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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2006-12-06 20:32:18 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:21 -0800 |
| commit | 6edaf68a87d17570790fd55f0c451a29ec1d6703 (patch) | |
| tree | 8ea1f3509dcf3e721919471dea67ef55a3aff78f /arch/arm26 | |
| parent | 3395ee0588795b0b3bd889c260e55959cf2b61f5 (diff) | |
| download | linux-6edaf68a87d17570790fd55f0c451a29ec1d6703.tar.gz linux-6edaf68a87d17570790fd55f0c451a29ec1d6703.tar.bz2 linux-6edaf68a87d17570790fd55f0c451a29ec1d6703.zip | |
[PATCH] mm: arch do_page_fault() vs in_atomic()
In light of the recent pagefault and filemap_copy_from_user work I've gone
through all the arch pagefault handlers to make sure the inc_preempt_count()
'feature' works as expected.
Several sections of code (including the new filemap_copy_from_user) rely on
the fact that faults do not take locks under increased preempt count.
arch/x86_64 - good
arch/powerpc - good
arch/cris - fixed
arch/i386 - good
arch/parisc - fixed
arch/sh - good
arch/sparc - good
arch/s390 - good
arch/m68k - fixed
arch/ppc - good
arch/alpha - fixed
arch/mips - good
arch/sparc64 - good
arch/ia64 - good
arch/arm - fixed
arch/um - good
arch/avr32 - good
arch/h8300 - NA
arch/m32r - good
arch/v850 - good
arch/frv - fixed
arch/m68knommu - NA
arch/arm26 - fixed
arch/sh64 - fixed
arch/xtensa - good
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/arm26')
| -rw-r--r-- | arch/arm26/mm/fault.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm26/mm/fault.c b/arch/arm26/mm/fault.c index a1f6d8a9cc32..93c0cee0fb5e 100644 --- a/arch/arm26/mm/fault.c +++ b/arch/arm26/mm/fault.c @@ -215,7 +215,7 @@ int do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) * If we're in an interrupt or have no user * context, we must not take the fault.. */ - if (in_interrupt() || !mm) + if (in_atomic() || !mm) goto no_context; down_read(&mm->mmap_sem); |