (1 << 12), /* asynchronous read-ahead */ /* flags used only as arguments to access routines */ - PBF_LOCK = (1 << 14), /* lock requested */ - PBF_TRYLOCK = (1 << 15), /* lock requested, but do not wait */ - PBF_DONT_BLOCK = (1 << 16), /* do not block in current thread */ + XBF_LOCK = (1 << 14), /* lock requested */ + XBF_TRYLOCK = (1 << 15), /* lock requested, but do not wait */ + XBF_DONT_BLOCK = (1 << 16), /* do not block in current thread */ /* flags used only internally */ - _PBF_PAGE_CACHE = (1 << 17),/* backed by pagecache */ - _PBF_KMEM_ALLOC = (1 << 18),/* backed by kmem_alloc() */ - _PBF_RUN_QUEUES = (1 << 19),/* run block device task queue */ - _PBF_DELWRI_Q = (1 << 21), /* buffer on delwri queue */ -} page_buf_flags_t; + _XBF_PAGE_CACHE = (1 << 17),/* backed by pagecache */ + _XBF_KMEM_ALLOC = (1 << 18),/* backed by kmem_alloc() */ + _XBF_RUN_QUEUES = (1 << 19),/* run block device task queue */ + _XBF_DELWRI_Q = (1 << 21), /* buffer on delwri queue */ +} xfs_buf_flags_t; +typedef enum { + XBT_FORCE_SLEEP = (0 << 1), + XBT_FORCE_FLUSH = (1 << 1), +} xfs_buftarg_flags_t; typedef struct xfs_bufhash { struct list_head bh_list; @@ -77,14 +80,14 @@ typedef struct xfs_bufhash { } xfs_bufhash_t; typedef struct xfs_buftarg { - dev_t pbr_dev; - struct block_device *pbr_bdev; - struct address_space *pbr_mapping; - unsigned int pbr_bsize; - unsigned int pbr_sshift; - size_t pbr_smask; - - /* per-device buffer hash table */ + dev_t bt_dev; + struct block_device *bt_bdev; + struct address_space *bt_mapping; + unsigned int bt_bsize; + unsigned int bt_sshift; + size_t bt_smask; + + /* per device buffer hash table */ uint bt_hashmask; uint bt_hashshift; xfs_bufhash_t *bt_hash; @@ -94,469 +97,333 @@ typedef struct xfs_buftarg { struct list_head bt_list; struct list_head bt_delwrite_queue; spinlock_t bt_delwrite_lock; - uint bt_flags; -#define BT_FORCE_SLEEP 1 -#define BT_FORCE_FLUSH 2 + unsigned long bt_flags; } xfs_buftarg_t; /* - * xfs_buf_t: Buffer structure for page cache-based buffers + * xfs_buf_t: Buffer structure for pagecache-based buffers * - * This buffer structure is used by the page cache buffer management routines - * to refer to an assembly of pages forming a logical buffer. The actual I/O - * is performed with buffer_head structures, as required by drivers. - * - * The buffer structure is used on temporary basis only, and discarded when - * released. The real data storage is recorded in the page cache. Metadata is + * This buffer structure is used by the pagecache buffer management routines + * to refer to an assembly of pages forming a logical buffer. + * + * The buffer structure is used on a temporary basis only, and discarded when + * released. The real data storage is recorded in the pagecache. Buffers are * hashed to the block device on which the file system resides. */ struct xfs_buf; +typedef void (*xfs_buf_iodone_t)(struct xfs_buf *); +typedef void (*xfs_buf_relse_t)(struct xfs_buf *); +typedef int (*xfs_buf_bdstrat_t)(struct xfs_buf *); -/* call-back function on I/O completion */ -typedef void (*page_buf_iodone_t)(struct xfs_buf *); -/* call-back function on I/O completion */ -typedef void (*page_buf_relse_t)(struct xfs_buf *); -/* pre-write function */ -typedef int (*page_buf_bdstrat_t)(struct xfs_buf *); - -#define PB_PAGES 2 +#define XB_PAGES 2 typedef struct xfs_buf { - struct semaphore pb_sema; /* semaphore for lockables */ - unsigned long pb_queuetime; /* time buffer was queued */ - atomic_t pb_pin_count; /* pin count */ - wait_queue_head_t pb_waiters; /* unpin waiters */ - struct list_head pb_list; - page_buf_flags_t pb_flags; /* status flags */ - struct list_head pb_hash_list; /* hash table list */ - xfs_bufhash_t *pb_hash; /* hash table list start */ - xfs_buftarg_t *pb_target; /* buffer target (device) */ - atomic_t pb_hold; /* reference count */ - xfs_daddr_t pb_bn; /* block number for I/O */ - loff_t pb_file_offset; /* offset in file */ - size_t pb_buffer_length; /* size of buffer in bytes */ - size_t pb_count_desired; /* desired transfer size */ - void *pb_addr; /* virtual address of buffer */ - struct work_struct pb_iodone_work; - atomic_t pb_io_remaining;/* #outstanding I/O requests */ - page_buf_iodone_t pb_iodone; /* I/O completion function */ - page_buf_relse_t pb_relse; /* releasing function */ - page_buf_bdstrat_t pb_strat; /* pre-write function */ - struct semaphore pb_iodonesema; /* Semaphore for I/O waiters */ - void *pb_fspriv; - void *pb_fspriv2; - void *pb_fspriv3; - unsigned short pb_error; /* error code on I/O */ - unsigned short pb_locked; /* page array is locked */ - unsigned int pb_page_count; /* size of page array */ - unsigned int pb_offset; /* page offset in first page */ - struct page **pb_pages; /* array of page pointers */ - struct page *pb_page_array[PB_PAGES]; /* inline pages */ -#ifdef PAGEBUF_LOCK_TRACKING - int pb_last_holder; + struct semaphore b_sema; /* semaphore for lockables */ + unsigned long b_queuetime; /* time buffer was queued */ + atomic_t b_pin_count; /* pin count */ + wait_queue_head_t b_waiters; /* unpin waiters */ + struct list_head b_list; + xfs_buf_flags_t b_flags; /* status flags */ + struct list_head b_hash_list; /* hash table list */ + xfs_bufhash_t *b_hash; /* hash table list start */ + xfs_buftarg_t *b_target; /* buffer target (device) */ + atomic_t b_hold; /* reference count */ + xfs_daddr_t b_bn; /* block number for I/O */ + xfs_off_t b_file_offset; /* offset in file */ + size_t b_buffer_length;/* size of buffer in bytes */ + size_t b_count_desired;/* desired transfer size */ + void *b_addr; /* virtual address of buffer */ + struct work_struct b_iodone_work; + atomic_t b_io_remaining; /* #outstanding I/O requests */ + xfs_buf_iodone_t b_iodone; /* I/O completion function */ + xfs_buf_relse_t b_relse; /* releasing function */ + xfs_buf_bdstrat_t b_strat; /* pre-write function */ + struct semaphore b_iodonesema; /* Semaphore for I/O waiters */ + void *b_fspriv; + void *b_fspriv2; + void *b_fspriv3; + unsigned short b_error; /* error code on I/O */ + unsigned short b_locked; /* page array is locked */ + unsigned int b_page_count; /* size of page array */ + unsigned int b_offset; /* page offset in first page */ + struct page **b_pages; /* array of page pointers */ + struct page *b_page_array[XB_PAGES]; /* inline pages */ +#ifdef XFS_BUF_LOCK_TRACKING + int b_last_holder; #endif } xfs_buf_t; /* Finding and Reading Buffers */ - -extern xfs_buf_t *_pagebuf_find( /* find buffer for block if */ - /* the block is in memory */ - xfs_buftarg_t *, /* inode for block */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t, /* PBF_LOCK */ - xfs_buf_t *); /* newly allocated buffer */ - +extern xfs_buf_t *_xfs_buf_find(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t, xfs_buf_t *); #define xfs_incore(buftarg,blkno,len,lockit) \ - _pagebuf_find(buftarg, blkno ,len, lockit, NULL) - -extern xfs_buf_t *xfs_buf_get_flags( /* allocate a buffer */ - xfs_buftarg_t *, /* inode for buffer */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t); /* PBF_LOCK, PBF_READ, */ - /* PBF_ASYNC */ + _xfs_buf_find(buftarg, blkno ,len, lockit, NULL) +extern xfs_buf_t *xfs_buf_get_flags(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); #define xfs_buf_get(target, blkno, len, flags) \ - xfs_buf_get_flags((target), (blkno), (len), PBF_LOCK | PBF_MAPPED) - -extern xfs_buf_t *xfs_buf_read_flags( /* allocate and read a buffer */ - xfs_buftarg_t *, /* inode for buffer */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t); /* PBF_LOCK, PBF_ASYNC */ + xfs_buf_get_flags((target), (blkno), (len), XBF_LOCK | XBF_MAPPED) +extern xfs_buf_t *xfs_buf_read_flags(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); #define xfs_buf_read(target, blkno, len, flags) \ - xfs_buf_read_flags((target), (blkno), (len), PBF_LOCK | PBF_MAPPED) + xfs_buf_read_flags((target), (blkno), (len), XBF_LOCK | XBF_MAPPED) -extern xfs_buf_t *pagebuf_get_empty( /* allocate pagebuf struct with */ - /* no memory or disk address */ - size_t len, - xfs_buftarg_t *); /* mount point "fake" inode */ - -extern xfs_buf_t *pagebuf_get_no_daddr(/* allocate