diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/exofs/Kconfig | 2 | ||||
| -rw-r--r-- | fs/nfs/objlayout/objio_osd.c | 133 |
2 files changed, 60 insertions, 75 deletions
diff --git a/fs/exofs/Kconfig b/fs/exofs/Kconfig index fa9a286..da42f32 100644 --- a/fs/exofs/Kconfig +++ b/fs/exofs/Kconfig @@ -5,7 +5,7 @@ # selected by any of the users. config ORE tristate - depends on EXOFS_FS + depends on EXOFS_FS || PNFS_OBJLAYOUT select ASYNC_XOR default SCSI_OSD_ULD diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index bd7ec26..00b3849 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -44,12 +44,6 @@ #define NFSDBG_FACILITY NFSDBG_PNFS_LD -#define _LLU(x) ((unsigned long long)x) - -enum { BIO_MAX_PAGES_KMALLOC = - (PAGE_SIZE - sizeof(struct bio)) / sizeof(struct bio_vec), -}; - struct objio_dev_ent { struct nfs4_deviceid_node id_node; struct ore_dev od; @@ -124,37 +118,13 @@ OBJIO_LSEG(struct pnfs_layout_segment *lseg) return container_of(lseg, struct objio_segment, lseg); } -struct objio_state; -typedef int (*objio_done_fn)(struct objio_state *ios); - struct objio_state { /* Generic layer */ struct objlayout_io_res oir; - struct page **pages; - unsigned pgbase; - unsigned nr_pages; - unsigned long count; - loff_t offset; bool sync; - - struct ore_layout *layout; - struct ore_components *oc; - - struct kref kref; - objio_done_fn done; - void *private; - - unsigned long length; - unsigned numdevs; /* Actually used devs in this IO */ - /* A per-device variable array of size numdevs */ - struct _objio_per_comp { - struct bio *bio; - struct osd_request *or; - unsigned long length; - u64 offset; - unsigned dev; - } per_dev[]; + /*FIXME: Support for extra_bytes at ore_get_rw_state() */ + struct ore_io_state *ios; }; /* Send and wait for a get_device_info of devices in the layout, @@ -374,16 +344,16 @@ void objio_free_lseg(struct pnfs_layout_segment *lseg) } static int -objio_alloc_io_state(struct pnfs_layout_hdr *pnfs_layout_type, +objio_alloc_io_state(struct pnfs_layout_hdr *pnfs_layout_type, bool is_reading, struct pnfs_layout_segment *lseg, struct page **pages, unsigned pgbase, loff_t offset, size_t count, void *rpcdata, gfp_t gfp_flags, struct objio_state **outp) { struct objio_segment *objio_seg = OBJIO_LSEG(lseg); - struct objio_state *ios; + struct ore_io_state *ios; + int ret; struct __alloc_objio_state { struct objio_state objios; - struct _objio_per_comp per_dev[objio_seg->oc.numdevs]; struct pnfs_osd_ioerr ioerrs[objio_seg->oc.numdevs]; } *aos; @@ -391,30 +361,33 @@ objio_alloc_io_state(struct pnfs_layout_hdr *pnfs_layout_type, if (unlikely(!aos)) return -ENOMEM; - ios = &aos->objios; - - ios->layout = &objio_seg->layout; - ios->oc = &objio_seg->oc; objlayout_init_ioerrs(&aos->objios.oir, objio_seg->oc.numdevs, aos->ioerrs, rpcdata, pnfs_layout_type); + ret = ore_get_rw_state(&objio_seg->layout, &objio_seg->oc, is_reading, + offset, count, &ios); + if (unlikely(ret)) { + kfree(aos); + return ret; + } + ios->pages = pages; ios->pgbase = pgbase; - ios->nr_pages = (pgbase + count + PAGE_SIZE - 1) >> PAGE_SHIFT; - ios->offset = offset; - ios->count = count; - ios->sync = 0; + ios->private = aos; BUG_ON(ios->nr_pages > (pgbase + count + PAGE_SIZE - 1) >> PAGE_SHIFT); - *outp = ios; + aos->objios.sync = 0; + aos->objios.ios = ios; + *outp = &aos->objios; return 0; } void objio_free_result(struct objlayout_io_res *oir) { - struct objio_state *ios = container_of(oir, struct objio_state, oir); + struct objio_state *objios = container_of(oir, struct objio_state, oir); - kfree(ios); + ore_put_io_state(objios->ios); + kfree(objios); } enum pnfs_osd_errno osd_pri_2_pnfs_err(enum osd_err_priority oep) @@ -447,7 +420,7 @@ enum pnfs_osd_errno osd_pri_2_pnfs_err(enum osd_err_priority oep) } } -static void __on_dev_error(struct objio_state *ios, bool is_write, +static