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authorChris Mason <chris.mason@oracle.com>2009-02-12 09:45:08 -0500
committerChris Mason <chris.mason@oracle.com>2009-02-12 09:45:08 -0500
commite1df36d2f18254d0690a0fbe036cece74ec311b8 (patch)
tree34823b4533c7fe2d5a329a03b99faa6bd0a88956
parent536ac8ae86e68bb5574d7cc81c7d229a86b82601 (diff)
downloadop-kernel-dev-e1df36d2f18254d0690a0fbe036cece74ec311b8.zip
op-kernel-dev-e1df36d2f18254d0690a0fbe036cece74ec311b8.tar.gz
Btrfs: don't clean old snapshots on sync(1)
Cleaning old snapshots can make sync(1) somewhat slow, and some users and applications still use it in a global fsync kind of workload. This patch changes btrfs not to clean old snapshots during sync, which is safe from a FS consistency point of view. The major downside is that it makes it difficult to tell when old snapshots have been reaped and the space they were using has been reclaimed. A new ioctl will be added for this purpose instead. Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/super.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 66b8341..19a4daf 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -379,7 +379,6 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
btrfs_start_delalloc_inodes(root);
btrfs_wait_ordered_extents(root, 0);
- btrfs_clean_old_snapshots(root);
trans = btrfs_start_transaction(root, 1);
ret = btrfs_commit_transaction(trans, root);
sb->s_dirt = 0;
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