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authorIan Kent <raven@themaw.net>2008-07-23 21:30:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 10:47:32 -0700
commit06a3598552dc3b2b30eb18bd53bbac2a901489d7 (patch)
treebb209268deac3b12d63d07c67a76ba10561f6a11 /fs/autofs4/expire.c
parentautofs4: fix direct mount pending expire race - correction (diff)
downloadlinux-dev-06a3598552dc3b2b30eb18bd53bbac2a901489d7.tar.xz
linux-dev-06a3598552dc3b2b30eb18bd53bbac2a901489d7.zip
autofs4: reorganize expire pending wait function calls
This patch re-orgnirzes the checking for and waiting on active expires and elininates redundant checks. Signed-off-by: Ian Kent <raven@themaw.net> Cc: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/autofs4/expire.c')
-rw-r--r--fs/autofs4/expire.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 705b9f057fb3..cdabb796ff01 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -402,6 +402,35 @@ found:
return expired;
}
+int autofs4_expire_wait(struct dentry *dentry)
+{
+ struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+ struct autofs_info *ino = autofs4_dentry_ino(dentry);
+ int status;
+
+ /* Block on any pending expire */
+ spin_lock(&sbi->fs_lock);
+ if (ino->flags & AUTOFS_INF_EXPIRING) {
+ spin_unlock(&sbi->fs_lock);
+
+ DPRINTK("waiting for expire %p name=%.*s",
+ dentry, dentry->d_name.len, dentry->d_name.name);
+
+ status = autofs4_wait(sbi, dentry, NFY_NONE);
+ wait_for_completion(&ino->expire_complete);
+
+ DPRINTK("expire done status=%d", status);
+
+ if (d_unhashed(dentry))
+ return -EAGAIN;
+
+ return status;
+ }
+ spin_unlock(&sbi->fs_lock);
+
+ return 0;
+}
+
/* Perform an expiry operation */
int autofs4_expire_run(struct super_block *sb,
struct vfsmount *mnt,