diff options
author | Hugh Dickins <hugh.dickins@tiscali.co.uk> | 2009-09-21 20:03:37 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-22 10:17:41 -0400 |
commit | 3f96b79ad96263cc0ece7bb340cddf9b2ddfb1b3 (patch) | |
tree | 0da9828c16543164f1b055fd927ea3e222ca05e5 /include | |
parent | cdf7b3418ad5a8783efe8f9124023d9b869fec0f (diff) |
tmpfs: depend on shmem
CONFIG_SHMEM off gives you (ramfs masquerading as) tmpfs, even when
CONFIG_TMPFS is off: that's a little anomalous, and I'd intended to make
more sense of it by removing CONFIG_TMPFS altogether, always enabling its
code when CONFIG_SHMEM; but so many defconfigs have CONFIG_SHMEM on
CONFIG_TMPFS off that we'd better leave that as is.
But there is no point in asking for CONFIG_TMPFS if CONFIG_SHMEM is off:
make TMPFS depend on SHMEM, which also prevents TMPFS_POSIX_ACL
shmem_acl.o being pointlessly built into the kernel when SHMEM is off.
And a selfish change, to prevent the world from being rebuilt when I
switch between CONFIG_SHMEM on and off: the only CONFIG_SHMEM in the
header files is mm.h shmem_lock() - give that a shmem.c stub instead.
Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/mm.h | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 5409eced7aa..5946e2ff9fe 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h | |||
@@ -702,17 +702,8 @@ extern void pagefault_out_of_memory(void); | |||
702 | 702 | ||
703 | extern void show_free_areas(void); | 703 | extern void show_free_areas(void); |
704 | 704 | ||
705 | #ifdef CONFIG_SHMEM | 705 | int shmem_lock(struct file *file, int lock, struct user_struct *user); |
706 | extern int shmem_lock(struct file *file, int lock, struct user_struct *user); | ||
707 | #else | ||
708 | static inline int shmem_lock(struct file *file, int lock, | ||
709 | struct user_struct *user) | ||
710 | { | ||
711 | return 0; | ||
712 | } | ||
713 | #endif | ||
714 | struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags); | 706 | struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags); |
715 | |||
716 | int shmem_zero_setup(struct vm_area_struct *); | 707 | int shmem_zero_setup(struct vm_area_struct *); |
717 | 708 | ||
718 | #ifndef CONFIG_MMU | 709 | #ifndef CONFIG_MMU |