Return-Path: Received: from int-mailstore01.merit.edu ([207.75.116.232]:44162 "EHLO int-mailstore01.merit.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753331Ab1FGRgD (ORCPT ); Tue, 7 Jun 2011 13:36:03 -0400 Date: Tue, 7 Jun 2011 13:35:59 -0400 From: Jim Rees To: Benny Halevy Cc: linux-nfs@vger.kernel.org, peter honeyman Subject: [PATCH 86/88] SQUASHME: pnfs: blocklayout: port block layout code Message-ID: <8fd0c11c1b29638501ee0942da7475213b4c24aa.1307464382.git.rees@umich.edu> References: Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 From: Peng Tao Make minimal changes to let block layout driver work in current framework. Signed-off-by: Tang Haiying Signed-off-by: Zhang Jingwang Signed-off-by: Peng Tao Signed-off-by: Jim Rees --- drivers/md/dm-ioctl.c | 24 -------- drivers/scsi/hosts.c | 3 +- fs/nfs/blocklayout/blocklayout.c | 105 ++++++++++------------------------ fs/nfs/blocklayout/blocklayout.h | 9 +-- fs/nfs/blocklayout/blocklayoutdev.c | 34 ++++++++---- fs/nfs/blocklayout/extents.c | 14 +---- fs/nfs/nfs4proc.c | 1 - fs/nfs/nfs4xdr.c | 3 +- fs/nfs/pnfs.c | 8 ++- fs/nfs/pnfs.h | 1 + include/linux/nfs_fs_sb.h | 1 + 11 files changed, 69 insertions(+), 134 deletions(-) diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index d0d417e..4cacdad 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -713,12 +713,6 @@ static int dev_create(struct dm_ioctl *param, size_t param_size) return 0; } -int dm_dev_create(struct dm_ioctl *param) -{ - return dev_create(param, sizeof(*param)); -} -EXPORT_SYMBOL(dm_dev_create); - /* * Always use UUID for lookups if it's present, otherwise use name or dev. */ @@ -814,12 +808,6 @@ static int dev_remove(struct dm_ioctl *param, size_t param_size) return 0; } -int dm_dev_remove(struct dm_ioctl *param) -{ - return dev_remove(param, sizeof(*param)); -} -EXPORT_SYMBOL(dm_dev_remove); - /* * Check a string doesn't overrun the chunk of * memory we copied from userland. @@ -1002,12 +990,6 @@ static int do_resume(struct dm_ioctl *param) return r; } -int dm_do_resume(struct dm_ioctl *param) -{ - return do_resume(param); -} -EXPORT_SYMBOL(dm_do_resume); - /* * Set or unset the suspension state of a device. * If the device already is in the requested state we just return its status. @@ -1274,12 +1256,6 @@ out: return r; } -int dm_table_load(struct dm_ioctl *param, size_t param_size) -{ - return table_load(param, param_size); -} -EXPORT_SYMBOL(dm_table_load); - static int table_clear(struct dm_ioctl *param, size_t param_size) { struct hash_cell *hc; diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 7d91903..4f7a582 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -50,11 +50,10 @@ static void scsi_host_cls_release(struct device *dev) put_device(&class_to_shost(dev)->shost_gendev); } -struct class shost_class = { +static struct class shost_class = { .name = "scsi_host", .dev_release = scsi_host_cls_release, }; -EXPORT_SYMBOL(shost_class); /** * scsi_host_set_state - Take the given host through the host state model. diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 2583b87..d842ec8 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -97,14 +97,6 @@ dont_like_caller(struct nfs_page *req) } } -static enum pnfs_try_status -bl_commit(struct nfs_write_data *nfs_data, - int sync) -{ - dprintk("%s enter\n", __func__); - return PNFS_NOT_ATTEMPTED; -} - /* The data we are handed might be spread across several bios. We need * to track when the last one is finished. */ @@ -198,7 +190,7 @@ static void bl_read_cleanup(struct work_struct *work) dprintk("%s enter\n", __func__); task = container_of(work, struct rpc_task, u.tk_work); rdata = container_of(task, struct nfs_read_data, task); - pnfs_read_done(rdata); + pnfs_ld_read_done(rdata); } static void @@ -219,8 +211,7 @@ static void bl_rpc_do_nothing(struct rpc_task *task, void *calldata) } static enum pnfs_try_status -bl_read_pagelist(struct nfs_read_data *rdata, - unsigned nr_pages) +bl_read_pagelist(struct nfs_read_data *rdata) { int i, hole; struct bio *bio = NULL; @@ -233,13 +224,13 @@ bl_read_pagelist(struct nfs_read_data *rdata, int pg_index = rdata->args.pgbase >> PAGE_CACHE_SHIFT; dprintk("%s enter nr_pages %u offset %lld count %Zd\n", __func__, - nr_pages, f_offset, count); + rdata->npages, f_offset, count); if (dont_like_caller(rdata->req)) { dprintk("%s dont_like_caller failed\n", __func__); goto use_mds; } - if ((nr_pages == 1) && PagePnfsErr(rdata->req->wb_page)) { + if ((rdata->npages == 1) && PagePnfsErr(rdata->req->wb_page)) { /* We want to fall back to mds in case of read_page * after error on read_pages. */ @@ -249,21 +240,21 @@ bl_read_pagelist(struct nfs_read_data *rdata, par = alloc_parallel(rdata); if (!par) goto use_mds; - par->call_ops = *rdata->pdata.call_ops; + par->call_ops = *rdata->mds_ops; par->call_ops.rpc_call_done = bl_rpc_do_nothing; par->pnfs_callback = bl_end_par_io_read; /* At this point, we can no longer jump to use_mds */ isect = (sector_t) (f_offset >> 9); /* Code assumes extents are page-aligned */ - for (i = pg_index; i < nr_pages; i++) { + for (i = pg_index; i < rdata->npages; i++) { if (!extent_length) { /* We've used up the previous extent */ put_extent(be); put_extent(cow_read); bio = bl_submit_bio(READ, bio); /* Get the next one */ - be = find_get_extent(BLK_LSEG2EXT(rdata->pdata.lseg), + be = find_get_extent(BLK_LSEG2EXT(rdata->lseg), isect, &cow_read); if (!be) { /* Error out this page */ @@ -293,7 +284,7 @@ bl_read_pagelist(struct nfs_read_data *rdata, be_read = (hole && cow_read) ? cow_read : be; for (;;) { if (!bio) { - bio = bio_alloc(GFP_NOIO, nr_pages - i); + bio = bio_alloc(GFP_NOIO, rdata->npages - i); if (!bio) { /* Error out this page */ bl_done_with_rpage(pages[i], 0); @@ -407,10 +398,10 @@ static void bl_write_cleanup(struct work_struct *work) /* BUG - this should be called after each bio, not after * all finish, unless have some way of storing success/failure */ - mark_extents_written(BLK_LSEG2EXT(wdata->pdata.lseg), + mark_extents_written(BLK_LSEG2EXT(wdata->lseg), wdata->args.offset, wdata->args.count); } - pnfs_writeback_done(wdata); + pnfs_ld_write_done(wdata); } /* Called when last of bios associated with a bl_write_pagelist call finishes */ @@ -428,7 +419,6 @@ bl_end_par_io_write(void *data) static enum pnfs_try_status bl_write_pagelist(struct nfs_write_data *wdata, - unsigned nr_pages, int sync) { int i; @@ -442,7 +432,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, int pg_index = wdata->args.pgbase >> PAGE_CACHE_SHIFT; dprintk("%s enter, %Zu@%lld\n", __func__, count, offset); - if (!wdata->req->wb_lseg) { + if (!wdata->lseg) { dprintk("%s no lseg, falling back to MDS\n", __func__); return PNFS_NOT_ATTEMPTED; } @@ -460,19 +450,19 @@ bl_write_pagelist(struct nfs_write_data *wdata, par = alloc_parallel(wdata); if (!par) return PNFS_NOT_ATTEMPTED; - par->call_ops = *wdata->pdata.call_ops; + par->call_ops = *wdata->mds_ops; par->call_ops.rpc_call_done = bl_rpc_do_nothing; par->pnfs_callback = bl_end_par_io_write; /* At this point, have to be more careful with error handling */ isect = (sector_t) ((offset & (long)PAGE_CACHE_MASK) >> 9); - for (i = pg_index; i < nr_pages; i++) { + for (i = pg_index; i < wdata->npages ; i++) { if (!extent_length) { /* We've used up the previous extent */ put_extent(be); bio = bl_submit_bio(WRITE, bio); /* Get the next one */ - be = find_get_extent(BLK_LSEG2EXT(wdata->pdata.lseg), + be = find_get_extent(BLK_LSEG2EXT(wdata->lseg), isect, NULL); if (!be || !is_writable(be, isect)) { /* FIXME */ @@ -484,7 +474,7 @@ bl_write_pagelist(struct nfs_write_data *wdata, } for (;;) { if (!bio) { - bio = bio_alloc(GFP_NOIO, nr_pages - i); + bio = bio_alloc(GFP_NOIO, wdata->npages - i); if (!bio) { /* Error out this page */ /* FIXME */ @@ -504,7 +494,12 @@ bl_write_pagelist(struct nfs_write_data *wdata, isect += PAGE_CACHE_SIZE >> 9; extent_length -= PAGE_CACHE_SIZE >> 9; } - wdata->res.count = (isect << 9) - (offset & (long)PAGE_CACHE_MASK); + wdata->res.count = (isect << 9) - (offset); + if (count < wdata->res.count) { + wdata->res.count = count; + } + /* pnfs_set_layoutcommit needs this */ + wdata->mds_offset = offset; put_extent(be); bl_submit_bio(WRITE, bio); put_parallel(par); @@ -557,18 +552,19 @@ bl_free_layout_hdr(struct pnfs_layout_hdr *lo) } static struct pnfs_layout_hdr * -bl_alloc_layout_hdr(struct inode *inode) +bl_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) { struct pnfs_block_layout *bl; dprintk("%s enter\n", __func__); - bl = kzalloc(sizeof(*bl), GFP_KERNEL); + bl = kzalloc(sizeof(*bl), gfp_flags); if (!bl) return NULL; spin_lock_init(&bl->bl_ext_lock); INIT_LIST_HEAD(&bl->bl_extents[0]); INIT_LIST_HEAD(&bl->bl_extents[1]); INIT_LIST_HEAD(&bl->bl_commit); + INIT_LIST_HEAD(&bl->bl_committing); bl->bl_count = 0; bl->bl_blocksize = NFS_SERVER(inode)->pnfs_blksize >> 9; INIT_INVAL_MARKS(&bl->bl_inval, bl->bl_blocksize); @@ -590,16 +586,16 @@ bl_free_lseg(struct pnfs_layout_segment *lseg) */ static struct pnfs_layout_segment * bl_alloc_lseg(struct pnfs_layout_hdr *lo, - struct nfs4_layoutget_res *lgr) + struct nfs4_layoutget_res *lgr, gfp_t gfp_flags) { struct pnfs_layout_segment *lseg; int status; dprintk("%s enter\n", __func__); - lseg = kzalloc(sizeof(*lseg) + 0, GFP_KERNEL); + lseg = kzalloc(sizeof(*lseg) + 0, gfp_flags); if (!lseg) return NULL; - status = nfs4_blk_process_layoutget(lo, lgr); + status = nfs4_blk_process_layoutget(lo, lgr, gfp_flags); if (status) { /* We don't want to call the full-blown bl_free_lseg, * since on error extents were not touched. @@ -615,34 +611,6 @@ bl_alloc_lseg(struct pnfs_layout_hdr *lo, return lseg; } -static int -bl_setup_layoutcommit(struct pnfs_layout_hdr *lo, - struct nfs4_layoutcommit_args *arg) -{ - struct nfs_server *nfss = NFS_SERVER(lo->plh_inode); - struct bl_layoutupdate_data *layoutupdate_data; - - dprintk("%s enter\n", __func__); - /* Need to ensure commit is block-size aligned */ - if (nfss->pnfs_blksize) { - u64 mask = nfss->pnfs_blksize - 1; - u64 offset = arg->range.offset & mask; - - arg->range.offset -= offset; - arg->range.length += offset + mask; - arg->range.length &= ~mask; - } - - layoutupdate_data = kmalloc(sizeof(struct bl_layoutupdate_data), - GFP_KERNEL); - if (unlikely(!layoutupdate_data)) - return -ENOMEM; - INIT_LIST_HEAD(&layoutupdate_data->ranges); - arg->layoutdriver_data = layoutupdate_data; - - return 0; -} - static void bl_encode_layoutcommit(struct pnfs_layout_hdr *lo, struct xdr_stream *xdr, const struct nfs4_layoutcommit_args *arg) @@ -657,7 +625,6 @@ bl_cleanup_layoutcommit(struct pnfs_layout_hdr *lo, { dprintk("%s enter\n", __func__); clean_pnfs_block_layoutupdate(BLK_LO2EXT(lo), &lcdata->args, lcdata->res.status); - kfree(lcdata->args.layoutdriver_data); } static