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| author | Linus Walleij <linus.walleij@linaro.org> | 2016-03-09 17:40:37 +0700 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-03-09 17:40:37 +0700 |
| commit | 0bae2f17323a4630c487a9b77c37bebf407424af (patch) | |
| tree | fc1f71a0209ec61841a5acb65d59d147af3cc4fa /fs/btrfs/tree-log.c | |
| parent | adf32eaa05323449b74b36f25b918583e2bdb6f1 (diff) | |
| parent | ca801a22f465eae39fadc770e15b5b7e82595f81 (diff) | |
| download | linux-0bae2f17323a4630c487a9b77c37bebf407424af.tar.gz linux-0bae2f17323a4630c487a9b77c37bebf407424af.tar.bz2 linux-0bae2f17323a4630c487a9b77c37bebf407424af.zip | |
Merge branch 'ib-mfd-regulator-gpio-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into devel
Diffstat (limited to 'fs/btrfs/tree-log.c')
| -rw-r--r-- | fs/btrfs/tree-log.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 323e12cc9d2f..978c3a810893 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -4127,7 +4127,9 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans, struct inode *inode, struct btrfs_path *path, struct list_head *logged_list, - struct btrfs_log_ctx *ctx) + struct btrfs_log_ctx *ctx, + const u64 start, + const u64 end) { struct extent_map *em, *n; struct list_head extents; @@ -4166,7 +4168,13 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans, } list_sort(NULL, &extents, extent_cmp); - + /* + * Collect any new ordered extents within the range. This is to + * prevent logging file extent items without waiting for the disk + * location they point to being written. We do this only to deal + * with races against concurrent lockless direct IO writes. + */ + btrfs_get_logged_extents(inode, logged_list, start, end); process: while (!list_empty(&extents)) { em = list_entry(extents.next, struct extent_map, list); @@ -4701,7 +4709,7 @@ log_extents: goto out_unlock; } ret = btrfs_log_changed_extents(trans, root, inode, dst_path, - &logged_list, ctx); + &logged_list, ctx, start, end); if (ret) { err = ret; goto out_unlock; |