lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

autofs4 - remove autofs4_lock

Browse Source 
The autofs4_lock introduced by the rcu-walk changes has unnecessarily
broad scope. The locking is better handled by the per-autofs super
block lookup_lock.

Signed-off-by: Ian Kent <raven@themaw.net>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Ian Kent
2011-03-25 01:51:31 +08:00
committed by Al Viro
parent 83fb96bfc7
commit e7854723d0
4 changed files with 20 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
fs/autofs4/waitq.c
View File

@@ -197,12 +197,12 @@ rename_retry:
seq = read_seqbegin(&rename_lock);
rcu_read_lock();
spin_lock(&autofs4_lock);
spin_lock(&sbi->fs_lock);
for (tmp = dentry ; tmp != root ; tmp = tmp->d_parent)
len += tmp->d_name.len + 1;
if (!len || --len > NAME_MAX) {
spin_unlock(&autofs4_lock);
spin_unlock(&sbi->fs_lock);
rcu_read_unlock();
if (read_seqretry(&rename_lock, seq))
goto rename_retry;
@@ -218,7 +218,7 @@ rename_retry:
p -= tmp->d_name.len;
strncpy(p, tmp->d_name.name, tmp->d_name.len);
}
spin_unlock(&autofs4_lock);
spin_unlock(&sbi->fs_lock);
rcu_read_unlock();
if (read_seqretry(&rename_lock, seq))
goto rename_retry;