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Diffstat (limited to 'fs/autofs4/expire.c')
-rw-r--r--fs/autofs4/expire.c84
1 files changed, 45 insertions, 39 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 1cebc3c52fa5..9510d8d2e9cd 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -1,16 +1,12 @@
-/* -*- c -*- --------------------------------------------------------------- *
- *
- * linux/fs/autofs/expire.c
- *
- * Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
- * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
- * Copyright 2001-2006 Ian Kent <raven@themaw.net>
+/*
+ * Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
+ * Copyright 1999-2000 Jeremy Fitzhardinge <jeremy@goop.org>
+ * Copyright 2001-2006 Ian Kent <raven@themaw.net>
*
* This file is part of the Linux kernel and is made available under
* the terms of the GNU General Public License, version 2, or at your
* option, any later version, incorporated herein by reference.
- *
- * ------------------------------------------------------------------------- */
+ */
#include "autofs_i.h"
@@ -18,7 +14,7 @@ static unsigned long now;
/* Check if a dentry can be expired */
static inline int autofs4_can_expire(struct dentry *dentry,
- unsigned long timeout, int do_now)
+ unsigned long timeout, int do_now)
{
struct autofs_info *ino = autofs4_dentry_ino(dentry);
@@ -41,7 +37,7 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
struct path path = {.mnt = mnt, .dentry = dentry};
int status = 1;
- DPRINTK("dentry %p %pd", dentry, dentry);
+ pr_debug("dentry %p %pd\n", dentry, dentry);
path_get(&path);
@@ -58,14 +54,16 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
/* Update the expiry counter if fs is busy */
if (!may_umount_tree(path.mnt)) {
- struct autofs_info *ino = autofs4_dentry_ino(top);
+ struct autofs_info *ino;
+
+ ino = autofs4_dentry_ino(top);
ino->last_used = jiffies;
goto done;
}
status = 0;
done:
- DPRINTK("returning = %d", status);
+ pr_debug("returning = %d\n", status);
path_put(&path);
return status;
}
@@ -74,7 +72,7 @@ done:
* Calculate and dget next entry in the subdirs list under root.
*/
static struct dentry *get_next_positive_subdir(struct dentry *prev,
- struct dentry *root)
+ struct dentry *root)
{
struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb);
struct list_head *next;
@@ -121,7 +119,7 @@ cont:
* Calculate and dget next entry in top down tree traversal.
*/
static struct dentry *get_next_positive_dentry(struct dentry *prev,
- struct dentry *root)
+ struct dentry *root)
{
struct autofs_sb_info *sbi = autofs4_sbi(root->d_sb);
struct list_head *next;
@@ -187,15 +185,17 @@ again:
* autofs submounts.
*/
static int autofs4_direct_busy(struct vfsmount *mnt,
- struct dentry *top,
- unsigned long timeout,
- int do_now)
+ struct dentry *top,
+ unsigned long timeout,
+ int do_now)
{
- DPRINTK("top %p %pd", top, top);
+ pr_debug("top %p %pd\n", top, top);
/* If it's busy update the expiry counters */
if (!may_umount_tree(mnt)) {
- struct autofs_info *ino = autofs4_dentry_ino(top);
+ struct autofs_info *ino;
+
+ ino = autofs4_dentry_ino(top);
if (ino)
ino->last_used = jiffies;
return 1;
@@ -208,7 +208,8 @@ static int autofs4_direct_busy(struct vfsmount *mnt,
return 0;
}
-/* Check a directory tree of mount points for busyness
+/*
+ * Check a directory tree of mount points for busyness
* The tree is not busy iff no mountpoints are busy
*/
static int autofs4_tree_busy(struct vfsmount *mnt,
@@ -219,7 +220,7 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
struct autofs_info *top_ino = autofs4_dentry_ino(top);
struct dentry *p;
- DPRINTK("top %p %pd", top, top);
+ pr_debug("top %p %pd\n", top, top);
/* Negative dentry - give up */
if (!simple_positive(top))
@@ -227,7 +228,7 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
p = NULL;
while ((p = get_next_positive_dentry(p, top))) {
- DPRINTK("dentry %p %pd", p, p);
+ pr_debug("dentry %p %pd\n", p, p);
/*
* Is someone visiting anywhere in the subtree ?
@@ -273,11 +274,11 @@ static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
{
struct dentry *p;
- DPRINTK("parent %p %pd", parent, parent);
+ pr_debug("parent %p %pd\n", parent, parent);
p = NULL;
while ((p = get_next_positive_dentry(p, parent))) {
- DPRINTK("dentry %p %pd", p, p);
+ pr_debug("dentry %p %pd\n", p, p);
if (d_mountpoint(p)) {
/* Can we umount this guy */
@@ -362,7 +363,7 @@ static struct dentry *should_expire(struct dentry *dentry,
* offset (autofs-5.0+).
