diff options
Diffstat (limited to 'fs/nfs/filelayout')
| -rw-r--r-- | fs/nfs/filelayout/filelayout.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c index 2576d28bffc0..524e66f6bb9c 100644 --- a/fs/nfs/filelayout/filelayout.c +++ b/fs/nfs/filelayout/filelayout.c @@ -1237,6 +1237,36 @@ restart: spin_unlock(cinfo->lock); } +/* filelayout_search_commit_reqs - Search lists in @cinfo for the head reqest + * for @page + * @cinfo - commit info for current inode + * @page - page to search for matching head request + * + * Returns a the head request if one is found, otherwise returns NULL. + */ +static struct nfs_page * +filelayout_search_commit_reqs(struct nfs_commit_info *cinfo, struct page *page) +{ + struct nfs_page *freq, *t; + struct pnfs_commit_bucket *b; + int i; + + /* Linearly search the commit lists for each bucket until a matching + * request is found */ + for (i = 0, b = cinfo->ds->buckets; i < cinfo->ds->nbuckets; i++, b++) { + list_for_each_entry_safe(freq, t, &b->written, wb_list) { + if (freq->wb_page == page) + return freq->wb_head; + } + list_for_each_entry_safe(freq, t, &b->committing, wb_list) { + if (freq->wb_page == page) + return freq->wb_head; + } + } + + return NULL; +} + static void filelayout_retry_commit(struct nfs_commit_info *cinfo, int idx) { struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; @@ -1386,6 +1416,7 @@ static struct pnfs_layoutdriver_type filelayout_type = { .clear_request_commit = filelayout_clear_request_commit, .scan_commit_lists = filelayout_scan_commit_lists, .recover_commit_reqs = filelayout_recover_commit_reqs, + .search_commit_reqs = filelayout_search_commit_reqs, .commit_pagelist = filelayout_commit_pagelist, .read_pagelist = filelayout_read_pagelist, .write_pagelist = filelayout_write_pagelist, |