void free_blk_mountid(struct block_mount_id *mid) @@ -1085,25 +1052,16 @@ bl_write_end_cleanup(struct file *filp, struct pnfs_fsdata *fsdata) fsdata->private = NULL; } -/* This is called by nfs_can_coalesce_requests via nfs_pageio_do_add_request. - * Should return False if there is a reason requests can not be coalesced, - * otherwise, should default to returning True. - */ -static int +static bool bl_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, - struct nfs_page *req) + struct nfs_page *req) { - dprintk("%s enter\n", __func__); - if (pgio->pg_iswrite) - return prev->wb_lseg == req->wb_lseg; - else - return 1; + return pnfs_generic_pg_test(pgio, prev, req); } static struct pnfs_layoutdriver_type blocklayout_type = { .id = LAYOUT_BLOCK_VOLUME, .name = "LAYOUT_BLOCK_VOLUME", - .commit = bl_commit, .read_pagelist = bl_read_pagelist, .write_pagelist = bl_write_pagelist, .write_begin = bl_write_begin, @@ -1113,12 +1071,11 @@ static struct pnfs_layoutdriver_type blocklayout_type = { .free_layout_hdr = bl_free_layout_hdr, .alloc_lseg = bl_alloc_lseg, .free_lseg = bl_free_lseg, - .setup_layoutcommit = bl_setup_layoutcommit, .encode_layoutcommit = bl_encode_layoutcommit, .cleanup_layoutcommit = bl_cleanup_layoutcommit, .set_layoutdriver = bl_set_layoutdriver, .clear_layoutdriver = bl_clear_layoutdriver, - .pg_test = bl_pg_test, + .pg_test = bl_pg_test, }; static int __init nfs4blocklayout_init(void) diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h index a8198ae..dd596d4 100644 --- a/fs/nfs/blocklayout/blocklayout.h +++ b/fs/nfs/blocklayout/blocklayout.h @@ -33,7 +33,6 @@ #define FS_NFS_NFS4BLOCKLAYOUT_H #include -#include /* Needed for struct dm_ioctl*/ #include "../pnfs.h" #define PAGE_CACHE_SECTORS (PAGE_CACHE_SIZE >> 9) @@ -43,11 +42,6 @@ #define SetPagePnfsErr(page) set_bit(PG_pnfserr, &(page)->flags) #define ClearPagePnfsErr(page) clear_bit(PG_pnfserr, &(page)->flags) -extern int dm_dev_create(struct dm_ioctl *param); /* from dm-ioctl.c */ -extern int dm_dev_remove(struct dm_ioctl *param); /* from dm-ioctl.c */ -extern int dm_do_resume(struct dm_ioctl *param); -extern int dm_table_load(struct dm_ioctl *param, size_t param_size); - struct block_mount_id { spinlock_t bm_lock; /* protects list */ struct list_head bm_devlist; /* holds pnfs_block_dev */ @@ -180,6 +174,7 @@ struct pnfs_block_layout { spinlock_t bl_ext_lock; /* Protects list manipulation */ struct list_head bl_extents[EXTENT_LISTS]; /* R and RW extents */ struct list_head bl_commit; /* Needs layout commit */ + struct list_head bl_committing; /* Layout committing */ unsigned int bl_count; /* entries in bl_commit */ sector_t bl_blocksize; /* Server blocksize in sectors */ }; @@ -257,7 +252,7 @@ struct pnfs_block_dev *nfs4_blk_decode_device(struct nfs_server *server, struct pnfs_device *dev, struct list_head *sdlist); int nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, - struct nfs4_layoutget_res *lgr); + struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); int nfs4_blk_create_block_disk_list(struct list_head *); void nfs4_blk_destroy_disk_list(struct list_head *); /* blocklayoutdm.c */ diff --git a/fs/nfs/blocklayout/blocklayoutdev.c b/fs/nfs/blocklayout/blocklayoutdev.c index 23469e3..a90eb6b 100644 --- a/fs/nfs/blocklayout/blocklayoutdev.c +++ b/fs/nfs/blocklayout/blocklayoutdev.c @@ -231,14 +231,16 @@ static int verify_extent(struct pnfs_block_extent *be, /* XDR decode pnfs_block_layout4 structure */ int nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, - struct nfs4_layoutget_res *lgr) + struct nfs4_layoutget_res *lgr, gfp_t