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-rw-r--r--fs/open.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/open.c b/fs/open.c
index b6542516a0ca..2fac58c51910 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -24,6 +24,7 @@
#include <linux/personality.h>
#include <linux/pagemap.h>
#include <linux/syscalls.h>
+#include <linux/rcupdate.h>
#include <asm/unistd.h>
@@ -930,9 +931,8 @@ void fastcall fd_install(unsigned int fd, struct file * file)
struct fdtable *fdt;
spin_lock(&files->file_lock);
fdt = files_fdtable(files);
- if (unlikely(fdt->fd[fd] != NULL))
- BUG();
- fdt->fd[fd] = file;
+ BUG_ON(fdt->fd[fd] != NULL);
+ rcu_assign_pointer(fdt->fd[fd], file);
spin_unlock(&files->file_lock);
}
@@ -1024,7 +1024,7 @@ asmlinkage long sys_close(unsigned int fd)
filp = fdt->fd[fd];
if (!filp)
goto out_unlock;
- fdt->fd[fd] = NULL;
+ rcu_assign_pointer(fdt->fd[fd], NULL);
FD_CLR(fd, fdt->close_on_exec);
__put_unused_fd(files, fd);
spin_unlock(&files->file_lock);