]> git.karo-electronics.de Git - mv-sheeva.git/blobdiff - drivers/staging/autofs/dirhash.c
Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[mv-sheeva.git] / drivers / staging / autofs / dirhash.c
index 8f3e2b816129324730ffc3b80cea8be75110bd62..a08bd735503599b85b80c45d9152a4339f029484 100644 (file)
@@ -30,7 +30,7 @@ void autofs_update_usage(struct autofs_dirhash *dh,
                         struct autofs_dir_ent *ent)
 {
        autofs_delete_usage(ent);   /* Unlink from current position */
-       autofs_init_usage(dh,ent);  /* Relink at queue tail */
+       autofs_init_usage(dh, ent);  /* Relink at queue tail */
 }
 
 struct autofs_dir_ent *autofs_expire(struct super_block *sb,
@@ -45,17 +45,18 @@ struct autofs_dir_ent *autofs_expire(struct super_block *sb,
                struct path path;
                int umount_ok;
 
-               if ( list_empty(&dh->expiry_head) || sbi->catatonic )
+               if (list_empty(&dh->expiry_head) || sbi->catatonic)
                        return NULL;    /* No entries */
                /* We keep the list sorted by last_usage and want old stuff */
-               ent = list_entry(dh->expiry_head.next, struct autofs_dir_ent, exp);
+               ent = list_entry(dh->expiry_head.next,
+                                               struct autofs_dir_ent, exp);
                if (jiffies - ent->last_usage < timeout)
                        break;
                /* Move to end of list in case expiry isn't desirable */
                autofs_update_usage(dh, ent);
 
                /* Check to see that entry is expirable */
-               if ( ent->ino < AUTOFS_FIRST_DIR_INO )
+               if (ent->ino < AUTOFS_FIRST_DIR_INO)
                        return ent; /* Symlinks are always expirable */
 
                /* Get the dentry for the autofs subdirectory */
@@ -63,14 +64,15 @@ struct autofs_dir_ent *autofs_expire(struct super_block *sb,
 
                if (!path.dentry) {
                        /* Should only happen in catatonic mode */
-                       printk("autofs: dentry == NULL but inode range is directory, entry %s\n", ent->name);
+                       printk(KERN_DEBUG "autofs: dentry == NULL but inode \
+                               range is directory, entry %s\n", ent->name);
                        autofs_delete_usage(ent);
                        continue;
                }
 
                if (!path.dentry->d_inode) {
                        dput(path.dentry);
-                       printk("autofs: negative dentry on expiry queue: %s\n",
+                       printk(KERN_DEBUG "autofs: negative dentry on expiry queue: %s\n",
                               ent->name);
                        autofs_delete_usage(ent);
                        continue;
@@ -80,46 +82,54 @@ struct autofs_dir_ent *autofs_expire(struct super_block *sb,
                   point to the mounted-on-top root. */
                if (!S_ISDIR(path.dentry->d_inode->i_mode) ||
                    !d_mountpoint(path.dentry)) {
-                       DPRINTK(("autofs: not expirable (not a mounted directory): %s\n", ent->name));
+                       DPRINTK(("autofs: not expirable \
+                               (not a mounted directory): %s\n", ent->name));
                        continue;
                }
                path.mnt = mnt;
                path_get(&path);
-               if (!follow_down(&path)) {
+               if (!follow_down_one(&path)) {
                        path_put(&path);
-                       DPRINTK(("autofs: not expirable (not a mounted directory): %s\n", ent->name));
+                       DPRINTK(("autofs: not expirable\
+                       (not a mounted directory): %s\n", ent->name));
                        continue;
                }
-               while (d_mountpoint(path.dentry) && follow_down(&path))
-                       ;
+               follow_down(&path, false);  // TODO: need to check error
                umount_ok = may_umount(path.mnt);
                path_put(&path);
 
                if (umount_ok) {
-                       DPRINTK(("autofs: signaling expire on %s\n", ent->name));
+                       DPRINTK(("autofs: signaling expire on %s\n",
+                                                               ent->name));
                        return ent; /* Expirable! */
                }
-               DPRINTK(("autofs: didn't expire due to may_umount: %s\n", ent->name));
+
+               DPRINTK(("autofs: didn't expire due to may_umount: %s\n",
+                                                               ent->name));
        }
        return NULL;            /* No expirable entries */
 }
 
-void autofs_initialize_hash(struct autofs_dirhash *dh) {
+void autofs_initialize_hash(struct autofs_dirhash *dh)
+{
        memset(&dh->h, 0, AUTOFS_HASH_SIZE*sizeof(struct autofs_dir_ent *));
        INIT_LIST_HEAD(&dh->expiry_head);
 }
 
-struct autofs_dir_ent *autofs_hash_lookup(const struct autofs_dirhash *dh, struct qstr *name)
+struct autofs_dir_ent *autofs_hash_lookup(const struct autofs_dirhash *dh,
+                                               struct qstr *name)
 {
        struct autofs_dir_ent *dhn;
 