void __on_dev_error(struct ore_io_state *ios, struct ore_dev *od, unsigned dev_index, enum osd_err_priority oep, u64 dev_offset, u64 dev_len) { @@ -465,9 +438,10 @@ static void __on_dev_error(struct objio_state *ios, bool is_write, objlayout_io_set_result(&objios->oir, comp, &pooid, osd_pri_2_pnfs_err(oep), - dev_offset, dev_len, is_write); + dev_offset, dev_len, !ios->reading); } +#if 0 static void _clear_bio(struct bio *bio) { struct bio_vec *bv; @@ -786,26 +760,28 @@ static int _io_exec(struct objio_state *ios) return ret; } +#endif /* * read */ -static int _read_done(struct objio_state *ios) +static void _read_done(struct ore_io_state *ios, void *private) { + struct objio_state *objios = private; ssize_t status; - int ret = _io_check(ios, false); + int ret = ore_check_io(ios, &__on_dev_error); - _io_free(ios); + /* FIXME: _io_free(ios) can we dealocate the libosd resources; */ if (likely(!ret)) status = ios->length; else status = ret; - objlayout_read_done(&ios->oir, status, ios->sync); - return ret; + objlayout_read_done(&objios->oir, status, objios->sync); } +#if 0 static int _read_mirrors(struct objio_state *ios, unsigned cur_comp) { struct osd_request *or = NULL; @@ -860,49 +836,50 @@ err: _io_free(ios); return ret; } +#endif int objio_read_pagelist(struct nfs_read_data *rdata) { - struct objio_state *ios; + struct objio_state *objios; int ret; - ret = objio_alloc_io_state(NFS_I(rdata->inode)->layout, + ret = objio_alloc_io_state(NFS_I(rdata->inode)->layout, true, rdata->lseg, rdata->args.pages, rdata->args.pgbase, rdata->args.offset, rdata->args.count, rdata, - GFP_KERNEL, &ios); - if (unlikely(ret)) - return ret; - - ret = _io_rw_pagelist(ios, GFP_KERNEL); + GFP_KERNEL, &objios); if (unlikely(ret)) return ret; - return _read_exec(ios); + objios->ios->done = _read_done; + dprintk("%s: offset=0x%llx length=0x%x\n", __func__, + rdata->args.offset, rdata->args.count); + return ore_read(objios->ios); } /* * write */ -static int _write_done(struct objio_state *ios) +static void _write_done(struct ore_io_state *ios, void *private) { + struct objio_state *objios = private; ssize_t status; - int ret = _io_check(ios, true); + int ret = ore_check_io(ios, &__on_dev_error); - _io_free(ios); + /* FIXME: _io_free(ios) can we dealocate the libosd resources; */ if (likely(!ret)) { /* FIXME: should be based on the OSD's persistence model * See OSD2r05 Section 4.13 Data persistence model */ - ios->oir.committed = NFS_FILE_SYNC; + objios->oir.committed = NFS_FILE_SYNC; status = ios->length; } else { status = ret; } - objlayout_write_done(&ios->oir, status, ios->sync); - return ret; + objlayout_write_done(&objios->oir, status, objios->sync); } +#if 0 static int _write_mirrors(struct objio_state *ios, unsigned cur_comp) { struct _objio_per_comp *master_dev = &ios->per_dev[cur_comp]; @@ -984,27 +961,35 @@ err: _io_free(ios); return ret; } +#endif int objio_write_pagelist(struct nfs_write_data *wdata, int how) { - struct objio_state *ios; + struct objio_state *objios; int ret; - ret = objio_alloc_io_state(NFS_I(wdata->inode)->layout, + ret = objio_alloc_io_state(NFS_I(wdata->inode)->layout, false, wdata->lseg, wdata->args.pages, wdata->args.pgbase, wdata->args.offset, wdata->args.count, wdata, GFP_NOFS, - &ios); + &objios); if (unlikely(ret)) return ret; - ios->sync = 0 != (how & FLUSH_SYNC); + objios->sync = 0 != (how & FLUSH_SYNC); - /* TODO: ios->stable = stable; */ - ret = _io_rw_pagelist(ios, GFP_NOFS); + if (!objios->sync) + objios->ios->done = _write_done; + + dprintk("%s: offset=0x%llx length=0x%x\n", __func__, + wdata->args.offset, wdata->args.count); + ret = ore_write(objios->ios); if (unlikely(ret)) return ret; - return _write_exec(ios); + if (objios->sync) + _write_done(objios->ios, objios); + + return 0; } static bool objio_pg_test(struct nfs_pageio_descriptor *pgio, |