X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fblock%2Floop.c;h=91ebb007416c185587b22ac08e46993f09fcb7dc;hb=e1ec1b8ccdf0df6000faa8c2d985ca5f94157e5a;hp=e5a051577a5e617008f263b8cb5c9f914e1fe6a7;hpb=8268f5a7415d914fc855a86aa2284ac819dc6b2e;p=linux-2.6

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index e5a051577a..91ebb00741 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -29,7 +29,7 @@
  *
  * Maximum number of loop devices when compiled-in now selectable by passing
  * max_loop=<1-255> to the kernel on boot.
- * Erik I. Bolsø, <eriki@himolde.no>, Oct 31, 1999
+ * Erik I. Bolsø, <eriki@himolde.no>, Oct 31, 1999
  *
  * Completely rewrite request handling to be make_request_fn style and
  * non blocking, pushing work to a helper thread. Lots of fixes from
@@ -610,7 +610,7 @@ static int loop_thread(void *data)
 static int loop_switch(struct loop_device *lo, struct file *file)
 {
 	struct switch_request w;
-	struct bio *bio = bio_alloc(GFP_KERNEL, 1);
+	struct bio *bio = bio_alloc(GFP_KERNEL, 0);
 	if (!bio)
 		return -ENOMEM;
 	init_completion(&w.wait);
@@ -973,6 +973,10 @@ loop_set_status(struct loop_device *lo, const struct loop_info64 *info)
 	lo->transfer = xfer->transfer;
 	lo->ioctl = xfer->ioctl;
 
+	if ((lo->lo_flags & LO_FLAGS_AUTOCLEAR) !=
+	     (info->lo_flags & LO_FLAGS_AUTOCLEAR))
+		lo->lo_flags ^= LO_FLAGS_AUTOCLEAR;
+
 	lo->lo_encrypt_key_size = info->lo_encrypt_key_size;
 	lo->lo_init[0] = info->lo_init[0];
 	lo->lo_init[1] = info->lo_init[1];
@@ -1285,7 +1289,6 @@ static long lo_compat_ioctl(struct file *file, unsigned int cmd, unsigned long a
 	struct loop_device *lo = inode->i_bdev->bd_disk->private_data;
 	int err;
 
-	lock_kernel();
 	switch(cmd) {
 	case LOOP_SET_STATUS:
 		mutex_lock(&lo->lo_ctl_mutex);
@@ -1311,7 +1314,6 @@ static long lo_compat_ioctl(struct file *file, unsigned int cmd, unsigned long a
 		err = -ENOIOCTLCMD;
 		break;
 	}
-	unlock_kernel();
 	return err;
 }
 #endif
@@ -1333,6 +1335,10 @@ static int lo_release(struct inode *inode, struct file *file)
 
 	mutex_lock(&lo->lo_ctl_mutex);
 	--lo->lo_refcnt;
+
+	if ((lo->lo_flags & LO_FLAGS_AUTOCLEAR) && !lo->lo_refcnt)
+		loop_clr_fd(lo, inode->i_bdev);
+
 	mutex_unlock(&lo->lo_ctl_mutex);
 
 	return 0;