tree 3296b8809eca9c4eb6db72a4d00d2c534b6c8db2
parent 363ee17f0f405faff74d9aaf93d21d5f41d5102d
author Davidlohr Bueso <davidlohr@hp.com> 1390348156 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1390349984 -0800

mm/mlock: prepare params outside critical region

All mlock related syscalls prepare lock limits, lengths and start
parameters with the mmap_sem held.  Move this logic outside of the
critical region.  For the case of mlock, continue incrementing the
amount already locked by mm->locked_vm with the rwsem taken.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Rik van Riel <riel@redhat.com>
Reviewed-by: Michel Lespinasse <walken@google.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>