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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 /ipc
parent1869305009857cdeaabe6283bcdc2359c5784543 (diff)
downloadlinux-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 'ipc')
-rw-r--r--ipc/shm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index 9f047ba69e6..be3ec9ae454 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -971,7 +971,7 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
struct shm_file_data *sfd;
struct path path;
fmode_t f_mode;
- bool populate = false;
+ unsigned long populate = 0;
err = -EINVAL;
if (shmid < 0)
@@ -1078,7 +1078,7 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
invalid:
up_write(&current->mm->mmap_sem);
if (populate)
- mm_populate(addr, size);
+ mm_populate(addr, populate);
out_fput:
fput(file);