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authorMiao Xie <miaox@cn.fujitsu.com>2013-01-22 10:50:35 +0000
committerJosef Bacik <jbacik@fusionio.com>2013-02-20 09:37:23 -0500
commit63607cc86ab808e077a895be2d7895dcbf6f4cf3 (patch)
tree595ef8461a5f91b3eceed4fa06b553f14ad52ca3 /fs/btrfs/inode.c
parenteebc60840636e7351371fc17bcd057384bf0c16a (diff)
downloadop-kernel-dev-63607cc86ab808e077a895be2d7895dcbf6f4cf3.zip
op-kernel-dev-63607cc86ab808e077a895be2d7895dcbf6f4cf3.tar.gz
Btrfs: traverse and flush the delalloc inodes once
btrfs_start_delalloc_inodes() needn't traverse and flush the delalloc inodes repeatedly. It is because we can regard the data that the users write after we start delalloc inodes flush as the one which is after the delalloc inodes flush is done, and we can flush it next time. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r--fs/btrfs/inode.c9
1 files changed, 1 insertions, 8 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 280e4d4..d1e3a2d 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7614,7 +7614,7 @@ int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput)
INIT_LIST_HEAD(&works);
INIT_LIST_HEAD(&splice);
-again:
+
spin_lock(&root->fs_info->delalloc_lock);
list_splice_init(&root->fs_info->delalloc_inodes, &splice);
while (!list_empty(&splice)) {
@@ -7650,13 +7650,6 @@ again:
btrfs_wait_and_free_delalloc_work(work);
}
- spin_lock(&root->fs_info->delalloc_lock);
- if (!list_empty(&root->fs_info->delalloc_inodes)) {
- spin_unlock(&root->fs_info->delalloc_lock);
- goto again;
- }
- spin_unlock(&root->fs_info->delalloc_lock);
-
/* the filemap_flush will queue IO into the worker threads, but
* we have to make sure the IO is actually started and that
* ordered extents get created before we return
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