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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>
This commit is contained in:
Ryusuke Konishi 2009-11-11 01:28:48 +09:00
parent e2073e7857
commit a49762fd11
1 changed files with 0 additions and 3 deletions
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3
fs/nilfs2/inode.c
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@ -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);