#include "autofs_i.h"
-DEFINE_SPINLOCK(autofs4_lock);
-
static int autofs4_dir_symlink(struct inode *,struct dentry *,const char *);
static int autofs4_dir_unlink(struct inode *,struct dentry *);
static int autofs4_dir_rmdir(struct inode *,struct dentry *);
* autofs file system so just let the libfs routines handle
* it.
*/
- spin_lock(&autofs4_lock);
+ spin_lock(&sbi->lookup_lock);
spin_lock(&dentry->d_lock);
if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
spin_unlock(&dentry->d_lock);
- spin_unlock(&autofs4_lock);
+ spin_unlock(&sbi->lookup_lock);
return -ENOENT;
}
spin_unlock(&dentry->d_lock);
- spin_unlock(&autofs4_lock);
+ spin_unlock(&sbi->lookup_lock);
out:
return dcache_dir_open(inode, file);
const unsigned char *str = name->name;
struct list_head *p, *head;
- spin_lock(&autofs4_lock);
spin_lock(&sbi->lookup_lock);
head = &sbi->active_list;
list_for_each(p, head) {
dget_dlock(active);
spin_unlock(&active->d_lock);
spin_unlock(&sbi->lookup_lock);
- spin_unlock(&autofs4_lock);
return active;
}
next:
spin_unlock(&active->d_lock);
}
spin_unlock(&sbi->lookup_lock);
- spin_unlock(&autofs4_lock);
return NULL;
}
const unsigned char *str = name->name;
struct list_head *p, *head;
- spin_lock(&autofs4_lock);
spin_lock(&sbi->lookup_lock);
head = &sbi->expiring_list;
list_for_each(p, head) {
dget_dlock(expiring);
spin_unlock(&expiring->d_lock);
spin_unlock(&sbi->lookup_lock);
- spin_unlock(&autofs4_lock);
return expiring;
}
next:
spin_unlock(&expiring->d_lock);
}
spin_unlock(&sbi->lookup_lock);
- spin_unlock(&autofs4_lock);
return NULL;
}
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
- int status;
+ int status = 0;
if (ino->flags & AUTOFS_INF_PENDING) {
DPRINTK("waiting for mount name=%.*s",
dentry->d_name.len, dentry->d_name.name);
status = autofs4_wait(sbi, dentry, NFY_MOUNT);
DPRINTK("mount wait done status=%d", status);
- ino->last_used = jiffies;
- return status;
}
- return 0;
+ ino->last_used = jiffies;
+ return status;
}
static int do_expire_wait(struct dentry *dentry)
*/
if (autofs_type_indirect(sbi->type) && d_unhashed(dentry)) {
struct dentry *parent = dentry->d_parent;
+ struct autofs_info *ino;
struct dentry *new = d_lookup(parent, &dentry->d_name);
if (!new)
return NULL;
+ ino = autofs4_dentry_ino(new);
+ ino->last_used = jiffies;
dput(path->dentry);
path->dentry = new;
}
DPRINTK("dentry=%p %.*s",
dentry, dentry->d_name.len, dentry->d_name.name);
- /*
- * Someone may have manually umounted this or it was a submount
- * that has gone away.
- */
- spin_lock(&dentry->d_lock);
- if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
- if (!(dentry->d_flags & DCACHE_MANAGE_TRANSIT) &&
- (dentry->d_flags & DCACHE_NEED_AUTOMOUNT))
- __managed_dentry_set_transit(path->dentry);
- }
- spin_unlock(&dentry->d_lock);
-
/* The daemon never triggers a mount. */
if (autofs4_oz_mode(sbi))
return NULL;
done:
if (!(ino->flags & AUTOFS_INF_EXPIRING)) {
/*
- * Any needed mounting has been completed and the path updated
- * so turn this into a normal dentry so we don't continually
- * call ->d_automount() and ->d_manage().
- */
- spin_lock(&dentry->d_lock);
- __managed_dentry_clear_transit(dentry);
- /*
+ * Any needed mounting has been completed and the path
+ * updated so clear DCACHE_NEED_AUTOMOUNT so we don't
+ * call ->d_automount() on rootless multi-mounts since
+ * it can lead to an incorrect ELOOP error return.
+ *
* Only clear DMANAGED_AUTOMOUNT for rootless multi-mounts and
* symlinks as in all other cases the dentry will be covered by
* an actual mount so ->d_automount() won't be called during
* the follow.
*/
+ spin_lock(&dentry->d_lock);
if ((!d_mountpoint(dentry) &&
!list_empty(&dentry->d_subdirs)) ||
(dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode)))
/* The daemon never waits. */
if (autofs4_oz_mode(sbi)) {
+ if (rcu_walk)
+ return 0;
if (!d_mountpoint(dentry))
return -EISDIR;
return 0;
dir->i_mtime = CURRENT_TIME;
- spin_lock(&autofs4_lock);
- autofs4_add_expiring(dentry);
+ spin_lock(&sbi->lookup_lock);
+ __autofs4_add_expiring(dentry);
spin_lock(&dentry->d_lock);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
- spin_unlock(&autofs4_lock);
+ spin_unlock(&sbi->lookup_lock);
return 0;
}
if (!autofs4_oz_mode(sbi))
return -EACCES;
- spin_lock(&autofs4_lock);
spin_lock(&sbi->lookup_lock);
spin_lock(&dentry->d_lock);
if (!list_empty(&dentry->d_subdirs)) {
spin_unlock(&dentry->d_lock);
spin_unlock(&sbi->lookup_lock);
- spin_unlock(&autofs4_lock);
return -ENOTEMPTY;
}
__autofs4_add_expiring(dentry);
- spin_unlock(&sbi->lookup_lock);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
- spin_unlock(&autofs4_lock);
+ spin_unlock(&sbi->lookup_lock);
if (sbi->version < 5)
autofs_clear_leaf_automount_flags(dentry);