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Commit 38c4c97c authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Jonathan Corbet
Browse files

x86-mce: BKL pushdown 



Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 3e0420f0

arch/x86/kernel/cpu/mcheck/mce_64.c

+4 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/smp_lock.h>

#include <linux/string.h>

#include <linux/rcupdate.h>

#include <linux/kallsyms.h>
@@ -527,10 +528,12 @@ static int open_exclu; /* already open exclusive? */ 


static int mce_open(struct inode *inode, struct file *file)

{

	lock_kernel();

	spin_lock(&mce_state_lock);



	if (open_exclu || (open_count && (file->f_flags & O_EXCL))) {

		spin_unlock(&mce_state_lock);

		unlock_kernel();

		return -EBUSY;

	}
@@ -539,6 +542,7 @@ static int mce_open(struct inode *inode, struct file *file) 
	open_count++;



	spin_unlock(&mce_state_lock);

	unlock_kernel();



	return nonseekable_open(inode, file);

}