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path: root/fs/autofs4/expire.c
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Diffstat (limited to 'fs/autofs4/expire.c')
-rw-r--r--fs/autofs4/expire.c55
1 files changed, 31 insertions, 24 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index cc1d0136590..f43100b9662 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -26,10 +26,6 @@ static inline int autofs4_can_expire(struct dentry *dentry,
if (ino == NULL)
return 0;
- /* No point expiring a pending mount */
- if (ino->flags & AUTOFS_INF_PENDING)
- return 0;
-
if (!do_now) {
/* Too young to die */
if (!timeout || time_after(ino->last_used + timeout, now))
@@ -56,7 +52,7 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
path_get(&path);
- if (!follow_down(&path))
+ if (!follow_down_one(&path))
goto done;
if (is_autofs4_dentry(path.dentry)) {
@@ -100,7 +96,7 @@ static struct dentry *get_next_positive_dentry(struct dentry *prev,
struct dentry *p, *ret;
if (prev == NULL)
- return dget(prev);
+ return dget(root);
spin_lock(&autofs4_lock);
relock:
@@ -137,7 +133,7 @@ again:
spin_lock_nested(&ret->d_lock, DENTRY_D_LOCK_NESTED);
/* Negative dentry - try next */
if (!simple_positive(ret)) {
- spin_unlock(&ret->d_lock);
+ spin_unlock(&p->d_lock);
p = ret;
goto again;
}
@@ -283,6 +279,7 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
unsigned long timeout;
struct dentry *root = dget(sb->s_root);
int do_now = how & AUTOFS_EXP_IMMEDIATE;
+ struct autofs_info *ino;
if (!root)
return NULL;
@@ -291,19 +288,21 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
timeout = sbi->exp_timeout;
spin_lock(&sbi->fs_lock);
+ ino = autofs4_dentry_ino(root);
+ /* No point expiring a pending mount */
+ if (ino->flags & AUTOFS_INF_PENDING) {
+ spin_unlock(&sbi->fs_lock);
+ return NULL;
+ }
+ managed_dentry_set_transit(root);
if (!autofs4_direct_busy(mnt, root, timeout, do_now)) {
struct autofs_info *ino = autofs4_dentry_ino(root);
- if (d_mountpoint(root)) {
- ino->flags |= AUTOFS_INF_MOUNTPOINT;
- spin_lock(&root->d_lock);
- root->d_flags &= ~DCACHE_MOUNTED;
- spin_unlock(&root->d_lock);
- }
ino->flags |= AUTOFS_INF_EXPIRING;
init_completion(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
return root;
}
+ managed_dentry_clear_transit(root);
spin_unlock(&sbi->fs_lock);
dput(root);
@@ -340,6 +339,10 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
while ((dentry = get_next_positive_dentry(dentry, root))) {
spin_lock(&sbi->fs_lock);
ino = autofs4_dentry_ino(dentry);
+ /* No point expiring a pending mount */
+ if (ino->flags & AUTOFS_INF_PENDING)
+ goto cont;
+ managed_dentry_set_transit(dentry);
/*
* Case 1: (i) indirect mount or top level pseudo direct mount
@@ -399,6 +402,8 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
}
}
next:
+ managed_dentry_clear_transit(dentry);
+cont:
spin_unlock(&sbi->fs_lock);
}
return NULL;
@@ -479,6 +484,8 @@ int autofs4_expire_run(struct super_block *sb,
spin_lock(&sbi->fs_lock);
ino = autofs4_dentry_ino(dentry);
ino->flags &= ~AUTOFS_INF_EXPIRING;
+ if (!d_unhashed(dentry))
+ managed_dentry_clear_transit(dentry);
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
@@ -504,18 +511,18 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
ret = autofs4_wait(sbi, dentry, NFY_EXPIRE);
spin_lock(&sbi->fs_lock);
- if (ino->flags & AUTOFS_INF_MOUNTPOINT) {
- spin_lock(&sb->s_root->d_lock);
- /*
- * If we haven't been expired away, then reset
- * mounted status.
- */
- if (mnt->mnt_parent != mnt)
- sb->s_root->d_flags |= DCACHE_MOUNTED;
- spin_unlock(&sb->s_root->d_lock);
- ino->flags &= ~AUTOFS_INF_MOUNTPOINT;
- }
ino->flags &= ~AUTOFS_INF_EXPIRING;
+ spin_lock(&dentry->d_lock);
+ if (ret)
+ __managed_dentry_clear_transit(dentry);
+ else {
+ if ((IS_ROOT(dentry) ||
+ (autofs_type_indirect(sbi->type) &&
+ IS_ROOT(dentry->d_parent))) &&
+ !(dentry->d_flags & DCACHE_NEED_AUTOMOUNT))
+ __managed_dentry_set_automount(dentry);
+ }
+ spin_unlock(&dentry->d_lock);
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
dput(dentry);