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Diffstat (limited to 'fs/xfs/linux-2.6')
-rw-r--r--fs/xfs/linux-2.6/xfs_aops.h2
-rw-r--r--fs/xfs/linux-2.6/xfs_buf.c79
-rw-r--r--fs/xfs/linux-2.6/xfs_export.c23
3 files changed, 22 insertions, 82 deletions
diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/linux-2.6/xfs_aops.h
index 7b26f5f..1dd5288 100644
--- a/fs/xfs/linux-2.6/xfs_aops.h
+++ b/fs/xfs/linux-2.6/xfs_aops.h
@@ -21,8 +21,6 @@
extern struct workqueue_struct *xfsdatad_workqueue;
extern mempool_t *xfs_ioend_pool;
-typedef void (*xfs_ioend_func_t)(void *);
-
/*
* xfs_ioend struct manages large extent writes for XFS.
* It can manage several multi-page bio's at once.
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index cb329ed..d71dc44 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -166,75 +166,6 @@ test_page_region(
}
/*
- * Mapping of multi-page buffers into contiguous virtual space
- */
-
-typedef struct a_list {
- void *vm_addr;
- struct a_list *next;
-} a_list_t;
-
-static a_list_t *as_free_head;
-static int as_list_len;
-static DEFINE_SPINLOCK(as_lock);
-
-/*
- * Try to batch vunmaps because they are costly.
- */
-STATIC void
-free_address(
- void *addr)
-{
- a_list_t *aentry;
-
-#ifdef CONFIG_XEN
- /*
- * Xen needs to be able to make sure it can get an exclusive
- * RO mapping of pages it wants to turn into a pagetable. If
- * a newly allocated page is also still being vmap()ed by xfs,
- * it will cause pagetable construction to fail. This is a
- * quick workaround to always eagerly unmap pages so that Xen
- * is happy.
- */
- vunmap(addr);
- return;
-#endif
-
- aentry = kmalloc(sizeof(a_list_t), GFP_NOWAIT);
- if (likely(aentry)) {
- spin_lock(&as_lock);
- aentry->next = as_free_head;
- aentry->vm_addr = addr;
- as_free_head = aentry;
- as_list_len++;
- spin_unlock(&as_lock);
- } else {
- vunmap(addr);
- }
-}
-
-STATIC void
-purge_addresses(void)
-{
- a_list_t *aentry, *old;
-
- if (as_free_head == NULL)
- return;
-
- spin_lock(&as_lock);
- aentry = as_free_head;
- as_free_head = NULL;
- as_list_len = 0;
- spin_unlock(&as_lock);
-
- while ((old = aentry) != NULL) {
- vunmap(aentry->vm_addr);
- aentry = aentry->next;
- kfree(old);
- }
-}
-
-/*
* Internal xfs_buf_t object manipulation
*/
@@ -333,7 +264,7 @@ xfs_buf_free(
uint i;
if ((bp->b_flags & XBF_MAPPED) && (bp->b_page_count > 1))
- free_address(bp->b_addr - bp->b_offset);
+ vm_unmap_ram(bp->b_addr - bp->b_offset, bp->b_page_count);
for (i = 0; i < bp->b_page_count; i++) {
struct page *page = bp->b_pages[i];
@@ -455,10 +386,8 @@ _xfs_buf_map_pages(
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->b_addr = vmap(bp->b_pages, bp->b_page_count,
- VM_MAP, PAGE_KERNEL);
+ bp->b_addr = vm_map_ram(bp->b_pages, bp->b_page_count,
+ -1, PAGE_KERNEL);
if (unlikely(bp->b_addr == NULL))
return -ENOMEM;
bp->b_addr += bp->b_offset;
@@ -1743,8 +1672,6 @@ xfsbufd(
count++;
}
- if (as_list_len > 0)
- purge_addresses();
if (count)
blk_run_address_space(target->bt_mapping);
diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/linux-2.6/xfs_export.c
index 595751f..87b8cbd 100644
--- a/fs/xfs/linux-2.6/xfs_export.c
+++ b/fs/xfs/linux-2.6/xfs_export.c
@@ -126,11 +126,26 @@ xfs_nfs_get_inode(
if (ino == 0)
return ERR_PTR(-ESTALE);
- error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
- if (error)
+ /*
+ * The XFS_IGET_BULKSTAT means that an invalid inode number is just
+ * fine and not an indication of a corrupted filesystem. Because
+ * clients can send any kind of invalid file handle, e.g. after
+ * a restore on the server we have to deal with this case gracefully.
+ */
+ error = xfs_iget(mp, NULL, ino, XFS_IGET_BULKSTAT,
+ XFS_ILOCK_SHARED, &ip, 0);
+ if (error) {
+ /*
+ * EINVAL means the inode cluster doesn't exist anymore.
+ * This implies the filehandle is stale, so we should
+ * translate it here.
+ * We don't use ESTALE directly down the chain to not
+ * confuse applications using bulkstat that expect EINVAL.
+ */
+ if (error == EINVAL)
+ error = ESTALE;
return ERR_PTR(-error);
- if (!ip)
- return ERR_PTR(-EIO);
+ }
if (ip->i_d.di_gen != generation) {
xfs_iput_new(ip, XFS_ILOCK_SHARED);