| From: Omar Sandoval <osandov@fb.com> |
| Date: Fri, 11 May 2018 13:13:40 -0700 |
| Subject: Btrfs: reserve space for O_TMPFILE orphan item deletion |
| |
| commit 399b0bbf5f680797d3599fa14f16706ffc470145 upstream. |
| |
| btrfs_link() calls btrfs_orphan_del() if it's linking an O_TMPFILE but |
| it doesn't reserve space to do so. Even before the removal of the |
| orphan_block_rsv it wasn't using it. |
| |
| Fixes: ef3b9af50bfa ("Btrfs: implement inode_operations callback tmpfile") |
| Reviewed-by: Filipe Manana <fdmanana@suse.com> |
| Signed-off-by: Omar Sandoval <osandov@fb.com> |
| Signed-off-by: David Sterba <dsterba@suse.com> |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| fs/btrfs/inode.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/fs/btrfs/inode.c |
| +++ b/fs/btrfs/inode.c |
| @@ -6142,8 +6142,9 @@ static int btrfs_link(struct dentry *old |
| * 2 items for inode and inode ref |
| * 2 items for dir items |
| * 1 item for parent inode |
| + * 1 item for orphan item deletion if O_TMPFILE |
| */ |
| - trans = btrfs_start_transaction(root, 5); |
| + trans = btrfs_start_transaction(root, inode->i_nlink ? 5 : 6); |
| if (IS_ERR(trans)) { |
| err = PTR_ERR(trans); |
| goto fail; |
