diff options
| author |   Andrew Morton <akpm@linux-foundation.org> | 2013-04-29 15:06:12 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 15:54:28 -0700 |
| commit | 250297edf83292c831fbf4504df54953c2aacfe4 (patch) | |
| tree | 48cfad4e3eff92382c600582ba1c8ea7b4671d09 | |
| parent | mm, show_mem: suppress page counts in non-blockable contexts (diff) | |
| download | wireguard-linux-250297edf83292c831fbf4504df54953c2aacfe4.tar.xz wireguard-linux-250297edf83292c831fbf4504df54953c2aacfe4.zip | |
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.h | 8 | ||||
| -rw-r--r-- | mm/shmem.c | 5 |
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); |