pagebuf struct */ - /* without disk address */ - size_t len, - xfs_buftarg_t *); /* mount point "fake" inode */ - -extern int pagebuf_associate_memory( - xfs_buf_t *, - void *, - size_t); - -extern void pagebuf_hold( /* increment reference count */ - xfs_buf_t *); /* buffer to hold */ - -extern void pagebuf_readahead( /* read ahead into cache */ - xfs_buftarg_t *, /* target for buffer (or NULL) */ - loff_t, /* starting offset of range */ - size_t, /* length of range */ - page_buf_flags_t); /* additional read flags */ +extern xfs_buf_t *xfs_buf_get_empty(size_t, xfs_buftarg_t *); +extern xfs_buf_t *xfs_buf_get_noaddr(size_t, xfs_buftarg_t *); +extern int xfs_buf_associate_memory(xfs_buf_t *, void *, size_t); +extern void xfs_buf_hold(xfs_buf_t *); +extern void xfs_buf_readahead(xfs_buftarg_t *, xfs_off_t, size_t, + xfs_buf_flags_t); /* Releasing Buffers */ - -extern void pagebuf_free( /* deallocate a buffer */ - xfs_buf_t *); /* buffer to deallocate */ - -extern void pagebuf_rele( /* release hold on a buffer */ - xfs_buf_t *); /* buffer to release */ +extern void xfs_buf_free(xfs_buf_t *); +extern void xfs_buf_rele(xfs_buf_t *); /* Locking and Unlocking Buffers */ - -extern int pagebuf_cond_lock( /* lock buffer, if not locked */ - /* (returns -EBUSY if locked) */ - xfs_buf_t *); /* buffer to lock */ - -extern int pagebuf_lock_value( /* return count on lock */ - xfs_buf_t *); /* buffer to check */ - -extern int pagebuf_lock( /* lock buffer */ - xfs_buf_t *); /* buffer to lock */ - -extern void pagebuf_unlock( /* unlock buffer */ - xfs_buf_t *); /* buffer to unlock */ +extern int xfs_buf_cond_lock(xfs_buf_t *); +extern int xfs_buf_lock_value(xfs_buf_t *); +extern void xfs_buf_lock(xfs_buf_t *); +extern void xfs_buf_unlock(xfs_buf_t *); /* Buffer Read and Write Routines */ - -extern void pagebuf_iodone( /* mark buffer I/O complete */ - xfs_buf_t *, /* buffer to mark */ - int); /* run completion locally, or in - * a helper thread. */ - -extern void pagebuf_ioerror( /* mark buffer in error (or not) */ - xfs_buf_t *, /* buffer to mark */ - int); /* error to store (0 if none) */ - -extern int pagebuf_iostart( /* start I/O on a buffer */ - xfs_buf_t *, /* buffer to start */ - page_buf_flags_t); /* PBF_LOCK, PBF_ASYNC, */ - /* PBF_READ, PBF_WRITE, */ - /* PBF_DELWRI */ - -extern int pagebuf_iorequest( /* start real I/O */ - xfs_buf_t *); /* buffer to convey to device */ - -extern int pagebuf_iowait( /* wait for buffer I/O done */ - xfs_buf_t *); /* buffer to wait on */ - -extern void pagebuf_iomove( /* move data in/out of pagebuf */ - xfs_buf_t *, /* buffer to manipulate */ - size_t, /* starting buffer offset */ - size_t, /* length in buffer */ - caddr_t, /* data pointer */ - page_buf_rw_t); /* direction */ - -static inline int pagebuf_iostrategy(xfs_buf_t *pb) +extern void xfs_buf_ioend(xfs_buf_t *, int); +extern void xfs_buf_ioerror(xfs_buf_t *, int); +extern int xfs_buf_iostart(xfs_buf_t *, xfs_buf_flags_t); +extern int xfs_buf_iorequest(xfs_buf_t *); +extern int xfs_buf_iowait(xfs_buf_t *); +extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, xfs_caddr_t, + xfs_buf_rw_t); + +static inline int xfs_buf_iostrategy(xfs_buf_t *bp) { - return pb->pb_strat ? pb->pb_strat(pb) : pagebuf_iorequest(pb); + return bp->b_strat ? bp->b_strat(bp) : xfs_buf_iorequest(bp); } -static inline int pagebuf_geterror(xfs_buf_t *pb) +static inline int xfs_buf_geterror(xfs_buf_t *bp) { - return pb ? pb->pb_error : ENOMEM; + return bp ? bp->b_error : ENOMEM; } /* Buffer Utility Routines */ - -extern caddr_t pagebuf_offset( /* pointer at offset in buffer */ - xfs_buf_t *, /* buffer to offset into */ - size_t); /* offset */ +extern xfs_caddr_t xfs_buf_offset(xfs_buf_t *, size_t); /* Pinning Buffer Storage in Memory */ - -extern void pagebuf_pin( /* pin buffer in memory */ - xfs_buf_t *); /* buffer to pin */ - -extern void pagebuf_unpin( /* unpin buffered data */ - xfs_buf_t *); /* buffer to unpin */ - -extern int pagebuf_ispin( /* check if buffer is pinned */ - xfs_buf_t *); /* buffer to check */ +extern void xfs_buf_pin(xfs_buf_t *); +extern void xfs_buf_unpin(xfs_buf_t *); +extern int xfs_buf_ispin(xfs_buf_t *); /* Delayed Write Buffer Routines */ - -extern void pagebuf_delwri_dequeue(xfs_buf_t *); +extern void xfs_buf_delwri_dequeue(xfs_buf_t *); /* Buffer Daemon Setup Routines */ +extern int xfs_buf_init(void); +extern void xfs_buf_terminate(void); -extern int pagebuf_init(void); -extern void pagebuf_terminate(void); - - -#ifdef PAGEBUF_TRACE -extern ktrace_t *pagebuf_trace_buf; -extern void pagebuf_trace( - xfs_buf_t *, /* buffer being traced */ - char *, /* description of operation */ - void *, /* arbitrary diagnostic value */ - void *); /* return address */ +#ifdef XFS_BUF_TRACE +extern ktrace_t *xfs_buf_trace_buf; +extern void xfs_buf_trace(xfs_buf_t *, char *, void *, void *); #else -# define pagebuf_trace(pb, id, ptr, ra) do { } while (0) +#define xfs_buf_trace(bp,id,ptr,ra) do { } while (0) #endif -#define pagebuf_target_name(target) \ - ({ char __b[BDEVNAME_SIZE]; bdevname((target)->pbr_bdev, __b); __b; }) +#define xfs_buf_target_name(target) \ + ({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; }) +#define XFS_B_ASYNC XBF_ASYNC +#define XFS_B_DELWRI XBF_DELWRI +#define XFS_B_READ XBF_READ +#define XFS_B_WRITE XBF_WRITE +#define XFS_B_STALE XBF_STALE -/* These are just for xfs_syncsub... it sets an internal variable - * then passes it to VOP_FLUSH_PAGES or adds the flags to a newly gotten buf_t - */ -#define XFS_B_ASYNC PBF_ASYNC -#define XFS_B_DELWRI PBF_DELWRI -#define XFS_B_READ PBF_READ -#define XFS_B_WRITE PBF_WRITE -#define XFS_B_STALE PBF_STALE - -#define XFS_BUF_TRYLOCK PBF_TRYLOCK -#define XFS_INCORE_TRYLOCK PBF_TRYLOCK -#define XFS_BUF_LOCK PBF_LOCK -#define XFS_BUF_MAPPED PBF_MAPPED - -#define BUF_BUSY PBF_DONT_BLOCK - -#define XFS_BUF_BFLAGS(x) ((x)->pb_flags) -#define XFS_BUF_ZEROFLAGS(x) \ - ((x)->pb_flags &= ~(PBF_READ|PBF_WRITE|PBF_ASYNC|PBF_DELWRI)) - -#define XFS_BUF_STALE(x) ((x)->pb_flags |= XFS_B_STALE) -#define XFS_BUF_UNSTALE(x) ((x)->pb_flags &= ~XFS_B_STALE) -#define XFS_BUF_ISSTALE(x) ((x)->pb_flags & XFS_B_STALE) -#define XFS_BUF_SUPER_STALE(x) do { \ - XFS_BUF_STALE(x); \ - pagebuf_delwri_dequeue(x); \ - XFS_BUF_DONE(x); \ - } while (0) +#define XFS_BUF_TRYLOCK XBF_TRYLOCK +#define XFS_INCORE_TRYLOCK XBF_TRYLOCK +#define XFS_BUF_LOCK XBF_LOCK +#define XFS_BUF_MAPPED XBF_MAPPED -#define XFS_BUF_MANAGE PBF_FS_MANAGED -#define XFS_BUF_UNMANAGE(x) ((x)->pb_flags &= ~PBF_FS_MANAGED) - -#define XFS_BUF_DELAYWRITE(x) ((x)->pb_flags |= PBF_DELWRI) -#define XFS_BUF_UNDELAYWRITE(x) pagebuf_delwri_dequeue(x) -#define XFS_BUF_ISDELAYWRITE(x) ((x)->pb_flags & PBF_DELWRI) - -#define XFS_BUF_ERROR(x,no) pagebuf_ioerror(x,no) -#define XFS_BUF_GETERROR(x) pagebuf_geterror(x) -#define XFS_BUF_ISERROR(x) (pagebuf_geterror(x)?1:0) - -#define XFS_BUF_DONE(x) ((x)->pb_flags |= PBF_DONE) -#define XFS_BUF_UNDONE(x) ((x)->pb_flags &= ~PBF_DONE) -#define XFS_BUF_ISDONE(x) ((x)->pb_flags & PBF_DONE) - -#define XFS_BUF_BUSY(x) do { } while (0) -#define XFS_BUF_UNBUSY(x) do { } while (0) -#define XFS_BUF_ISBUSY(x) (1) - -#define XFS_BUF_ASYNC(x) ((x)->pb_flags |= PBF_ASYNC) -#define XFS_BUF_UNASYNC(x) ((x)->pb_flags &= ~PBF_ASYNC) -#define XFS_BUF_ISASYNC(x) ((x)->pb_flags & PBF_ASYNC) - -#define XFS_BUF_ORDERED(x) ((x)->pb_flags |= PBF_ORDERED) -#define XFS_BUF_UNORDERED(x) ((x)->pb_flags &= ~PBF_ORDERED) -#define XFS_BUF_ISORDERED(x) ((x)->pb_flags & PBF_ORDERED) - -#define XFS_BUF_SHUT(x) printk("XFS_BUF_SHUT not implemented yet\n") -#define XFS_BUF_UNSHUT(x) printk("XFS_BUF_UNSHUT not implemented yet\n") -#define XFS_BUF_ISSHUT(x) (0) - -#define XFS_BUF_HOLD(x) pagebuf_hold(x) -#define XFS_BUF_READ(x) ((x)->pb_flags |= PBF_READ) -#define XFS_BUF_UNREAD(x) ((x)->pb_flags &= ~PBF_READ) -#define XFS_BUF_ISREAD(x) ((x)->pb_flags & PBF_READ) - -#define XFS_BUF_WRITE(x) ((x)->pb_flags |= PBF_WRITE) -#define XFS_BUF_UNWRITE(x) ((x)->pb_flags &= ~PBF_WRITE) -#define XFS_BUF_ISWRITE(x) ((x)->pb_flags & PBF_WRITE) - -#define XFS_BUF_ISUNINITIAL(x) (0) -#define XFS_BUF_UNUNINITIAL(x) (0) - -#define