This is a note to let you know that I've just added the patch titled mm: Fix fixup_user_fault() for MMU=n
to the 3.0-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: mm-fix-fixup_user_fault-for-mmu-n.patch and it can be found in the queue-3.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <sta...@kernel.org> know about it. >From 5c723ba5b7886909b2e430f2eae454c33f7fe5c6 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra <pet...@infradead.org> Date: Wed, 27 Jul 2011 12:17:11 +0200 Subject: mm: Fix fixup_user_fault() for MMU=n From: Peter Zijlstra <pet...@infradead.org> commit 5c723ba5b7886909b2e430f2eae454c33f7fe5c6 upstream. In commit 2efaca927f5c ("mm/futex: fix futex writes on archs with SW tracking of dirty & young") we forgot about MMU=n. This patch fixes that. Signed-off-by: Peter Zijlstra <a.p.zijls...@chello.nl> Acked-by: Benjamin Herrenschmidt <b...@kernel.crashing.org> Acked-by: David Howells <dhowe...@redhat.com> Link: http://lkml.kernel.org/r/1311761831.24752.413.camel@twins Signed-off-by: Linus Torvalds <torva...@linux-foundation.org> Cc: Mike Frysinger <vapier....@gmail.com> Signed-off-by: Greg Kroah-Hartman <gre...@suse.de> --- include/linux/mm.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -959,6 +959,8 @@ int invalidate_inode_page(struct page *p #ifdef CONFIG_MMU extern int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long address, unsigned int flags); +extern int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm, + unsigned long address, unsigned int fault_flags); #else static inline int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long address, @@ -968,6 +970,14 @@ static inline int handle_mm_fault(struct BUG(); return VM_FAULT_SIGBUS; } +static inline int fixup_user_fault(struct task_struct *tsk, + struct mm_struct *mm, unsigned long address, + unsigned int fault_flags) +{ + /* should never happen if there's no MMU */ + BUG(); + return -EFAULT; +} #endif extern int make_pages_present(unsigned long addr, unsigned long end); @@ -985,8 +995,6 @@ int get_user_pages(struct task_struct *t int get_user_pages_fast(unsigned long start, int nr_pages, int write, struct page **pages); struct page *get_dump_page(unsigned long addr); -extern int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm, - unsigned long address, unsigned int fault_flags); extern int try_to_release_page(struct page * page, gfp_t gfp_mask); extern void do_invalidatepage(struct page *page, unsigned long offset); Patches currently in stable-queue which might be from pet...@infradead.org are queue-3.0/futex-fix-regression-with-read-only-mappings.patch queue-3.0/mm-fix-fixup_user_fault-for-mmu-n.patch _______________________________________________ stable mailing list stable@linux.kernel.org http://linux.kernel.org/mailman/listinfo/stable