*/
if (d_mountpoint(dentry)) {
- DPRINTK("checking mountpoint %p %pd", dentry, dentry);
+ pr_debug("checking mountpoint %p %pd\n", dentry, dentry);
/* Can we umount this guy */
if (autofs4_mount_busy(mnt, dentry))
@@ -375,7 +376,7 @@ static struct dentry *should_expire(struct dentry *dentry,
}
if (d_really_is_positive(dentry) && d_is_symlink(dentry)) {
- DPRINTK("checking symlink %p %pd", dentry, dentry);
+ pr_debug("checking symlink %p %pd\n", dentry, dentry);
/*
* A symlink can't be "busy" in the usual sense so
* just check last used for expire timeout.
@@ -404,6 +405,7 @@ static struct dentry *should_expire(struct dentry *dentry,
} else {
/* Path walk currently on this dentry? */
struct dentry *expired;
+
ino_count = atomic_read(&ino->count) + 1;
if (d_count(dentry) > ino_count)
return NULL;
@@ -471,7 +473,7 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
return NULL;
found:
- DPRINTK("returning %p %pd", expired, expired);
+ pr_debug("returning %p %pd\n", expired, expired);
ino->flags |= AUTOFS_INF_EXPIRING;
smp_mb();
ino->flags &= ~AUTOFS_INF_NO_RCU;
@@ -503,12 +505,12 @@ int autofs4_expire_wait(struct dentry *dentry, int rcu_walk)
if (ino->flags & AUTOFS_INF_EXPIRING) {
spin_unlock(&sbi->fs_lock);
- DPRINTK("waiting for expire %p name=%pd", dentry, dentry);
+ pr_debug("waiting for expire %p name=%pd\n", dentry, dentry);
status = autofs4_wait(sbi, dentry, NFY_NONE);
wait_for_completion(&ino->expire_complete);
- DPRINTK("expire done status=%d", status);
+ pr_debug("expire done status=%d\n", status);
if (d_unhashed(dentry))
return -EAGAIN;
@@ -522,21 +524,22 @@ int autofs4_expire_wait(struct dentry *dentry, int rcu_walk)
/* Perform an expiry operation */
int autofs4_expire_run(struct super_block *sb,
- struct vfsmount *mnt,
- struct autofs_sb_info *sbi,
- struct autofs_packet_expire __user *pkt_p)
+ struct vfsmount *mnt,
+ struct autofs_sb_info *sbi,
+ struct autofs_packet_expire __user *pkt_p)
{
struct autofs_packet_expire pkt;
struct autofs_info *ino;
struct dentry *dentry;
int ret = 0;
- memset(&pkt,0,sizeof pkt);
+ memset(&pkt, 0, sizeof(pkt));
pkt.hdr.proto_version = sbi->version;
pkt.hdr.type = autofs_ptype_expire;
- if ((dentry = autofs4_expire_indirect(sb, mnt, sbi, 0)) == NULL)
+ dentry = autofs4_expire_indirect(sb, mnt, sbi, 0);
+ if (!dentry)
return -EAGAIN;
pkt.len = dentry->d_name.len;
@@ -544,7 +547,7 @@ int autofs4_expire_run(struct super_block *sb,
pkt.name[pkt.len] = '\0';
dput(dentry);
- if ( copy_to_user(pkt_p, &pkt, sizeof(struct autofs_packet_expire)) )
+ if (copy_to_user(pkt_p, &pkt, sizeof(struct autofs_packet_expire)))
ret = -EFAULT;
spin_lock(&sbi->fs_lock);
@@ -573,7 +576,8 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
struct autofs_info *ino = autofs4_dentry_ino(dentry);
/* This is synchronous because it makes the daemon a
- little easier */
+ * little easier
+ */
ret = autofs4_wait(sbi, dentry, NFY_EXPIRE);
spin_lock(&sbi->fs_lock);
@@ -588,8 +592,10 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
return ret;
}
-/* Call repeatedly until it returns -EAGAIN, meaning there's nothing
- more to be done */
+/*
+ * Call repeatedly until it returns -EAGAIN, meaning there's nothing
+ * more to be done.
+ */
int autofs4_expire_multi(struct super_block *sb, struct vfsmount *mnt,
struct autofs_sb_info *sbi, int __user *arg)
{
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.