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authorMichel Lespinasse <walken@google.com>2011-01-31 17:03:41 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-02-02 10:20:50 +1100
commitfdf4c587a793ba87935e38e7f25a9540bc9a7b95 (patch)
treec134f1772c46e2c5214550aaf08c58b36d755a55 /firmware
parent69bc70d4f97ce82153bed0afc9f432700c60390b (diff)
mlock: operate on any regions with protection != PROT_NONE
As Tao Ma noticed, change 5ecfda0 breaks blktrace. This is because blktrace mmaps a file with PROT_WRITE permissions but without PROT_READ, so my attempt to not unnecessarity break COW during mlock ended up causing mlock to fail with a permission problem. I am proposing to let mlock ignore vma protection in all cases except PROT_NONE. In particular, mlock should not fail for PROT_WRITE regions (as in the blktrace case, which broke at 5ecfda0) or for PROT_EXEC regions (which seem to me like they were always broken). Signed-off-by: Michel Lespinasse <walken@google.com> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'firmware')
0 files changed, 0 insertions, 0 deletions