This patch changes the names of the boolean functions autofs4_check_mount
and autofs4_check_tree to autofs4_mount_busy and autofs4_tree_busy
respectively and alters their return codes to suit in order to aid
code readabilty.
A couple of white space cleanups are included as well.
Signed-off-by: Ian Kent <[email protected]>
--- linux-2.6.15-mm2/fs/autofs4/expire.c.expire-cleanup 2006-01-12 15:06:52.000000000 +0800
+++ linux-2.6.15-mm2/fs/autofs4/expire.c 2006-01-12 15:11:55.000000000 +0800
@@ -16,7 +16,7 @@
static unsigned long now;
-/* Check if a dentry can be expired return 1 if it can else return 0 */
+/* Check if a dentry can be expired */
static inline int autofs4_can_expire(struct dentry *dentry,
unsigned long timeout, int do_now)
{
@@ -41,14 +41,13 @@ static inline int autofs4_can_expire(str
attempts if expire fails the first time */
ino->last_used = now;
}
-
return 1;
}
-/* Check a mount point for busyness return 1 if not busy, otherwise */
-static int autofs4_check_mount(struct vfsmount *mnt, struct dentry *dentry)
+/* Check a mount point for busyness */
+static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
{
- int status = 0;
+ int status = 1;
DPRINTK("dentry %p %.*s",
dentry, (int)dentry->d_name.len, dentry->d_name.name);
@@ -65,7 +64,7 @@ static int autofs4_check_mount(struct vf
/* The big question */
if (may_umount_tree(mnt) == 0)
- status = 1;
+ status = 0;
done:
DPRINTK("returning = %d", status);
mntput(mnt);
@@ -75,30 +74,29 @@ done:
/* Check a directory tree of mount points for busyness
* The tree is not busy iff no mountpoints are busy
- * Return 1 if the tree is busy or 0 otherwise
*/
-static int autofs4_check_tree(struct vfsmount *mnt,
- struct dentry *top,
- unsigned long timeout,
- int do_now)
+static int autofs4_tree_busy(struct vfsmount *mnt,
+ struct dentry *top,
+ unsigned long timeout,
+ int do_now)
{
struct dentry *this_parent = top;
struct list_head *next;
- DPRINTK("parent %p %.*s",
+ DPRINTK("top %p %.*s",
top, (int)top->d_name.len, top->d_name.name);
/* Negative dentry - give up */
if (!simple_positive(top))
- return 0;
+ return 1;
/* Timeout of a tree mount is determined by its top dentry */
if (!autofs4_can_expire(top, timeout, do_now))
- return 0;
+ return 1;
/* Is someone visiting anywhere in the tree ? */
if (may_umount_tree(mnt))
- return 0;
+ return 1;
spin_lock(&dcache_lock);
repeat:
@@ -126,9 +124,9 @@ resume:
if (d_mountpoint(dentry)) {
/* First busy => tree busy */
- if (!autofs4_check_mount(mnt, dentry)) {
+ if (autofs4_mount_busy(mnt, dentry)) {
dput(dentry);
- return 0;
+ return 1;
}
}
@@ -144,7 +142,7 @@ resume:
}
spin_unlock(&dcache_lock);
- return 1;
+ return 0;
}
static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
@@ -188,7 +186,7 @@ resume:
goto cont;
/* Can we umount this guy */
- if (autofs4_check_mount(mnt, dentry))
+ if (!autofs4_mount_busy(mnt, dentry))
return dentry;
}
@@ -241,7 +239,7 @@ static struct dentry *autofs4_expire(str
struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
/* Negative dentry - give up */
- if ( !simple_positive(dentry) ) {
+ if (!simple_positive(dentry)) {
next = next->next;
continue;
}
@@ -259,21 +257,21 @@ static struct dentry *autofs4_expire(str
goto next;
/* Can we umount this guy */
- if (autofs4_check_mount(mnt, dentry)) {
+ if (!autofs4_mount_busy(mnt, dentry)) {
expired = dentry;
break;
}
goto next;
}
- if ( simple_empty(dentry) )
+ if (simple_empty(dentry))
goto next;
/* Case 2: tree mount, expire iff entire tree is not busy */
if (!exp_leaves) {
/* Lock the tree as we must expire as a whole */
spin_lock(&sbi->fs_lock);
- if (autofs4_check_tree(mnt, dentry, timeout, do_now)) {
+ if (!autofs4_tree_busy(mnt, dentry, timeout, do_now)) {
struct autofs_info *inf = autofs4_dentry_ino(dentry);
/* Set this flag early to catch sys_chdir and the like */
@@ -297,7 +295,7 @@ next:
next = next->next;
}
- if ( expired ) {
+ if (expired) {
DPRINTK("returning %p %.*s",
expired, (int)expired->d_name.len, expired->d_name.name);
spin_lock(&dcache_lock);
@@ -352,16 +350,16 @@ int autofs4_expire_multi(struct super_bl
return -EFAULT;
if ((dentry = autofs4_expire(sb, mnt, sbi, do_now)) != NULL) {
- struct autofs_info *de_info = autofs4_dentry_ino(dentry);
+ struct autofs_info *ino = autofs4_dentry_ino(dentry);
/* This is synchronous because it makes the daemon a
little easier */
- de_info->flags |= AUTOFS_INF_EXPIRING;
+ ino->flags |= AUTOFS_INF_EXPIRING;
ret = autofs4_wait(sbi, dentry, NFY_EXPIRE);
- de_info->flags &= ~AUTOFS_INF_EXPIRING;
+ ino->flags &= ~AUTOFS_INF_EXPIRING;
dput(dentry);
}
-
+
return ret;
}
-
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