If RAM disk driver initialization fails due to blk_alloc_queue() faulure,
the gendisk structs stored in rd_disks[] will not be freed completely.
This patch resolves that memory leak case by doing alloc_disk() and
blk_alloc_queue() at the same time.
Signed-off-by: Akinobu Mita <[email protected]>
drivers/block/rd.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
Index: work-fault-inject/drivers/block/rd.c
===================================================================
--- work-fault-inject.orig/drivers/block/rd.c 2006-10-09 15:07:00.000000000 +0900
+++ work-fault-inject/drivers/block/rd.c 2006-10-09 15:08:21.000000000 +0900
@@ -432,6 +432,12 @@ static int __init rd_init(void)
rd_disks[i] = alloc_disk(1);
if (!rd_disks[i])
goto out;
+
+ rd_queue[i] = blk_alloc_queue(GFP_KERNEL);
+ if (!rd_queue[i]) {
+ put_disk(rd_disks[i]);
+ goto out;
+ }
}
if (register_blkdev(RAMDISK_MAJOR, "ramdisk")) {
@@ -442,10 +448,6 @@ static int __init rd_init(void)
for (i = 0; i < CONFIG_BLK_DEV_RAM_COUNT; i++) {
struct gendisk *disk = rd_disks[i];
- rd_queue[i] = blk_alloc_queue(GFP_KERNEL);
- if (!rd_queue[i])
- goto out_queue;
-
blk_queue_make_request(rd_queue[i], &rd_make_request);
blk_queue_hardsect_size(rd_queue[i], rd_blocksize);
@@ -466,8 +468,6 @@ static int __init rd_init(void)
CONFIG_BLK_DEV_RAM_COUNT, rd_size, rd_blocksize);
return 0;
-out_queue:
- unregister_blkdev(RAMDISK_MAJOR, "ramdisk");
out:
while (i--) {
put_disk(rd_disks[i]);
-
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