From 595c22a3ad2ac55e141959ada634d4cd0aa86aad Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 29 Apr 2009 01:49:02 +0200
Subject: [PATCH] shm: page align shm size when mmap()ing it

---
 src/pulsecore/shm.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/pulsecore/shm.c b/src/pulsecore/shm.c
index b8c5f78..fe556da 100644
--- a/src/pulsecore/shm.c
+++ b/src/pulsecore/shm.c
@@ -105,7 +105,7 @@ int pa_shm_create_rw(pa_shm *m, size_t size, pa_bool_t shared, mode_t mode) {
         m->size = size;
 
 #ifdef MAP_ANONYMOUS
-        if ((m->ptr = mmap(NULL, m->size, PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, (off_t) 0)) == MAP_FAILED) {
+        if ((m->ptr = mmap(NULL, PA_PAGE_ALIGN(m->size), PROT_READ|PROT_WRITE, MAP_ANONYMOUS|MAP_PRIVATE, -1, (off_t) 0)) == MAP_FAILED) {
             pa_log("mmap() failed: %s", pa_cstrerror(errno));
             goto fail;
         }
@@ -143,7 +143,7 @@ int pa_shm_create_rw(pa_shm *m, size_t size, pa_bool_t shared, mode_t mode) {
             goto fail;
         }
 
-        if ((m->ptr = mmap(NULL, m->size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, (off_t) 0)) == MAP_FAILED) {
+        if ((m->ptr = mmap(NULL, PA_PAGE_ALIGN(m->size), PROT_READ|PROT_WRITE, MAP_SHARED, fd, (off_t) 0)) == MAP_FAILED) {
             pa_log("mmap() failed: %s", pa_cstrerror(errno));
             goto fail;
         }
@@ -291,7 +291,7 @@ int pa_shm_attach_ro(pa_shm *m, unsigned id) {
 
     m->size = (size_t) st.st_size;
 
-    if ((m->ptr = mmap(NULL, m->size, PROT_READ, MAP_SHARED, fd, (off_t) 0)) == MAP_FAILED) {
+    if ((m->ptr = mmap(NULL, PA_PAGE_ALIGN(m->size), PROT_READ, MAP_SHARED, fd, (off_t) 0)) == MAP_FAILED) {
         pa_log("mmap() failed: %s", pa_cstrerror(errno));
         goto fail;
     }
-- 
1.6.2.2