XFS_BUF_BP_ISMAPPED(bp) 1 - -#define XFS_BUF_IODONE_FUNC(buf) (buf)->pb_iodone -#define XFS_BUF_SET_IODONE_FUNC(buf, func) \ - (buf)->pb_iodone = (func) -#define XFS_BUF_CLR_IODONE_FUNC(buf) \ - (buf)->pb_iodone = NULL -#define XFS_BUF_SET_BDSTRAT_FUNC(buf, func) \ - (buf)->pb_strat = (func) -#define XFS_BUF_CLR_BDSTRAT_FUNC(buf) \ - (buf)->pb_strat = NULL - -#define XFS_BUF_FSPRIVATE(buf, type) \ - ((type)(buf)->pb_fspriv) -#define XFS_BUF_SET_FSPRIVATE(buf, value) \ - (buf)->pb_fspriv = (void *)(value) -#define XFS_BUF_FSPRIVATE2(buf, type) \ - ((type)(buf)->pb_fspriv2) -#define XFS_BUF_SET_FSPRIVATE2(buf, value) \ - (buf)->pb_fspriv2 = (void *)(value) -#define XFS_BUF_FSPRIVATE3(buf, type) \ - ((type)(buf)->pb_fspriv3) -#define XFS_BUF_SET_FSPRIVATE3(buf, value) \ - (buf)->pb_fspriv3 = (void *)(value) -#define XFS_BUF_SET_START(buf) - -#define XFS_BUF_SET_BRELSE_FUNC(buf, value) \ - (buf)->pb_relse = (value) - -#define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->pb_addr) - -static inline xfs_caddr_t xfs_buf_offset(xfs_buf_t *bp, size_t offset) -{ - if (bp->pb_flags & PBF_MAPPED) - return XFS_BUF_PTR(bp) + offset; - return (xfs_caddr_t) pagebuf_offset(bp, offset); -} +#define BUF_BUSY XBF_DONT_BLOCK + +#define XFS_BUF_BFLAGS(bp) ((bp)->b_flags) +#define XFS_BUF_ZEROFLAGS(bp) \ + ((bp)->b_flags &= ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI)) + +#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XFS_B_STALE) +#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XFS_B_STALE) +#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XFS_B_STALE) +#define XFS_BUF_SUPER_STALE(bp) do { \ + XFS_BUF_STALE(bp); \ + xfs_buf_delwri_dequeue(bp); \ + XFS_BUF_DONE(bp); \ + } while (0) -#define XFS_BUF_SET_PTR(bp, val, count) \ - pagebuf_associate_memory(bp, val, count) -#define XFS_BUF_ADDR(bp) ((bp)->pb_bn) -#define XFS_BUF_SET_ADDR(bp, blk) \ - ((bp)->pb_bn = (xfs_daddr_t)(blk)) -#define XFS_BUF_OFFSET(bp) ((bp)->pb_file_offset) -#define XFS_BUF_SET_OFFSET(bp, off) \ - ((bp)->pb_file_offset = (off)) -#define XFS_BUF_COUNT(bp) ((bp)->pb_count_desired) -#define XFS_BUF_SET_COUNT(bp, cnt) \ - ((bp)->pb_count_desired = (cnt)) -#define XFS_BUF_SIZE(bp) ((bp)->pb_buffer_length) -#define XFS_BUF_SET_SIZE(bp, cnt) \ - ((bp)->pb_buffer_length = (cnt)) -#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) -#define XFS_BUF_SET_VTYPE(bp, type) -#define XFS_BUF_SET_REF(bp, ref) - -#define XFS_BUF_ISPINNED(bp) pagebuf_ispin(bp) - -#define XFS_BUF_VALUSEMA(bp) pagebuf_lock_value(bp) -#define XFS_BUF_CPSEMA(bp) (pagebuf_cond_lock(bp) == 0) -#define XFS_BUF_VSEMA(bp) pagebuf_unlock(bp) -#define XFS_BUF_PSEMA(bp,x) pagebuf_lock(bp) -#define XFS_BUF_V_IODONESEMA(bp) up(&bp->pb_iodonesema); - -/* setup the buffer target from a buftarg structure */ -#define XFS_BUF_SET_TARGET(bp, target) \ - (bp)->pb_target = (target) -#define XFS_BUF_TARGET(bp) ((bp)->pb_target) -#define XFS_BUFTARG_NAME(target) \ - pagebuf_target_name(target) - -#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) -#define XFS_BUF_SET_VTYPE(bp, type) -#define XFS_BUF_SET_REF(bp, ref) - -static inline int xfs_bawrite(void *mp, xfs_buf_t *bp) +#define XFS_BUF_MANAGE XBF_FS_MANAGED +#define XFS_BUF_UNMANAGE(bp) ((bp)->b_flags &= ~XBF_FS_MANAGED) + +#define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI) +#define XFS_BUF_UNDELAYWRITE(bp) xfs_buf_delwri_dequeue(bp) +#define XFS_BUF_ISDELAYWRITE(bp) ((bp)->b_flags & XBF_DELWRI) + +#define XFS_BUF_ERROR(bp,no) xfs_buf_ioerror(bp,no) +#define XFS_BUF_GETERROR(bp) xfs_buf_geterror(bp) +#define XFS_BUF_ISERROR(bp) (xfs_buf_geterror(bp) ? 