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authorAndrew Morton <akpm@linux-foundation.org>2013-04-30 02:06:12 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 02:54:28 +0400
commit250297edf83292c831fbf4504df54953c2aacfe4 (patch)
tree48cfad4e3eff92382c600582ba1c8ea7b4671d09
parent4b59e6c4730978679b414a8da61514a2518da512 (diff)
downloadlinux-250297edf83292c831fbf4504df54953c2aacfe4.tar.xz
mm/shmem.c: remove an ifdef
Create a CONFIG_MMU=y stub for ramfs_nommu_expand_for_mapping() in the usual fashion. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Wolfram Sang <wsa@the-dreams.de> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/ramfs.h8
-rw-r--r--mm/shmem.c5
2 files changed, 8 insertions, 5 deletions
diff --git a/include/linux/ramfs.h b/include/linux/ramfs.h
index 5bf5500db83d..69e37c2d1ea5 100644
--- a/include/linux/ramfs.h
+++ b/include/linux/ramfs.h
@@ -6,7 +6,13 @@ struct inode *ramfs_get_inode(struct super_block *sb, const struct inode *dir,
extern struct dentry *ramfs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data);
-#ifndef CONFIG_MMU
+#ifdef CONFIG_MMU
+static inline int
+ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize)
+{
+ return 0;
+}
+#else
extern int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize);
extern unsigned long ramfs_nommu_get_unmapped_area(struct file *file,
unsigned long addr,
diff --git a/mm/shmem.c b/mm/shmem.c
index 1c44af71fcf5..39b2a0b86fe8 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -25,6 +25,7 @@
#include <linux/init.h>
#include <linux/vfs.h>
#include <linux/mount.h>
+#include <linux/ramfs.h>
#include <linux/pagemap.h>
#include <linux/file.h>
#include <linux/mm.h>
@@ -2830,8 +2831,6 @@ out4:
* effectively equivalent, but much lighter weight.
*/
-#include <linux/ramfs.h>
-
static struct file_system_type shmem_fs_type = {
.name = "tmpfs",
.mount = ramfs_mount,
@@ -2931,11 +2930,9 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
d_instantiate(path.dentry, inode);
inode->i_size = size;
clear_nlink(inode); /* It is unlinked */
-#ifndef CONFIG_MMU
res = ERR_PTR(ramfs_nommu_expand_for_mapping(inode, size));
if (IS_ERR(res))
goto put_dentry;
-#endif
res = alloc_file(&path, FMODE_WRITE | FMODE_READ,
&shmem_file_operations);