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>
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 2a0a5a3..412b25a 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -525,7 +525,6 @@
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 @@
"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);