Nick Piggin 4b19de6d1c mm: tiny-shmem nommu fix ... The previous patch db203d53d4 ("mm: tiny-shmem fix lock ordering: mmap_sem vs i_mutex") to fix the lock ordering in tiny-shmem breaks shared anonymous and IPC memory on NOMMU architectures because it was using the expanding truncate to signal ramfs to allocate a physically contiguous RAM backing the inode (otherwise it is unusable for "memory mapping" it to userspace). However do_truncate is what caused the lock ordering error, due to it taking i_mutex. In this case, we can actually just call ramfs directly to allocate memory for the mapping, rather than go via truncate. Acked-by: David Howells <dhowells@redhat.com> Acked-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-10-02 15:53:13 -07:00
..
file-mmu.c	ramfs: enable splice write	2008-07-04 09:52:14 +02:00
file-nommu.c	mm: tiny-shmem nommu fix	2008-10-02 15:53:13 -07:00
inode.c	mm: bdi: add separate writeback accounting capability	2008-04-30 08:29:50 -07:00
internal.h	fs/ramfs/ extern cleanup	2008-04-29 08:06:00 -07:00
Makefile	Remove valueless definition of hard-selected RAMFS option	2007-10-17 08:42:56 -07:00