ipc/shm: fix crash if CONFIG_SHMEM is not set

[cascardo/linux.git] / fs / ramfs / file-mmu.c

diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index 183a212..12af049 100644 (file)
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -27,9 +27,17 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/ramfs.h>
+#include <linux/sched.h>
 
 #include "internal.h"
 
+static unsigned long ramfs_mmu_get_unmapped_area(struct file *file,
+               unsigned long addr, unsigned long len, unsigned long pgoff,
+               unsigned long flags)
+{
+       return current->mm->get_unmapped_area(file, addr, len, pgoff, flags);
+}
+
 const struct file_operations ramfs_file_operations = {
        .read_iter      = generic_file_read_iter,
        .write_iter     = generic_file_write_iter,
@@ -38,6 +46,7 @@ const struct file_operations ramfs_file_operations = {
        .splice_read    = generic_file_splice_read,
        .splice_write   = iter_file_splice_write,
        .llseek         = generic_file_llseek,
+       .get_unmapped_area      = ramfs_mmu_get_unmapped_area,
 };
 
 const struct inode_operations ramfs_file_inode_operations = {