lkml.org 
[lkml]   [2013]   [Oct]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v7 2/3] Staging: zram: Fix decrement of variable by calling bdput()
Date
As suggested by Jerome Marchand "The code in reset_store get the block device
(bdget_disk()) but it does not put it (bdput()) when it's done using it.
The usage count is therefor incremented but never decremented."

Hence, this patch introduces a call to bdput() to decrement the variable after usage.

Cc: stable@vger.kernel.org
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
---

This revision fixes the following issues of the previous revision-
Handle more error cases

drivers/staging/zram/zram_drv.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index d640a8f..592e760 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -664,6 +664,9 @@ static ssize_t reset_store(struct device *dev,

/* Make sure all pending I/O is finished */
fsync_bdev(bdev);
+ bdput(bdev);
+ bdput(bdev->bd_holders);
+ bdput(do_reset);

zram_reset_device(zram, true);
return len;
--
1.7.9.5


\
 
 \ /
  Last update: 2013-10-30 01:01    [W:0.066 / U:0.312 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site