From 3f96b79ad96263cc0ece7bb340cddf9b2ddfb1b3 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Mon, 21 Sep 2009 17:03:37 -0700 Subject: 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 Acked-by: Matt Mackall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'fs') diff --git a/fs/Kconfig b/fs/Kconfig index 455aa207e67e..d4bf8caad8d0 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -109,6 +109,7 @@ source "fs/sysfs/Kconfig" config TMPFS bool "Virtual memory file system support (former shm fs)" + depends on SHMEM help Tmpfs is a file system which keeps all files in virtual memory. -- cgit v1.2.2