From acdc53b2146c7ee67feb1f02f7bc3020126514b8 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 19 Feb 2010 17:03:26 -0800 Subject: NFS: Replace __nfs_write_mapping with sync_inode() Now that we have correct COMMIT semantics in writeback_single_inode, we can reduce and simplify nfs_wb_all(). Also replace nfs_wb_nocommit() with a call to filemap_write_and_wait(), which doesn't need to hold the inode->i_mutex. With that done, we can eliminate nfs_write_mapping() altogether. Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 42 +++++------------------------------------- 1 file changed, 5 insertions(+), 37 deletions(-) (limited to 'fs/nfs/write.c') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index dc7f5e9a23b..0b323091b48 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1454,7 +1454,6 @@ long nfs_sync_mapping_wait(struct address_space *mapping, struct writeback_contr pgoff_t idx_start, idx_end; unsigned int npages = 0; LIST_HEAD(head); - int nocommit = how & FLUSH_NOCOMMIT; long pages, ret; /* FIXME */ @@ -1471,14 +1470,11 @@ long nfs_sync_mapping_wait(struct address_space *mapping, struct writeback_contr npages = 0; } } - how &= ~FLUSH_NOCOMMIT; spin_lock(&inode->i_lock); do { ret = nfs_wait_on_requests_locked(inode, idx_start, npages); if (ret != 0) continue; - if (nocommit) - break; pages = nfs_scan_commit(inode, &head, idx_start, npages); if (pages == 0) break; @@ -1492,47 +1488,19 @@ long nfs_sync_mapping_wait(struct address_space *mapping, struct writeback_contr return ret; } -static int __nfs_write_mapping(struct address_space *mapping, struct writeback_control *wbc, int how) -{ - int ret; - - ret = nfs_writepages(mapping, wbc); - if (ret < 0) - goto out; - ret = nfs_sync_mapping_wait(mapping, wbc, how); - if (ret < 0) - goto out; - return 0; -out: - __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); - return ret; -} - -/* Two pass sync: first using WB_SYNC_NONE, then WB_SYNC_ALL */ -static int nfs_write_mapping(struct address_space *mapping, int how) +/* + * flush the inode to disk. + */ +int nfs_wb_all(struct inode *inode) { struct writeback_control wbc = { - .bdi = mapping->backing_dev_info, .sync_mode = WB_SYNC_ALL, .nr_to_write = LONG_MAX, .range_start = 0, .range_end = LLONG_MAX, }; - return __nfs_write_mapping(mapping, &wbc, how); -} - -/* - * flush the inode to disk. - */ -int nfs_wb_all(struct inode *inode) -{ - return nfs_write_mapping(inode->i_mapping, 0); -} - -int nfs_wb_nocommit(struct inode *inode) -{ - return nfs_write_mapping(inode->i_mapping, FLUSH_NOCOMMIT); + return sync_inode(inode, &wbc); } int nfs_wb_page_cancel(struct inode *inode, struct page *page) -- cgit v1.2.3-18-g5258