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From: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
To: dm-devel@redhat.com, agk@redhat.com
Cc: linux-kernel@vger.kernel.org, kusumi.tomohiro@jp.fujitsu.com
Subject: [PATCH] fix hard-coded disk header chunk size for persistent snapshot
Date: Wed, 12 May 2010 10:29:22 +0900	[thread overview]
Message-ID: <4BEA0472.1060300@jp.fujitsu.com> (raw)

Hi,

This patch fixes hard-coded value for the size of a chunk that includes
disk header for persistent snapshot. It should be changed to existing
macro NUM_SNAPSHOT_HDR_CHUNKS instead of using hard-coded value 1.

Thanks,
Tomohiro Kusumi


Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com>
---

diff -aNur linux-2.6.34-rc7.org/drivers/md/dm-snap-persistent.c linux-2.6.34-rc7/drivers/md/dm-snap-persistent.c
--- linux-2.6.34-rc7.org/drivers/md/dm-snap-persistent.c        2010-05-10 10:36:28.000000000 +0900
+++ linux-2.6.34-rc7/drivers/md/dm-snap-persistent.c    2010-05-12 09:21:50.000000000 +0900
@@ -266,7 +266,7 @@
  */
 static chunk_t area_location(struct pstore *ps, chunk_t area)
 {
-       return 1 + ((ps->exceptions_per_area + 1) * area);
+       return NUM_SNAPSHOT_HDR_CHUNKS + ((ps->exceptions_per_area + 1) * area);
 }
 
 /*

             reply	other threads:[~2010-05-12  1:29 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-12  1:29 Tomohiro Kusumi [this message]
2010-05-12  1:39 ` [PATCH] fix hard-coded disk header chunk size for persistent snapshot Alasdair G Kergon
2010-05-12  4:58   ` Mikulas Patocka
2010-05-12  5:57     ` Tomohiro Kusumi

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