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authorMichel Lespinasse <walken@google.com>2013-02-22 16:32:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 17:50:11 -0800
commit41badc15cbad0350de34408c1b0c690f9df76d4b (patch)
tree2545134398b99b37259bf6412a0bb56442f120fa /fs/aio.c
parent1869305009857cdeaabe6283bcdc2359c5784543 (diff)
downloadlinux-linaro-stable-41badc15cbad0350de34408c1b0c690f9df76d4b.tar.gz
mm: make do_mmap_pgoff return populate as a size in bytes, not as a bool
do_mmap_pgoff() rounds up the desired size to the next PAGE_SIZE multiple, however there was no equivalent code in mm_populate(), which caused issues. This could be fixed by introduced the same rounding in mm_populate(), however I think it's preferable to make do_mmap_pgoff() return populate as a size rather than as a boolean, so we don't have to duplicate the size rounding logic in mm_populate(). Signed-off-by: Michel Lespinasse <walken@google.com> Acked-by: Rik van Riel <riel@redhat.com> Tested-by: Andy Lutomirski <luto@amacapital.net> Cc: Greg Ungerer <gregungerer@westnet.com.au> Cc: David Howells <dhowells@redhat.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.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/aio.c b/fs/aio.c
index 82eec7c7b4bb..064bfbe37566 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -101,9 +101,8 @@ static int aio_setup_ring(struct kioctx *ctx)
struct aio_ring *ring;
struct aio_ring_info *info = &ctx->ring_info;
unsigned nr_events = ctx->max_reqs;
- unsigned long size;
+ unsigned long size, populate;
int nr_pages;
- bool populate;
/* Compensate for the ring buffer's head/tail overlap entry */
nr_events += 2; /* 1 is required, 2 for good luck */
@@ -150,7 +149,7 @@ static int aio_setup_ring(struct kioctx *ctx)
return -EAGAIN;
}
if (populate)
- mm_populate(info->mmap_base, info->mmap_size);
+ mm_populate(info->mmap_base, populate);
ctx->user_id = info->mmap_base;