3.16.61-rc1 review patch. If anyone has any objections, please let me know.
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From: Omar Sandoval osandov@fb.com
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;