Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=43cbe2...
Commit: 43cbe2cbdd5320f1ac785c6f016923609831effe
Parent: 5ea139503bc7907ca0772c25bbcfb7fbb8ffc16b
Author: Andrew Morton <akpm@linux-foundation.org>
AuthorDate: Mon Dec 10 15:49:13 2007 -0800
Committer: Linus Torvalds <torvalds@woody.linux-foundation.org>
CommitDate: Mon Dec 10 19:43:54 2007 -0800
aoe: properly initialise the request_queue's backing_dev_info
AOE forgot to initialise its queue's backing_dev_info, so kernels crash.
(http://bugzilla.kernel.org/show_bug.cgi?id=9482)
Fix that and consoldate aoeblk_gdalloc()'s error handling.
Thanks be to Jon for reporting and testing.
Cc: "Ed L. Cashin" <ecashin@coraid.com>
Cc: <stable@kernel.org>
Cc: "Jon Nelson" <jnelson@jamponi.net>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/block/aoe/aoeblk.c | 26 ++++++++++++++++----------
1 files changed, 16 insertions(+), 10 deletions(-)
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index b1d00ef..ad00b3d 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -6,6 +6,7 @@
#include <linux/hdreg.h>
#include <linux/blkdev.h>
+#include <linux/backing-dev.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/genhd.h>
@@ -210,25 +211,20 @@ aoeblk_gdalloc(void *vp)
if (gd == NULL) {
printk(KERN_ERR "aoe: cannot allocate disk structure for %ld.%ld\n",
d->aoemajor, d->aoeminor);
- spin_lock_irqsave(&d->lock, flags);
- d->flags &= ~DEVFL_GDALLOC;
- spin_unlock_irqrestore(&d->lock, flags);
- return;
+ goto err;
}
d->bufpool = mempool_create_slab_pool(MIN_BUFS, buf_pool_cache);
if (d->bufpool == NULL) {
printk(KERN_ERR "aoe: cannot allocate bufpool for %ld.%ld\n",
d->aoemajor, d->aoeminor);
- put_disk(gd);
- spin_lock_irqsave(&d->lock, flags);
- d->flags &= ~DEVFL_GDALLOC;
- spin_unlock_irqrestore(&d->lock, flags);
- return;
+ goto err_disk;
}
- spin_lock_irqsave(&d->lock, flags);
blk_queue_make_request(&d->blkq, aoeblk_make_request);
+ if (bdi_init(&d->blkq.backing_dev_info))
+ goto err_mempool;
+ spin_lock_irqsave(&d->lock, flags);
gd->major = AOE_MAJOR;
gd->first_minor = d->sysminor * AOE_PARTITIONS;
gd->fops = &aoe_bdops;
@@ -246,6 +242,16 @@ aoeblk_gdalloc(void *vp)
add_disk(gd);
aoedisk_add_sysfs(d);
+ return;
+
+err_mempool:
+ mempool_destroy(d->bufpool);
+err_disk:
+ put_disk(gd);
+err:
+ spin_lock_irqsave(&d->lock, flags);
+ d->flags &= ~DEVFL_GDALLOC;
+ spin_unlock_irqrestore(&d->lock, flags);
}
void
-
To unsubscribe from this list: send the line "unsubscribe git-commits-head" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
