提交 38c4c97c 编写于 作者: A Arnd Bergmann 提交者: Jonathan Corbet

x86-mce: BKL pushdown

Signed-off-by: NArnd Bergmann <arnd@arndb.de>
上级 3e0420f0
......@@ -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);
}
......
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