1 : 0) + +#define XFS_BUF_DONE(bp) ((bp)->b_flags |= XBF_DONE) +#define XFS_BUF_UNDONE(bp) ((bp)->b_flags &= ~XBF_DONE) +#define XFS_BUF_ISDONE(bp) ((bp)->b_flags & XBF_DONE) + +#define XFS_BUF_BUSY(bp) do { } while (0) +#define XFS_BUF_UNBUSY(bp) do { } while (0) +#define XFS_BUF_ISBUSY(bp) (1) + +#define XFS_BUF_ASYNC(bp) ((bp)->b_flags |= XBF_ASYNC) +#define XFS_BUF_UNASYNC(bp) ((bp)->b_flags &= ~XBF_ASYNC) +#define XFS_BUF_ISASYNC(bp) ((bp)->b_flags & XBF_ASYNC) + +#define XFS_BUF_ORDERED(bp) ((bp)->b_flags |= XBF_ORDERED) +#define XFS_BUF_UNORDERED(bp) ((bp)->b_flags &= ~XBF_ORDERED) +#define XFS_BUF_ISORDERED(bp) ((bp)->b_flags & XBF_ORDERED) + +#define XFS_BUF_SHUT(bp) do { } while (0) +#define XFS_BUF_UNSHUT(bp) do { } while (0) +#define XFS_BUF_ISSHUT(bp) (0) + +#define XFS_BUF_HOLD(bp) xfs_buf_hold(bp) +#define XFS_BUF_READ(bp) ((bp)->b_flags |= XBF_READ) +#define XFS_BUF_UNREAD(bp) ((bp)->b_flags &= ~XBF_READ) +#define XFS_BUF_ISREAD(bp) ((bp)->b_flags & XBF_READ) + +#define XFS_BUF_WRITE(bp) ((bp)->b_flags |= XBF_WRITE) +#define XFS_BUF_UNWRITE(bp) ((bp)->b_flags &= ~XBF_WRITE) +#define XFS_BUF_ISWRITE(bp) ((bp)->b_flags & XBF_WRITE) + +#define XFS_BUF_ISUNINITIAL(bp) (0) +#define XFS_BUF_UNUNINITIAL(bp) (0) + +#define XFS_BUF_BP_ISMAPPED(bp) (1) + +#define XFS_BUF_IODONE_FUNC(bp) ((bp)->b_iodone) +#define XFS_BUF_SET_IODONE_FUNC(bp, func) ((bp)->b_iodone = (func)) +#define XFS_BUF_CLR_IODONE_FUNC(bp) ((bp)->b_iodone = NULL) +#define XFS_BUF_SET_BDSTRAT_FUNC(bp, func) ((bp)->b_strat = (func)) +#define XFS_BUF_CLR_BDSTRAT_FUNC(bp) ((bp)->b_strat = NULL) + +#define XFS_BUF_FSPRIVATE(bp, type) ((type)(bp)->b_fspriv) +#define XFS_BUF_SET_FSPRIVATE(bp, val) ((bp)->b_fspriv = (void*)(val)) +#define XFS_BUF_FSPRIVATE2(bp, type) ((type)(bp)->b_fspriv2) +#define XFS_BUF_SET_FSPRIVATE2(bp, val) ((bp)->b_fspriv2 = (void*)(val)) +#define XFS_BUF_FSPRIVATE3(bp, type) ((type)(bp)->b_fspriv3) +#define XFS_BUF_SET_FSPRIVATE3(bp, val) ((bp)->b_fspriv3 = (void*)(val)) +#define XFS_BUF_SET_START(bp) do { } while (0) +#define XFS_BUF_SET_BRELSE_FUNC(bp, func) ((bp)->b_relse = (func)) + +#define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->b_addr) +#define XFS_BUF_SET_PTR(bp, val, cnt) xfs_buf_associate_memory(bp, val, cnt) +#define XFS_BUF_ADDR(bp) ((bp)->b_bn) +#define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) +#define XFS_BUF_OFFSET(bp) ((bp)->b_file_offset) +#define XFS_BUF_SET_OFFSET(bp, off) ((bp)->b_file_offset = (off)) +#define XFS_BUF_COUNT(bp) ((bp)->b_count_desired) +#define XFS_BUF_SET_COUNT(bp, cnt) ((bp)->b_count_desired = (cnt)) +#define XFS_BUF_SIZE(bp) ((bp)->b_buffer_length) +#define XFS_BUF_SET_SIZE(bp, cnt) ((bp)->b_buffer_length = (cnt)) + +#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) do { } while (0) +#define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) +#define XFS_BUF_SET_REF(bp, ref) do { } while (0) + +#define XFS_BUF_ISPINNED(bp) xfs_buf_ispin(bp) + +#define XFS_BUF_VALUSEMA(bp) xfs_buf_lock_value(bp) +#define XFS_BUF_CPSEMA(bp) (xfs_buf_cond_lock(bp) == 0) +#define XFS_BUF_VSEMA(bp) xfs_buf_unlock(bp) +#define XFS_BUF_PSEMA(bp,x) xfs_buf_lock(bp) +#define XFS_BUF_V_IODONESEMA(bp) up(&bp->b_iodonesema); + +#define XFS_BUF_SET_TARGET(bp, target) ((bp)->b_target = (target)) +#define XFS_BUF_TARGET(bp) ((bp)->b_target) +#define XFS_BUFTARG_NAME(target) xfs_buf_target_name(target) + +static inline int xfs_bawrite(void *mp, xfs_buf_t *bp) { - bp->pb_fspriv3 = mp; - bp->pb_strat = xfs_bdstrat_cb; - pagebuf_delwri_dequeue(bp); - return pagebuf_iostart(bp, PBF_WRITE | PBF_ASYNC | _PBF_RUN_QUEUES); + bp->b_fspriv3 = mp; + bp->b_strat = xfs_bdstrat_cb; + xfs_buf_delwri_dequeue(bp); + return xfs_buf_iostart(bp, XBF_WRITE | XBF_ASYNC | _XBF_RUN_QUEUES); } -static inline void xfs_buf_relse(xfs_buf_t *bp) +static inline void xfs_buf_relse(xfs_buf_t *bp) { - if (!bp->pb_relse) - pagebuf_unlock(bp); - pagebuf_rele(bp); + if (!bp->b_relse) + xfs_buf_unlock(bp); + xfs_buf_rele(bp); } -#define xfs_bpin(bp) pagebuf_pin(bp) -#define xfs_bunpin(bp) pagebuf_unpin(bp) +#define xfs_bpin(bp) xfs_buf_pin(bp) +#define xfs_bunpin(bp) xfs_buf_unpin(bp) #define xfs_buftrace(id, bp) \ - pagebuf_trace(bp, id, NULL, (void *)__builtin_return_address(0)) + xfs_buf_trace(bp, id, NULL, (void *)__builtin_return_address(0)) -#define xfs_biodone(pb) \ - pagebuf_iodone(pb, 0) +#define xfs_biodone(bp) xfs_buf_ioend(bp, 0) -#define xfs_biomove(pb, off, len, data, rw) \ - pagebuf_iomove((pb), (off), (len), (data), \ - ((rw) == XFS_B_WRITE) ? PBRW_WRITE : PBRW_READ) +#define xfs_biomove(bp, off, len, data, rw) \ + xfs_buf_iomove((bp), (off), (len), (data), \ + ((rw) == XFS_B_WRITE) ? XBRW_WRITE : XBRW_READ) -#define xfs_biozero(pb, off, len) \ - pagebuf_iomove((pb), (off), (len), NULL, PBRW_ZERO) +#define xfs_biozero(bp, off, len) \ + xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) -static inline int XFS_bwrite(xfs_buf_t *pb) +static inline int XFS_bwrite(xfs_buf_t *bp) { - int iowait = (pb->pb_flags & PBF_ASYNC) == 0; + int iowait = (bp->b_flags & XBF_ASYNC) == 0; int error = 0; if (!iowait) - pb->pb_flags |= _PBF_RUN_QUEUES; + bp->b_flags |= _XBF_RUN_QUEUES; - pagebuf_delwri_dequeue(pb); - pagebuf_iostrategy(pb); + xfs_buf_delwri_dequeue(bp); + xfs_buf_iostrategy(bp); if (iowait) { - error = pagebuf_iowait(pb); - xfs_buf_relse(pb); + error = xfs_buf_iowait(bp); + xfs_buf_relse(bp); } return error; } -#define XFS_bdwrite(pb) \ - pagebuf_iostart(pb, PBF_DELWRI | PBF_ASYNC) +#define XFS_bdwrite(bp) xfs_buf_iostart(bp, XBF_DELWRI | XBF_ASYNC) static inline int xfs_bdwrite(void *mp, xfs_buf_t *bp) { - bp->pb_strat = xfs_bdstrat_cb; - bp->pb_fspriv3 = mp; - - return pagebuf_iostart(bp, PBF_DELWRI | PBF_ASYNC); + bp->b_strat = xfs_bdstrat_cb; + bp->b_fspriv3 = mp; + return xfs_buf_iostart(bp, XBF_DELWRI | XBF_ASYNC); } -#define XFS_bdstrat(bp) pagebuf_iorequest(bp) +#define XFS_bdstrat(bp) xfs_buf_iorequest(bp) -#define xfs_iowait(pb) pagebuf_iowait(pb) +#define xfs_iowait(bp) xfs_buf_iowait(bp) #define xfs_baread(target, rablkno, ralen) \ - pagebuf_readahead((target), (rablkno), (ralen), PBF_DONT_BLOCK) - -#define xfs_buf_get_empty(len, target) pagebuf_get_empty((len), (target)) -#define xfs_buf_get_noaddr(len, target) pagebuf_get_no_daddr((len), (target)) -#define xfs_buf_free(bp) pagebuf_free(bp) + xfs_buf_readahead((target), (rablkno), (ralen), XBF_DONT_BLOCK) /* * Handling of buftargs. */ - extern xfs_buftarg_t *xfs_alloc_buftarg(struct block_device *, int); extern void xfs_free_buftarg(xfs_buftarg_t *, int); extern void xfs_wait_buftarg(xfs_buftarg_t *); extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int); extern int xfs_flush_buftarg(xfs_buftarg_t *, int); -#define xfs_getsize_buftarg(buftarg) \ - block_size((buftarg)->pbr_bdev) -#define xfs_readonly_buftarg(buftarg) \ - bdev_read_only((buftarg)->pbr_bdev) -#define xfs_binval(buftarg) \ - xfs_flush_buftarg(buftarg, 1) -#define XFS_bflush(buftarg) \ - xfs_flush_buftarg(buftarg, 1) +#define xfs_getsize_buftarg(buftarg) block_size((buftarg)->bt_bdev) +#define xfs_readonly_buftarg(buftarg) bdev_read_only((buftarg)->bt_bdev) + +#define xfs_binval(buftarg) xfs_flush_buftarg(buftarg, 1) +#define XFS_bflush(buftarg) xfs_flush_buftarg(buftarg, 1) #endif /* __XFS_BUF_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index 2b38539..7ad7b68 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -750,7 +750,7 @@ xfs_ioctl( (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? mp->m_rtdev_targp : mp->m_ddev_targp; - da.d_mem = da.d_miniosz = 1 << target->pbr_sshift; + da.d_mem = da.d_miniosz = 1 << target->bt_sshift; da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1); if (copy_to_user(arg, &da, sizeof(da))) diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index d8e21ba..95efe94 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -232,7 +232,7 @@ static inline void set_buffer_unwritten_io(struct buffer_head *bh) #define xfs_itruncate_data(ip, off) \ (-vmtruncate(LINVFS_GET_IP(XFS_ITOV(ip)), (off))) #define xfs_statvfs_fsid(statp, mp) \ - ({ u64 id = huge_encode_dev((mp)->m_dev); \ + ({ u64 id = huge_encode_dev((mp)->m_ddev_targp->bt_dev); \ __kernel_fsid_t *fsid = &(statp)->f_fsid; \ (fsid->val[0] = (u32)id, fsid->val[1] = (u32)(id >> 32)); }) diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c index 147a288..e0ab45f 100644 --- a/fs/xfs/linux-2.6/xfs_lrw.c +++ b/fs/xfs/linux-2.6/xfs_lrw.c @@ -233,8 +233,8 @@ xfs_read( xfs_buftarg_t *target = (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((*offset & target->pbr_smask) || - (size & target->pbr_smask)) { + if ((*offset & target->bt_smask) || + (size & target->bt_smask)) { if (*offset == ip->i_d.di_size) { return (0); } @@ -618,7 +618,7 @@ xfs_write( (xip->i_d.di_flags & XFS_DIFLAG_REALTIME) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((pos & target->pbr_smask) || (count & target->pbr_smask)) + if ((pos & target->bt_smask) || (count & target->bt_smask)) return XFS_ERROR(-EINVAL); if (!VN_CACHED(vp) && pos < i_size_read(inode)) @@ -938,7 +938,7 @@ xfs_bdstrat_cb(struct xfs_buf *bp) mp = XFS_BUF_FSPRIVATE3(bp, xfs_mount_t *); if (!XFS_FORCED_SHUTDOWN(mp)) { - pagebuf_iorequest(bp); + xfs_buf_iorequest(bp); return 0; } else { xfs_buftrace("XFS__BDSTRAT IOERROR", bp); @@ -991,7 +991,7 @@ xfsbdstrat( * if (XFS_BUF_IS_GRIO(bp)) { */ - pagebuf_iorequest(bp); + xfs_buf_iorequest(bp); return 0; } diff --git a/fs/xfs/linux-2.6/xfs_stats.h b/fs/xfs/linux-2.6/xfs_stats.h index 50027c4..8ba7a2f 100644 --- a/fs/xfs/linux-2.6/xfs_stats.h +++ b/fs/xfs/linux-2.6/xfs_stats.h @@ -109,15 +109,15 @@ struct xfsstats { __uint32_t vn_remove; /* # times vn_remove called */ __uint32_t vn_free; /* # times vn_free called */ #define XFSSTAT_END_BUF (XFSSTAT_END_VNODE_OPS+9) - __uint32_t pb_get; - __uint32_t pb_create; - __uint32_t pb_get_locked; - __uint32_t pb_get_locked_waited; - __uint32_t pb_busy_locked; - __uint32_t pb_miss_locked; - __uint32_t pb_page_retries; - __uint32_t pb_page_found; - __uint32_t pb_get_read; + __uint32_t xb_get; + __uint32_t xb_create; + __uint32_t xb_get_locked; + __uint32_t xb_get_locked_waited; + __uint32_t xb_busy_locked; + __uint32_t xb_miss_locked; + __uint32_t xb_page_retries; + __uint32_t xb_page_found; + __uint32_t xb_get_read; /* Extra precision counters */ __uint64_t xs_xstrat_bytes; __uint64_t xs_write_bytes; diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index d8ec746..556c143 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -309,7 +309,7 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp) return; } - if (mp->m_ddev_targp->pbr_bdev->bd_disk->queue->ordered == + if (mp->m_ddev_targp->bt_bdev->bd_disk->queue->ordered == QUEUE_ORDERED_NONE) { xfs_fs_cmn_err(CE_NOTE, mp, "Disabling barriers, not supported by the underlying device"); @@ -330,7 +330,7 @@ void xfs_blkdev_issue_flush( xfs_buftarg_t *buftarg) { - blkdev_issue_flush(buftarg->pbr_bdev, NULL); + blkdev_issue_flush(buftarg->bt_bdev, NULL); } STATIC struct inode * @@ -969,9 +969,9 @@ init_xfs_fs( void ) if (error < 0) goto undo_zones; - error = pagebuf_init(); + error = xfs_buf_init(); if (error < 0) - goto undo_pagebuf; + goto undo_buffers; vn_init(); xfs_init(); @@ -985,9 +985,9 @@ init_xfs_fs( void ) return 0; undo_register: - pagebuf_terminate(); + xfs_buf_terminate(); -undo_pagebuf: +undo_buffers: linvfs_destroy_zones(); undo_zones: @@ -1001,7 +1001,7 @@ exit_xfs_fs( void ) XFS_DM_EXIT(&xfs_fs_type); unregister_filesystem(&xfs_fs_type); xfs_cleanup(); - pagebuf_terminate(); + xfs_buf_terminate(); linvfs_destroy_zones(); ktrace_uninit(); } diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index fbfa240..cd3cf96 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -308,7 +308,6 @@ typedef struct xfs_mount { xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ -#define m_dev m_ddev_targp->pbr_dev __uint8_t m_dircook_elog; /* log d-cookie entry bits */ __uint8_t m_blkbit_log; /* blocklog + NBBY */ __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c index c4b2087..a59c102 100644 --- a/fs/xfs/xfs_rw.c +++ b/fs/xfs/xfs_rw.c @@ -238,6 +238,7 @@ xfs_bioerror_relse( } return (EIO); } + /* * Prints out an ALERT message about I/O error. */ @@ -252,11 +253,9 @@ xfs_ioerror_alert( "I/O error in filesystem (\"%s\") meta-data dev %s block 0x%llx" " (\"%s\") error %d buf count %zd", (!mp || !mp->m_fsname) ? "(fs name not set)" : mp->m_fsname, - XFS_BUFTARG_NAME(bp->pb_target), - (__uint64_t)blkno, - func, - XFS_BUF_GETERROR(bp), - XFS_BUF_COUNT(bp)); + XFS_BUFTARG_NAME(XFS_BUF_TARGET(bp)), + (__uint64_t)blkno, func, + XFS_BUF_GETERROR(bp), XFS_BUF_COUNT(bp)); } /* |