diff options
Diffstat (limited to 'fs/autofs4')
| -rw-r--r-- | fs/autofs4/expire.c | 54 |
1 files changed, 26 insertions, 28 deletions
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index dc39589df165..bcc17f533699 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -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(struct dentry *dentry, 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 vfsmount *mnt, struct dentry *dentry) /* 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(struct super_block *sb, 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(struct super_block *sb, 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_block *sb, struct vfsmount *mnt, 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; } |