diff options
| -rw-r--r-- | fs/nfs/inode.c | 2 | ||||
| -rw-r--r-- | fs/nfs/internal.h | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 109 | ||||
| -rw-r--r-- | fs/nfs/nfs4filelayout.h | 7 | ||||
| -rw-r--r-- | fs/nfs/pagelist.c | 61 | ||||
| -rw-r--r-- | fs/nfs/pnfs.h | 82 | ||||
| -rw-r--r-- | fs/nfs/write.c | 120 | ||||
| -rw-r--r-- | include/linux/nfs_fs.h | 6 | ||||
| -rw-r--r-- | include/linux/nfs_page.h | 13 |
9 files changed, 208 insertions, 194 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 70e25c9..1a19f8d 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1560,7 +1560,7 @@ static void init_once(void *foo) INIT_LIST_HEAD(&nfsi->open_files); INIT_LIST_HEAD(&nfsi->access_cache_entry_lru); INIT_LIST_HEAD(&nfsi->access_cache_inode_lru); - INIT_RADIX_TREE(&nfsi->nfs_page_tree, GFP_ATOMIC); + INIT_LIST_HEAD(&nfsi->commit_list); nfsi->npages = 0; nfsi->ncommit = 0; atomic_set(&nfsi->silly_count, 1); diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 0c3648a..04a9147 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -308,6 +308,8 @@ extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio); extern void nfs_readdata_release(struct nfs_read_data *rdata); /* write.c */ +extern int nfs_scan_commit_list(struct list_head *src, struct list_head *dst, + int max); extern int nfs_generic_flush(struct nfs_pageio_descriptor *desc, struct list_head *head); extern void nfs_pageio_init_write_mds(struct nfs_pageio_descriptor *pgio, diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 768f6f8..716fac6 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -682,14 +682,16 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid, int size = (fl->stripe_type == STRIPE_SPARSE) ? fl->dsaddr->ds_num : fl->dsaddr->stripe_count; - fl->commit_buckets = kcalloc(size, sizeof(struct list_head), gfp_flags); + fl->commit_buckets = kcalloc(size, sizeof(struct nfs4_fl_commit_bucket), gfp_flags); if (!fl->commit_buckets) { filelayout_free_lseg(&fl->generic_hdr); return NULL; } fl->number_of_buckets = size; - for (i = 0; i < size; i++) - INIT_LIST_HEAD(&fl->commit_buckets[i]); + for (i = 0; i < size; i++) { + INIT_LIST_HEAD(&fl->commit_buckets[i].written); + INIT_LIST_HEAD(&fl->commit_buckets[i].committing); + } } return &fl->generic_hdr; } @@ -767,11 +769,6 @@ static const struct nfs_pageio_ops filelayout_pg_write_ops = { .pg_doio = pnfs_generic_pg_writepages, }; -static bool filelayout_mark_pnfs_commit(struct pnfs_layout_segment *lseg) -{ - return !FILELAYOUT_LSEG(lseg)->commit_through_mds; -} - static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j) { if (fl->stripe_type == STRIPE_SPARSE) @@ -780,13 +777,39 @@ static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j) return j; } -struct list_head *filelayout_choose_commit_list(struct nfs_page *req) +/* The generic layer is about to remove the req from the commit list. + * If this will make the bucket empty, it will need to put the lseg reference. + * Note inode lock is held, so we can't do the put here. + */ +static struct pnfs_layout_segment * +filelayout_remove_commit_req(struct nfs_page *req) +{ + if (list_is_singular(&req->wb_list)) { + struct inode *inode = req->wb_context->dentry->d_inode; + struct pnfs_layout_segment *lseg; + + /* From here we can find the bucket, but for the moment, + * since there is only one relevant lseg... + */ + list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) { + if (lseg->pls_range.iomode == IOMODE_RW) + return lseg; + } + } + return NULL; +} + +static struct list_head * +filelayout_choose_commit_list(struct nfs_page *req, + struct pnfs_layout_segment *lseg) { - struct pnfs_layout_segment *lseg = req->wb_commit_lseg; struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg); u32 i, j; struct list_head *list; + if (fl->commit_through_mds) + return &NFS_I(req->wb_context->dentry->d_inode)->commit_list; + /* Note that we are calling nfs4_fl_calc_j_index on each page * that ends up being committed to a data server. An