This is a note to let you know that I've just added the patch titled
ceph: Don't forget the 'up_read(&osdc->map_sem)' if met error.
to the 3.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ceph-don-t-forget-the-up_read-osdc-map_sem-if-met-error.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 494ddd11be3e2621096bb425eed2886f8e8446d4 Mon Sep 17 00:00:00 2001
From: majianpeng <majianpeng@xxxxxxxxx>
Date: Tue, 16 Jul 2013 19:36:21 +0800
Subject: ceph: Don't forget the 'up_read(&osdc->map_sem)' if met error.
From: majianpeng <majianpeng@xxxxxxxxx>
commit 494ddd11be3e2621096bb425eed2886f8e8446d4 upstream.
Signed-off-by: Jianpeng Ma <majianpeng@xxxxxxxxx>
Reviewed-by: Sage Weil <sage@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ceph/ioctl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -196,8 +196,10 @@ static long ceph_ioctl_get_dataloc(struc
r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, len,
&dl.object_no, &dl.object_offset,
&olen);
- if (r < 0)
+ if (r < 0) {
+ up_read(&osdc->map_sem);
return -EIO;
+ }
dl.file_offset -= dl.object_offset;
dl.object_size = ceph_file_layout_object_size(ci->i_layout);
dl.block_size = ceph_file_layout_su(ci->i_layout);
Patches currently in stable-queue which might be from majianpeng@xxxxxxxxx are
queue-3.11/libceph-unregister-request-in-__map_request-failed-and-nofail-false.patch
queue-3.11/ceph-don-t-forget-the-up_read-osdc-map_sem-if-met-error.patch
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