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authorOleg Nesterov <oleg@tv-sign.ru>2008-06-06 11:31:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-06-06 11:36:22 -0700
commitaab2545fdd6641b76af0ae96456c4ca9d1e50dad (patch)
tree5fa741cea7b76283cbab237ff6909f5c6ff32752 /fs/aio.c
parent06a1578e2448112d6f635b1a458a65e36f0f97c6 (diff)
uml: activate_mm: remove the dead PF_BORROWED_MM check
use_mm() was changed to use switch_mm() instead of activate_mm(), since then nobody calls (and nobody should call) activate_mm() with PF_BORROWED_MM bit set. As Jeff Dike pointed out, we can also remove the "old != new" check, it is always true. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/aio.c')
-rw-r--r--fs/aio.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/fs/aio.c b/fs/aio.c
index b5253e77eb2..0fb3117ddd9 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -591,10 +591,6 @@ static void use_mm(struct mm_struct *mm)
atomic_inc(&mm->mm_count);
tsk->mm = mm;
tsk->active_mm = mm;
- /*
- * Note that on UML this *requires* PF_BORROWED_MM to be set, otherwise
- * it won't work. Update it accordingly if you change it here
- */
switch_mm(active_mm, mm, tsk);
task_unlock(tsk);