gfp_flags) { struct pnfs_block_layout *bl = BLK_LO2EXT(lo); - uint32_t *p = (uint32_t *)lgr->layout.buf; - uint32_t *end = (uint32_t *)((char *)lgr->layout.buf + lgr->layout.len); int i, status = -EIO; uint32_t count; struct pnfs_block_extent *be = NULL, *save; + struct xdr_stream stream; + struct xdr_buf buf; + struct page *scratch; + __be32 *p; uint64_t tmp; /* Used by READSECTOR */ struct layout_verification lv = { .mode = lgr->range.iomode, @@ -246,14 +248,27 @@ nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, .inval = lgr->range.offset >> 9, .cowread = lgr->range.offset >> 9, }; - LIST_HEAD(extents); - BLK_READBUF(p, end, 4); + dprintk("---> %s\n", __func__); + + scratch = alloc_page(gfp_flags); + if (!scratch) + return -ENOMEM; + + xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages, lgr->layoutp->len); + xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE); + + p = xdr_inline_decode(&stream, 4); + if (unlikely(!p)) + goto out_err; + READ32(count); dprintk("%s enter, number of extents %i\n", __func__, count); - BLK_READBUF(p, end, (28 + NFS4_DEVICEID4_SIZE) * count); + p = xdr_inline_decode(&stream, (28 + NFS4_DEVICEID4_SIZE) * count); + if (unlikely(!p)) + goto out_err; /* Decode individual extents, putting them in temporary * staging area until whole layout is decoded to make error @@ -269,6 +284,7 @@ nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, be->be_mdev = translate_devid(lo, &be->be_devid); if (!be->be_mdev) goto out_err; + /* The next three values are read in as bytes, * but stored as 512-byte sector lengths */ @@ -284,11 +300,6 @@ nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, } list_add_tail(&be->be_node, &extents); } - if (p != end) { - dprintk("%s Undecoded cruft at end of opaque\n", __func__); - be = NULL; - goto out_err; - } if (lgr->range.offset + lgr->range.length != lv.start << 9) { dprintk("%s Final length mismatch\n", __func__); be = NULL; @@ -319,6 +330,7 @@ nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, spin_unlock(&bl->bl_ext_lock); status = 0; out: + __free_page(scratch); dprintk("%s returns %i\n", __func__, status); return status; diff --git a/fs/nfs/blocklayout/extents.c b/fs/nfs/blocklayout/extents.c index 40dff82..08413ec 100644 --- a/fs/nfs/blocklayout/extents.c +++ b/fs/nfs/blocklayout/extents.c @@ -232,7 +232,7 @@ _range_has_tag(struct my_tree_t *tree, u64 start, u64 end, int32_t tag) if ((pos->it_sector == end - tree->mtt_step_size) && (pos->it_tags & (1 << tag))) { expect = pos->it_sector - tree->mtt_step_size; - if (expect < start) + if (pos->it_sector < tree->mtt_step_size || expect < start) return 1; continue; } else { @@ -740,19 +740,12 @@ encode_pnfs_block_layoutupdate(struct pnfs_block_layout *bl, struct xdr_stream *xdr, const struct nfs4_layoutcommit_args *arg) { - sector_t start, end; struct pnfs_block_short_extent *lce, *save; unsigned int count = 0; - struct bl_layoutupdate_data *bld = arg->layoutdriver_data; - struct list_head *ranges = &bld->ranges; + struct list_head *ranges = &bl->bl_committing; __be32 *p, *xdr_start; dprintk("%s enter\n", __func__); - start = arg->range.offset >> 9; - end = start + (arg->range.length >> 9); - dprintk("%s set start=%llu, end=%llu\n", - __func__, (u64)start, (u64)end); - /* BUG - creation of bl_commit is buggy - need to wait for * entire block to be marked WRITTEN before it can be added. */ @@ -925,11 +918,10 @@ clean_pnfs_block_layoutupdate(struct pnfs_block_layout *bl, const struct nfs4_layoutcommit_args *arg, int status) { - struct bl_layoutupdate_data *bld = arg->layoutdriver_data; struct