nilfs2: remove buffer locking in nilfs_mark_inode_dirty

This lock is eliminable because inodes on the buffer can be updated
independently.  Although a log writer also fills in bmap data on the
on-disk inodes, this update is exclusively done by a log writer lock.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

1 files changed, 0 insertions, 3 deletions

diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 2a0a5a3ac134..412b25a7d345 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -525,7 +525,6 @@ void nilfs_update_inode(struct inode *inode, struct buffer_head *ibh)
 
         raw_inode = nilfs_ifile_map_inode(sbi->s_ifile, ino, ibh);
 
-        /* The buffer is guarded with lock_buffer() by the caller */
         if (test_and_clear_bit(NILFS_I_NEW, &ii->i_state))
                 memset(raw_inode, 0, NILFS_MDT(sbi->s_ifile)->mi_entry_size);
         set_bit(NILFS_I_INODE_DIRTY, &ii->i_state);
@@ -745,9 +744,7 @@ int nilfs_mark_inode_dirty(struct inode *inode)
                               "failed to reget inode block.\n");
                 return err;
         }
-        lock_buffer(ibh);
         nilfs_update_inode(inode, ibh);
-        unlock_buffer(ibh);
         nilfs_mdt_mark_buffer_dirty(ibh);
         nilfs_mdt_mark_dirty(sbi->s_ifile);
         brelse(ibh);