attractive * alternative is to add a field to nfs_write_data and nfs_page @@ -796,9 +819,14 @@ struct list_head *filelayout_choose_commit_list(struct nfs_page *req) j = nfs4_fl_calc_j_index(lseg, (loff_t)req->wb_index << PAGE_CACHE_SHIFT); i = select_bucket_index(fl, j); - list = &fl->commit_buckets[i]; + list = &fl->commit_buckets[i].written; if (list_empty(list)) { - /* Non-empty buckets hold a reference on the lseg */ + /* Non-empty buckets hold a reference on the lseg. That ref + * is normally transferred to the COMMIT call and released + * there. It could also be released if the last req is pulled + * off due to a rewrite, in which case it will be done in + * filelayout_remove_commit_req + */ get_lseg(lseg); } return list; @@ -860,18 +888,56 @@ static int filelayout_initiate_commit(struct nfs_write_data *data, int how) /* * This is only useful while we are using whole file layouts. */ -static struct pnfs_layout_segment *find_only_write_lseg(struct inode *inode) +static struct pnfs_layout_segment * +find_only_write_lseg_locked(struct inode *inode) { - struct pnfs_layout_segment *lseg, *rv = NULL; + struct pnfs_layout_segment *lseg; - spin_lock(&inode->i_lock); list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) if (lseg->pls_range.iomode == IOMODE_RW) - rv = get_lseg(lseg); + return get_lseg(lseg); + return NULL; +} + +static struct pnfs_layout_segment *find_only_write_lseg(struct inode *inode) +{ + struct pnfs_layout_segment *rv; + + spin_lock(&inode->i_lock); + rv = find_only_write_lseg_locked(inode); spin_unlock(&inode->i_lock); return rv; } +/* Move reqs from written to committing lists, returning count of number moved. + * Note called with i_lock held. + */ +static int filelayout_scan_commit_lists(struct inode *inode, int max) +{ + struct pnfs_layout_segment *lseg; + struct nfs4_filelayout_segment *fl; + int i, rv = 0, cnt; + + lseg = find_only_write_lseg_locked(inode); + if (!lseg) + return 0; + fl = FILELAYOUT_LSEG(lseg); + if (fl->commit_through_mds) + goto out_put; + for (i = 0; i < fl->number_of_buckets; i++) { + if (list_empty(&fl->commit_buckets[i].written)) + continue; + cnt = nfs_scan_commit_list(&fl->commit_buckets[i].written, + &fl->commit_buckets[i].committing, + max); + max -= cnt; + rv += cnt; + } +out_put: + put_lseg(lseg); + return rv; +} + static int alloc_ds_commits(struct inode *inode, struct list_head *list) { struct pnfs_layout_segment *lseg; @@ -886,7 +952,7 @@ static int alloc_ds_commits(struct inode *inode, struct list_head *list) return 0; fl = FILELAYOUT_LSEG(lseg); for (i = 0; i < fl->number_of_buckets; i++) { - if (list_empty(&fl->commit_buckets[i])) + if (list_empty(&fl->commit_buckets[i].committing)) continue; data = nfs_commitdata_alloc(); if (!data) @@ -900,9 +966,9 @@ static int alloc_ds_commits(struct inode *inode, struct list_head *list) out_bad: for (j = i; j < fl->number_of_buckets; j++) { - if (list_empty(&fl->commit_buckets[i])) + if (list_empty(&fl->commit_buckets[i].committing)) continue; - nfs_retry_commit(&fl->commit_buckets[i], lseg); + nfs_retry_commit(&fl->commit_buckets[i].committing, lseg); put_lseg(lseg); /* associated with emptying bucket */ } put_lseg(lseg); @@ -937,7 +1003,7 @@ filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages, nfs_initiate_commit(data, NFS_CLIENT(inode), data->mds_ops, how); } else { - nfs_init_commit(data, &FILELAYOUT_LSEG(data->lseg)->commit_buckets[data->ds_commit_index], data->lseg); + nfs_init_commit(data, &FILELAYOUT_LSEG(data->lseg)->commit_buckets[data->ds_commit_index].committing, data->lseg); filelayout_initiate_commit(data, how); } } @@ -967,8 +1033,9 @@ static struct pnfs_layoutdriver_type filelayout_type = { .free_lseg = filelayout_free_lseg, .pg_read_ops = &filelayout_pg_read_ops, .pg_write_ops = &filelayout_pg_write_ops, - .mark_pnfs_commit = filelayout_mark_pnfs_commit, .choose_commit_list = filelayout_choose_commit_list, + .remove_commit_req = filelayout_remove_commit_req, + .scan_commit_lists = filelayout_scan_commit_lists, .commit_pagelist = filelayout_commit_pagelist, .read_pagelist = filelayout_read_pagelist, .write_pagelist = filelayout_write_pagelist, diff --git a/fs/nfs/nfs4filelayout.h b/fs/nfs/nfs4filelayout.h index 2e42284..21190bb 100644 --- a/fs/nfs/nfs4filelayout.h +++ b/fs/nfs/nfs4filelayout.h @@ -74,6 +74,11 @@ struct nfs4_file_layout_dsaddr { struct nfs4_pnfs_ds *ds_list[1]; }; +struct nfs4_fl_commit_bucket { + struct list_head written; + struct list_head committing; +}; + struct nfs4_filelayout_segment { struct pnfs_layout_segment generic_hdr; u32 stripe_type; @@ -84,7 +89,7 @@ struct nfs4_filelayout_segment { struct nfs4_file_layout_dsaddr *dsaddr; /* Point to GETDEVINFO data */ unsigned int num_fh; struct nfs_fh **fh_array; - struct list_head *commit_buckets; /* Sort commits to ds */ + struct nfs4_fl_commit_bucket *commit_buckets; /* Sort commits to ds */ int number_of_buckets; }; diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index fc5b54b..d21fcea 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -396,67 +396,6 @@ void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *desc, pgoff_t index) } } -#define NFS_SCAN_MAXENTRIES 16 -/** - * nfs_scan_list - Scan a list for matching requests - * @nfsi: NFS inode - * @dst: Destination list - * @idx_start: lower bound of page->index to scan - * @npages: idx_start + npages sets the upper bound to scan. - * @tag: tag to scan for - * - * Moves elements from one of the inode request lists. - * If the number of requests is set to 0, the entire address_space - * starting at index idx_start, is scanned. - * The requests are *not* checked to ensure that they form a contiguous set. - * You must be holding the inode's i_lock when calling this function - */ -int nfs_scan_list(struct nfs_inode *nfsi, - struct list_head *dst, pgoff_t idx_start, - unsigned int npages, int tag) -{ - struct nfs_page *pgvec[NFS_SCAN_MAXENTRIES]; - struct nfs_page *req; - pgoff_t idx_end; - int found, i; - int res; - struct list_head *list; - - res = 0; - if (npages == 0) - idx_end = ~0; - else - idx_end = idx_start + npages - 1; - - for (;;) { - found = radix_tree_gang_lookup_tag(&nfsi->nfs_page_tree, - (void **)&pgvec[0], idx_start, - NFS_SCAN_MAXENTRIES, tag); - if (found <= 0) - break; - for (i = 0; i < found; i++) { - req = pgvec[i]; - if (req->wb_index > idx_end) - goto out; - idx_start = req->wb_index + 1; - if (nfs_lock_request_dontget(req)) { - kref_get(&req->wb_kref); - radix_tree_tag_clear(&nfsi->nfs_page_tree, - req->wb_index, tag); - list = pnfs_choose_commit_list(req, dst); - nfs_list_add_request(req, list); - res++; - if (res == INT_MAX) - goto out; - } - } - /* for latency reduction */ - cond_resched_lock(&nfsi->vfs_inode.i_lock); - } -out: - return res; -} - int __init nfs_init_nfspagecache(void) { nfs_page_cachep = kmem_cache_create("nfs_page", diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 8088d51..ef92f67 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -94,11 +94,10 @@ struct pnfs_layoutdriver_type { const struct nfs_pageio_ops *pg_read_ops; const struct nfs_pageio_ops *pg_write_ops; - /* Returns true if layoutdriver wants to divert this request to - * driver's commit routine. - */ - bool (*mark_pnfs_commit)(struct pnfs_layout_segment *lseg); - struct list_head * (*choose_commit_list) (struct nfs_page *req); + struct list_head * (*choose_commit_list) (struct nfs_page *req, + struct pnfs_layout_segment *lseg); + struct pnfs_layout_segment *(*remove_commit_req) (struct nfs_page *req); + int (*scan_commit_lists) (struct inode *inode, int max); int (*commit_pagelist)(struct inode *inode, struct list_head *mds_pages, int how); /* @@ -262,20 +261,6 @@ static inline int pnfs_enabled_sb(struct nfs_server *nfss) return nfss->pnfs_curr_ld != NULL; } -static inline void -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) -{ - if (lseg) { - struct pnfs_layoutdriver_type *ld; - - ld = NFS_SERVER(req->wb_page->mapping->host)->pnfs_curr_ld; - if (ld->mark_pnfs_commit && ld->mark_pnfs_commit(lseg)) { - set_bit(PG_PNFS_COMMIT, &req->wb_flags); - req->wb_commit_lseg = get_lseg(lseg); - } - } -} - static inline int pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) { @@ -285,26 +270,38 @@ pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) } static inline struct list_head * -pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds) +pnfs_choose_commit_list(struct nfs_page *req, struct pnfs_layout_segment *lseg) { + struct inode *inode = req->wb_context->dentry->d_inode; struct list_head *rv; - if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags)) { - struct inode *inode = req->wb_commit_lseg->pls_layout->plh_inode; - - set_bit(NFS_INO_PNFS_COMMIT, &NFS_I(inode)->flags); - rv = NFS_SERVER(inode)->pnfs_curr_ld->choose_commit_list(req); - /* matched by ref taken when PG_PNFS_COMMIT is set */ - put_lseg(req->wb_commit_lseg); - } else - rv = mds; + if (lseg && NFS_SERVER(inode)->pnfs_curr_ld->choose_commit_list) + rv = NFS_SERVER(inode)->pnfs_curr_ld->choose_commit_list(req, lseg); + else + rv = &NFS_I(inode)->commit_list; return rv; } -static inline void pnfs_clear_request_commit(struct nfs_page *req) +static inline struct pnfs_layout_segment * +pnfs_clear_request_commit(struct nfs_page *req) { - if (test_and_clear_bit(PG_PNFS_COMMIT, &req->wb_flags)) - put_lseg(req->wb_commit_lseg); + struct inode *inode = req->wb_context->dentry->d_inode; + + if (NFS_SERVER(inode)->pnfs_curr_ld && + NFS_SERVER(inode)->pnfs_curr_ld->remove_commit_req) + return NFS_SERVER(inode)->pnfs_curr_ld->remove_commit_req(req); + else + return NULL; +} + +static inline int +pnfs_scan_commit_lists(struct inode *inode, int max) +{ + if (NFS_SERVER(inode)->pnfs_curr_ld && + NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists) + return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(inode, max); + else + return 0; } /* Should the pNFS client commit and return the layout upon a setattr */ @@ -400,11 +397,6 @@ static inline bool pnfs_pageio_init_write(struct nfs_pageio_descriptor *pgio, st return false; } -static inline void -pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) -{ -} - static inline int pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) { @@ -412,13 +404,23 @@ pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how) } static inline struct list_head * -pnfs_choose_commit_list(struct nfs_page *req, struct list_head *mds) +pnfs_choose_commit_list(struct nfs_page *req, struct pnfs_layout_segment *lseg) { - return mds; + struct inode *inode = req->wb_context->dentry->d_inode; + + return &NFS_I(inode)->commit_list; } -static inline void pnfs_clear_request_commit(struct nfs_page *req) +static inline struct pnfs_layout_segment * +pnfs_clear_request_commit(struct nfs_page *req) { + return NULL; +} + +static inline int +pnfs_scan_commit_lists(struct inode *inode, int max) +{ + return 0; } static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index fd8a4f0..a630ad6 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -375,21 +375,14 @@ out_err: /* * Insert a write request into an inode */ -static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req) +static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req) { struct nfs_inode *nfsi = NFS_I(inode); - int error; - - error = radix_tree_preload(GFP_NOFS); - if (error != 0) - goto out; /* Lock the request! */ nfs_lock_request_dontget(req); spin_lock(&inode->i_lock); - error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req); - BUG_ON(error); if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE)) inode->i_version++; set_bit(PG_MAPPED, &req->wb_flags); @@ -398,11 +391,10 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req) nfsi->npages++; kref_get(&req->wb_kref); spin_unlock(&inode->i_lock); - radix_tree_preload_end(); -out: - return error; } +static struct pnfs_layout_segment *nfs_clear_request_commit(struct nfs_page *req); + /* * Remove a write request from an inode */ @@ -410,16 +402,18 @@ static void nfs_inode_remove_request(struct nfs_page *req) { struct inode *inode = req->wb_context->dentry->d_inode; struct nfs_inode *nfsi = NFS_I(inode); + struct pnfs_layout_segment *lseg; BUG_ON (!NFS_WBACK_BUSY(req)); spin_lock(&inode->i_lock); + lseg = nfs_clear_request_commit(req); set_page_private(req->wb_page, 0); ClearPagePrivate(req->wb_page); clear_bit(PG_MAPPED, &req->wb_flags); - radix_tree_delete(&nfsi->nfs_page_tree, req->wb_index); nfsi->npages--; spin_unlock(&inode->i_lock); + put_lseg(lseg); nfs_release_request(req); } @@ -438,31 +432,38 @@ nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) { struct inode *inode = req->wb_context->dentry->d_inode; struct nfs_inode *nfsi = NFS_I(inode); + struct list_head *clist; + clist = pnfs_choose_commit_list(req, lseg); spin_lock(&inode->i_lock); set_bit(PG_CLEAN, &(req)->wb_flags); - radix_tree_tag_set(&nfsi->nfs_page_tree, - req->wb_index, - NFS_PAGE_TAG_COMMIT); + nfs_list_add_request(req, clist); nfsi->ncommit++; spin_unlock(&inode->i_lock); - pnfs_mark_request_commit(req, lseg); inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE); __mark_inode_dirty(inode, I_DIRTY_DATASYNC); } -static int +static void +nfs_clear_page_commit(struct page *page) +{ + dec_zone_page_state(page, NR_UNSTABLE_NFS); + dec_bdi_stat(page->mapping->backing_dev_info, BDI_RECLAIMABLE); +} + +static struct pnfs_layout_segment * nfs_clear_request_commit(struct nfs_page *req) { - struct page *page = req->wb_page; + struct pnfs_layout_segment *lseg = NULL; if (test_and_clear_bit(PG_CLEAN, &(req)->wb_flags)) { - dec_zone_page_state(page, NR_UNSTABLE_NFS); - dec_bdi_stat(page->mapping->backing_dev_info, BDI_RECLAIMABLE); - return 1; + nfs_clear_page_commit(req->wb_page); + lseg = pnfs_clear_request_commit(req); + NFS_I(req->wb_context->dentry->d_inode)->ncommit--; + list_del(&req->wb_list); } - return 0; + return lseg; } static inline @@ -494,10 +495,10 @@ nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg) { } -static inline int +static inline struct pnfs_layout_segment * nfs_clear_request_commit(struct nfs_page *req) { - return 0; + return NULL; } static inline @@ -518,46 +519,67 @@ int nfs_reschedule_unstable_write(struct nfs_page *req, static int nfs_need_commit(struct nfs_inode *nfsi) { - return radix_tree_tagged(&nfsi->nfs_page_tree, NFS_PAGE_TAG_COMMIT); + return nfsi->ncommit > 0; } +/* i_lock held by caller */ +int +nfs_scan_commit_list(struct list_head *src, struct list_head *dst, int max) +{ + struct nfs_page *req, *tmp; + int ret = 0; + + list_for_each_entry_safe(req, tmp, src, wb_list) { + if (nfs_lock_request_dontget(req)) { + kref_get(&req->wb_kref); + list_move_tail(&req->wb_list, dst); + clear_bit(PG_CLEAN, &(req)->wb_flags); + ret++; + if (ret == max) + break; + } + } + return ret; +} +EXPORT_SYMBOL_GPL(nfs_scan_commit_list); + /* * nfs_scan_commit - Scan an inode for commit requests * @inode: NFS inode to scan * @dst: destination list - * @idx_start: lower bound of page->index to scan. - * @npages: idx_start + npages sets the upper bound to scan. * * Moves requests from the inode's 'commit' request list. * The requests are *not* checked to ensure that they form a contiguous set. */ static int -nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages) +nfs_scan_commit(struct inode *inode, struct list_head *dst) { struct nfs_inode *nfsi = NFS_I(inode); - int ret; - - if (!nfs_need_commit(nfsi)) - return 0; + int ret = 0; spin_lock(&inode->i_lock); - ret = nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT); - if (ret > 0) + if (nfsi->ncommit > 0) { + int pnfs_ret; + + ret = nfs_scan_commit_list(&nfsi->commit_list, dst, INT_MAX); + pnfs_ret = pnfs_scan_commit_lists(inode, INT_MAX - ret); + if (pnfs_ret) { + ret += pnfs_ret; + set_bit(NFS_INO_PNFS_COMMIT, &nfsi->flags); + } nfsi->ncommit -= ret; + } spin_unlock(&inode->i_lock); - - if (nfs_need_commit(NFS_I(inode))) - __mark_inode_dirty(inode, I_DIRTY_DATASYNC); - return ret; } + #else static inline int