pnfs_block_short_extent *lce, *save; dprintk("%s status %d\n", __func__, status); - list_for_each_entry_safe_reverse(lce, save, &bld->ranges, bse_node) { + list_for_each_entry_safe_reverse(lce, save, &bl->bl_committing, bse_node) { if (likely(!status)) { u64 offset = lce->bse_f_offset; u64 end = offset + lce->bse_length; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index a693283..987260c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5788,7 +5788,6 @@ static int _nfs4_getdevicelist(struct nfs_server *server, dprintk("--> %s\n", __func__); status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); - put_rpccred(msg.rpc_cred); dprintk("<-- %s status=%d\n", __func__, status); return status; } diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index e059dc8..73f18f4 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1963,7 +1963,7 @@ encode_layoutcommit(struct xdr_stream *xdr, *p++ = cpu_to_be32(OP_LAYOUTCOMMIT); /* Only whole file layouts */ p = xdr_encode_hyper(p, 0); /* offset */ - p = xdr_encode_hyper(p, NFS4_MAX_UINT64); /* length */ + p = xdr_encode_hyper(p, args->lastbytewritten+1); /* length */ *p++ = cpu_to_be32(0); /* reclaim */ p = xdr_encode_opaque_fixed(p, args->stateid.data, NFS4_STATEID_SIZE); *p++ = cpu_to_be32(1); /* newoffset = TRUE */ @@ -5467,7 +5467,6 @@ static int decode_layoutcommit(struct xdr_stream *xdr, int status; status = decode_op_hdr(xdr, OP_LAYOUTCOMMIT); - res->status = status; if (status) return status; diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index c88a8ee..9920bff 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -898,8 +898,6 @@ pnfs_find_lseg(struct pnfs_layout_hdr *lo, ret = get_lseg(lseg); break; } - if (cmp_layout(range, &lseg->pls_range) > 0) - break; } dprintk("%s:Return lseg %p ref %d\n", @@ -1252,6 +1250,7 @@ static struct pnfs_layout_segment *pnfs_list_write_lseg(struct inode *inode) } } rv->pls_end_pos = max_pos; + dprintk("%s: lseg %p end_pos %llu\n", __func__, rv, rv->pls_end_pos); return rv; } @@ -1261,6 +1260,7 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata) { struct nfs_inode *nfsi = NFS_I(wdata->inode); loff_t end_pos = wdata->mds_offset + wdata->res.count; + loff_t isize = i_size_read(wdata->inode); bool mark_as_dirty = false; spin_lock(&nfsi->vfs_inode.i_lock); @@ -1274,9 +1274,13 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata) dprintk("%s: Set layoutcommit for inode %lu ", __func__, wdata->inode->i_ino); } + if (end_pos > isize) + end_pos = isize; if (end_pos > wdata->lseg->pls_end_pos) wdata->lseg->pls_end_pos = end_pos; spin_unlock(&nfsi->vfs_inode.i_lock); + dprintk("%s: lseg %p end_pos %llu\n", + __func__, wdata->lseg, wdata->lseg->pls_end_pos); /* if pnfs_layoutcommit_inode() runs between inode locks, the next one * will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */ diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index b50cf3a..28d57c9 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -156,6 +156,7 @@ struct pnfs_device { unsigned int layout_type; unsigned int mincount; struct page **pages; + void *area; unsigned int pgbase; unsigned int pglen; }; diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 3d93ada..79cc4ca 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -143,6 +143,7 @@ struct nfs_server { filesystem */ struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ struct rpc_wait_queue roc_rpcwaitq; + void *pnfs_ld_data; /* per mount point data */ u32 pnfs_blksize; /* layout_blksize attr */ /* the following fields are protected by nfs_client->cl_lock */ -- 1.7.4.1