From: "Thorbjørn Lind" <mtl@slowbone.net>
To: linux-kernel@vger.kernel.org
Subject: [patch] 2.5.48-bk, md raid0 fix
Date: Wed, 20 Nov 2002 02:28:47 +0100 [thread overview]
Message-ID: <3DDAE54F.4010808@slowbone.net> (raw)
Fixes the 'BUG at drivers/block/ll_rw_blk.c:19xx' when using raid0 md devices since 2.5.45...
/tul
--- a/drivers/md/raid0.c 2002-11-18 05:29:46.000000000 +0100
+++ b/drivers/md/raid0.c 2002-11-20 01:12:08.000000000 +0100
@@ -173,15 +173,14 @@
static int raid0_mergeable_bvec(request_queue_t *q, struct bio *bio, struct bio_vec *biovec)
{
mddev_t *mddev = q->queuedata;
- sector_t block;
- unsigned int chunk_size;
- unsigned int bio_sz;
-
- chunk_size = mddev->chunk_size >> 10;
- block = bio->bi_sector >> 1;
- bio_sz = (bio->bi_size + biovec->bv_len) >> 10;
-
- return (chunk_size - ((block & (chunk_size - 1)) + bio_sz)) << 10;
+ unsigned int max_size;
+
+ max_size = mddev->chunk_size - ((bio->bi_sector % (mddev->chunk_size >> 9)) << 9);
+
+ if(biovec->bv_len <= (max_size - bio->bi_size))
+ return biovec->bv_len;
+
+ return max_size - bio->bi_size;
}
static int raid0_run (mddev_t *mddev)
next reply other threads:[~2002-11-20 1:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-20 1:28 Thorbjørn Lind [this message]
2002-11-20 7:09 ` [patch] 2.5.48-bk, md raid0 fix Andrew Morton
2002-11-20 7:38 ` Thorbjørn Lind
2002-11-21 0:36 ` Neil Brown
[not found] <101840980@toto.iv>
2002-11-20 4:54 ` Peter Chubb
2002-11-20 6:26 ` Thorbjørn Lind
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