This is a note to let you know that I've just added the patch titled
shmem: let shared anonymous be nonlinear again
to the 2.6.38-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
shmem-let-shared-anonymous-be-nonlinear-again.patch
and it can be found in the queue-2.6.38 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From bee4c36a5cf5c9f63ce1d7372aa62045fbd16d47 Mon Sep 17 00:00:00 2001
From: Hugh Dickins <[email protected]>
Date: Tue, 22 Mar 2011 16:33:43 -0700
Subject: shmem: let shared anonymous be nonlinear again
From: Hugh Dickins <[email protected]>
commit bee4c36a5cf5c9f63ce1d7372aa62045fbd16d47 upstream.
Up to 2.6.22, you could use remap_file_pages(2) on a tmpfs file or a
shared mapping of /dev/zero or a shared anonymous mapping. In 2.6.23 we
disabled it by default, but set VM_CAN_NONLINEAR to enable it on safe
mappings. We made sure to set it in shmem_mmap() for tmpfs files, but
missed it in shmem_zero_setup() for the others. Fix that at last.
Reported-by: Kenny Simpson <[email protected]>
Signed-off-by: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
mm/shmem.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2791,5 +2791,6 @@ int shmem_zero_setup(struct vm_area_stru
fput(vma->vm_file);
vma->vm_file = file;
vma->vm_ops = &shmem_vm_ops;
+ vma->vm_flags |= VM_CAN_NONLINEAR;
return 0;
}
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.38/mm-swap-unlock-swapfile-inode-mutex-before-closing-file-on-bad-swapfiles.patch
queue-2.6.38/oom-avoid-deferring-oom-killer-if-exiting-task-is-being-traced.patch
queue-2.6.38/oom-prevent-unnecessary-oom-kills-or-kernel-panics.patch
queue-2.6.38/shmem-let-shared-anonymous-be-nonlinear-again.patch
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