tree 3a0a23880832ded1160b60a93300f4248a7de91f
parent b4169525bc2336ea6581c6ff2aa88b2671e3b9f9
author Nick Piggin <npiggin@suse.de> 1178488193 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1178565174 -0700

mm: madvise avoid exclusive mmap_sem

Avoid down_write of the mmap_sem in madvise when we can help it.

Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>