        DPRINTK(("autofs_hash_lookup: hash = 0x%08x, name = ", name->hash));
-       autofs_say(name->name,name->len);
+       autofs_say(name->name, name->len);
 
-       for ( dhn = dh->h[(unsigned) name->hash % AUTOFS_HASH_SIZE] ; dhn ; dhn = dhn->next ) {
-               if ( name->hash == dhn->hash &&
+       for (dhn = dh->h[(unsigned) name->hash % AUTOFS_HASH_SIZE];
+               dhn;
+               dhn = dhn->next) {
+               if (name->hash == dhn->hash &&
                     name->len == dhn->len &&
-                    !memcmp(name->name, dhn->name, name->len) )
+                    !memcmp(name->name, dhn->name, name->len))
                        break;
        }
 
@@ -131,9 +141,9 @@ void autofs_hash_insert(struct autofs_dirhash *dh, struct autofs_dir_ent *ent)
        struct autofs_dir_ent **dhnp;
 
        DPRINTK(("autofs_hash_insert: hash = 0x%08x, name = ", ent->hash));
-       autofs_say(ent->name,ent->len);
+       autofs_say(ent->name, ent->len);
 
-       autofs_init_usage(dh,ent);
+       autofs_init_usage(dh, ent);
        if (ent->dentry)
                dget(ent->dentry);
 
@@ -141,19 +151,19 @@ void autofs_hash_insert(struct autofs_dirhash *dh, struct autofs_dir_ent *ent)
        ent->next = *dhnp;
        ent->back = dhnp;
        *dhnp = ent;
-       if ( ent->next )
+       if (ent->next)
                ent->next->back = &(ent->next);
 }
 
 void autofs_hash_delete(struct autofs_dir_ent *ent)
 {
        *(ent->back) = ent->next;
-       if ( ent->next )
+       if (ent->next)
                ent->next->back = ent->back;
 
        autofs_delete_usage(ent);
 
-       if ( ent->dentry )
+       if (ent->dentry)
                dput(ent->dentry);
        kfree(ent->name);
        kfree(ent);
@@ -176,37 +186,37 @@ struct autofs_dir_ent *autofs_hash_enum(const struct autofs_dirhash *dh,
        bucket = (*ptr >> 16) - 1;
        ecount = *ptr & 0xffff;
 
-       if ( bucket < 0 ) {
+       if (bucket < 0)
                bucket = ecount = 0;
-       } 
 
        DPRINTK(("autofs_hash_enum: bucket %d, entry %d\n", bucket, ecount));
 
        ent = last ? last->next : NULL;
 
-       if ( ent ) {
+       if (ent) {
                ecount++;
        } else {
-               while  ( bucket < AUTOFS_HASH_SIZE ) {
+               while  (bucket < AUTOFS_HASH_SIZE) {
                        ent = dh->h[bucket];
-                       for ( i = ecount ; ent && i ; i-- )
+                       for (i = ecount ; ent && i ; i--)
                                ent = ent->next;
-                       
+
                        if (ent) {
                                ecount++; /* Point to *next* entry */
                                break;
                        }
-                       
+
                        bucket++; ecount = 0;
                }
        }
 
 #ifdef DEBUG
-       if ( !ent )
-               printk("autofs_hash_enum: nothing found\n");
+       if (!ent)
+               printk(KERN_DEBUG "autofs_hash_enum: nothing found\n");
        else {
-               printk("autofs_hash_enum: found hash %08x, name", ent->hash);
-               autofs_say(ent->name,ent->len);
+               printk(KERN_DEBUG "autofs_hash_enum: found hash %08x, name",
+                                                               ent->hash);
+               autofs_say(ent->name, ent->len);
        }
 #endif
 
@@ -221,9 +231,9 @@ void autofs_hash_dputall(struct autofs_dirhash *dh)
        int i;
        struct autofs_dir_ent *ent;
 
-       for ( i = 0 ; i < AUTOFS_HASH_SIZE ; i++ ) {
-               for ( ent = dh->h[i] ; ent ; ent = ent->next ) {
-                       if ( ent->dentry ) {
+       for (i = 0 ; i < AUTOFS_HASH_SIZE ; i++) {
+               for (ent = dh->h[i] ; ent ; ent = ent->next) {
+                       if (ent->dentry) {
                                dput(ent->dentry);
                                ent->dentry = NULL;
                        }
@@ -238,10 +248,10 @@ void autofs_hash_nuke(struct autofs_sb_info *sbi)
        int i;
        struct autofs_dir_ent *ent, *nent;
 
-       for ( i = 0 ; i < AUTOFS_HASH_SIZE ; i++ ) {
-               for ( ent = sbi->dirhash.h[i] ; ent ; ent = nent ) {
+       for (i = 0 ; i < AUTOFS_HASH_SIZE ; i++) {
+               for (ent = sbi->dirhash.h[i] ; ent ; ent = nent) {
                        nent = ent->next;
-                       if ( ent->dentry )
+                       if (ent->dentry)
                                dput(ent->dentry);
                        kfree(ent->name);
                        kfree(ent);