nfs_need_commit(struct nfs_inode *nfsi) { return 0; } -static inline int nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages) +static inline int nfs_scan_commit(struct inode *inode, struct list_head *dst) { return 0; } @@ -579,6 +601,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, unsigned int rqend; unsigned int end; int error; + struct pnfs_layout_segment *lseg = NULL; if (!PagePrivate(page)) return NULL; @@ -614,12 +637,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, spin_lock(&inode->i_lock); } - if (nfs_clear_request_commit(req) && - radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree, - req->wb_index, NFS_PAGE_TAG_COMMIT) != NULL) { - NFS_I(inode)->ncommit--; - pnfs_clear_request_commit(req); - } + lseg = nfs_clear_request_commit(req); /* Okay, the request matches. Update the region */ if (offset < req->wb_offset) { @@ -632,6 +650,7 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, req->wb_bytes = rqend - req->wb_offset; out_unlock: spin_unlock(&inode->i_lock); + put_lseg(lseg); return req; out_flushme: spin_unlock(&inode->i_lock); @@ -653,7 +672,6 @@ static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, { struct inode *inode = page->mapping->host; struct nfs_page *req; - int error; req = nfs_try_to_update_request(inode, page, offset, bytes); if (req != NULL) @@ -661,11 +679,7 @@ static struct nfs_page * nfs_setup_write_request(struct nfs_open_context* ctx, req = nfs_create_request(ctx, inode, page, offset, bytes); if (IS_ERR(req)) goto out; - error = nfs_inode_add_request(inode, req); - if (error != 0) { - nfs_release_request(req); - req = ERR_PTR(error); - } + nfs_inode_add_request(inode, req); out: return req; } @@ -1458,7 +1472,7 @@ void nfs_commit_release_pages(struct nfs_write_data *data) while (!list_empty(&data->pages)) { req = nfs_list_entry(data->pages.next); nfs_list_remove_request(req); - nfs_clear_request_commit(req); + nfs_clear_page_commit(req->wb_page); dprintk("NFS: commit (%s/%lld %d@%lld)", req->wb_context->dentry->d_sb->s_id, @@ -1515,7 +1529,7 @@ int nfs_commit_inode(struct inode *inode, int how) res = nfs_commit_set_lock(NFS_I(inode), may_wait); if (res <= 0) goto out_mark_dirty; - res = nfs_scan_commit(inode, &head, 0, 0); + res = nfs_scan_commit(inode, &head); if (res) { int error; diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index ce8e436..0a63ab2 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -171,13 +171,9 @@ struct nfs_inode { */ __be32 cookieverf[2]; - /* - * This is the list of dirty unwritten pages. - */ - struct radix_tree_root nfs_page_tree; - unsigned long npages; unsigned long ncommit; + struct list_head commit_list; /* Open contexts for shared mmap writes */ struct list_head open_files; diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h index 65b563f..50856e9 100644 --- a/include/linux/nfs_page.h +++ b/include/linux/nfs_page.h @@ -19,11 +19,6 @@ #include <linux/kref.h> /* - * Valid flags for the radix tree - */ -#define NFS_PAGE_TAG_COMMIT 1 - -/* * Valid flags for a dirty buffer */ enum { @@ -32,16 +27,12 @@ enum { PG_CLEAN, PG_NEED_COMMIT, PG_NEED_RESCHED, - PG_PNFS_COMMIT, PG_PARTIAL_READ_FAILED, }; struct nfs_inode; struct nfs_page { - union { - struct list_head wb_list; /* Defines state of page: */ - struct pnfs_layout_segment *wb_commit_lseg; /* Used when PG_PNFS_COMMIT set */ - }; + struct list_head wb_list; /* Defines state of page: */ struct page *wb_page; /* page to read in/write out */ struct nfs_open_context *wb_context; /* File state context info */ struct nfs_lock_context *wb_lock_context; /* lock context info */ @@ -89,8 +80,6 @@ extern struct nfs_page *nfs_create_request(struct nfs_open_context *ctx, extern void nfs_release_request(struct nfs_page *req); -extern int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *dst, - pgoff_t idx_start, unsigned int npages, int tag); extern void nfs_pageio_init(struct nfs_pageio_descriptor *desc, struct inode *inode, const struct nfs_pageio_ops *pg_ops, |
