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pstore update for v6.4-rc1 

- Revert pmsg_lock back to a normal mutex (John Stultz)
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Merge tag 'pstore-v6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull pstore update from Kees Cook:

 - Revert pmsg_lock back to a normal mutex (John Stultz)

* tag 'pstore-v6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  pstore: Revert pmsg_lock back to a normal mutex
This commit is contained in:
Linus Torvalds 2023-04-27 17:03:40 -07:00
parent 900941bea3 5239a89b06
commit 0835b5ee87
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/pstore/pmsg.c
View File

@ -7,10 +7,9 @@
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/rtmutex.h>
#include "internal.h"
static DEFINE_RT_MUTEX(pmsg_lock);
static DEFINE_MUTEX(pmsg_lock);
static ssize_t write_pmsg(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
@ -29,9 +28,9 @@ static ssize_t write_pmsg(struct file *file, const char __user *buf,
if (!access_ok(buf, count))
return -EFAULT;
rt_mutex_lock(&pmsg_lock);
mutex_lock(&pmsg_lock);
ret = psinfo->write_user(&record, buf);
rt_mutex_unlock(&pmsg_lock);
mutex_unlock(&pmsg_lock);
return ret ? ret : count;
}