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Btrfs: do not check inode's runtime flags under root->orphan_lock 

It's not necessary to hold ->orphan_lock when checking inode's runtime
flags.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2018-01-25 11:02:55 -07:00 committed by David Sterba
parent bc5511d0ed
commit 3d5addafd0
1 changed files with 12 additions and 9 deletions
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21
fs/btrfs/inode.c
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@ -3355,14 +3355,6 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans,
return -ENOMEM;
}
spin_lock(&root->orphan_lock);
if (!root->orphan_block_rsv) {
root->orphan_block_rsv = block_rsv;
} else if (block_rsv) {
btrfs_free_block_rsv(fs_info, block_rsv);
block_rsv = NULL;
}
if (!test_and_set_bit(BTRFS_INODE_HAS_ORPHAN_ITEM,
&inode->runtime_flags)) {
#if 0
@ -3377,12 +3369,23 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans,
insert = 1;
#endif
insert = 1;
atomic_inc(&root->orphan_inodes);
}
if (!test_and_set_bit(BTRFS_INODE_ORPHAN_META_RESERVED,
&inode->runtime_flags))
reserve = 1;
spin_lock(&root->orphan_lock);
/* If someone has created ->orphan_block_rsv, be happy to use it. */
if (!root->orphan_block_rsv) {
root->orphan_block_rsv = block_rsv;
} else if (block_rsv) {
btrfs_free_block_rsv(fs_info, block_rsv);
block_rsv = NULL;
}
if (insert)
atomic_inc(&root->orphan_inodes);
spin_unlock(&root->orphan_lock);
/* grab metadata reservation from transaction handle */