aboutsummaryrefslogtreecommitdiff
path: root/fs/autofs4
diff options
context:
space:
mode:
Diffstat (limited to 'fs/autofs4')
-rw-r--r--fs/autofs4/expire.c36
-rw-r--r--fs/autofs4/root.c4
2 files changed, 26 insertions, 14 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 053d92a745b..6ae2fc8233f 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -47,6 +47,7 @@ static inline int autofs4_can_expire(struct dentry *dentry,
/* Check a mount point for busyness */
static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
{
+ struct dentry *top = dentry;
int status = 1;
DPRINTK("dentry %p %.*s",
@@ -62,9 +63,14 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
if (is_autofs4_dentry(dentry))
goto done;
- /* The big question */
- if (may_umount_tree(mnt) == 0)
- status = 0;
+ /* Update the expiry counter if fs is busy */
+ if (may_umount_tree(mnt)) {
+ struct autofs_info *ino = autofs4_dentry_ino(top);
+ ino->last_used = jiffies;
+ goto done;
+ }
+
+ status = 0;
done:
DPRINTK("returning = %d", status);
mntput(mnt);
@@ -101,7 +107,7 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
unsigned long timeout,
int do_now)
{
- struct autofs_info *ino;
+ struct autofs_info *top_ino = autofs4_dentry_ino(top);
struct dentry *p;
DPRINTK("top %p %.*s",
@@ -127,14 +133,16 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
* Is someone visiting anywhere in the subtree ?
* If there's no mount we need to check the usage
* count for the autofs dentry.
+ * If the fs is busy update the expiry counter.
*/
- ino = autofs4_dentry_ino(p);
if (d_mountpoint(p)) {
if (autofs4_mount_busy(mnt, p)) {
+ top_ino->last_used = jiffies;
dput(p);
return 1;
}
} else {
+ struct autofs_info *ino = autofs4_dentry_ino(p);
unsigned int ino_count = atomic_read(&ino->count);
/* allow for dget above and top is already dgot */
@@ -144,6 +152,7 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
ino_count++;
if (atomic_read(&p->d_count) > ino_count) {
+ top_ino->last_used = jiffies;
dput(p);
return 1;
}
@@ -183,14 +192,13 @@ static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
spin_unlock(&dcache_lock);
if (d_mountpoint(p)) {
- /* Can we expire this guy */
- if (!autofs4_can_expire(p, timeout, do_now))
+ /* Can we umount this guy */
+ if (autofs4_mount_busy(mnt, p))
goto cont;
- /* Can we umount this guy */
- if (!autofs4_mount_busy(mnt, p))
+ /* Can we expire this guy */
+ if (autofs4_can_expire(p, timeout, do_now))
return p;
-
}
cont:
dput(p);
@@ -246,12 +254,12 @@ static struct dentry *autofs4_expire(struct super_block *sb,
DPRINTK("checking mountpoint %p %.*s",
dentry, (int)dentry->d_name.len, dentry->d_name.name);
- /* Can we expire this guy */
- if (!autofs4_can_expire(dentry, timeout, do_now))
+ /* Can we umount this guy */
+ if (autofs4_mount_busy(mnt, dentry))
goto next;
- /* Can we umount this guy */
- if (!autofs4_mount_busy(mnt, dentry)) {
+ /* Can we expire this guy */
+ if (autofs4_can_expire(dentry, timeout, do_now)) {
expired = dentry;
break;
}
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index d196712c4b9..3a4a5b47575 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -330,6 +330,10 @@ static int try_to_fill_dentry(struct vfsmount *mnt, struct dentry *dentry, int f
if (!autofs4_oz_mode(sbi))
autofs4_update_usage(mnt, dentry);
+ /* Initialize expiry counter after successful mount */
+ if (ino)
+ ino->last_used = jiffies;
+
spin_lock(&dentry->d_lock);
dentry->d_flags &= ~DCACHE_AUTOFS_PENDING;
spin_unlock(&dentry->d_lock);