Author: jhb
Date: Wed Oct 15 19:27:14 2014
New Revision: 273145
URL: https://svnweb.freebsd.org/changeset/base/273145
Log:
MFC 271721:
Explicitly specify MAP_SHARED when mapping the stats file descriptor.
Modified:
stable/10/lib/libgeom/geom_stats.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/lib/libgeom/geom_stats.c
==============================================================================
--- stable/10/lib/libgeom/geom_stats.c Wed Oct 15 19:12:05 2014
(r273144)
+++ stable/10/lib/libgeom/geom_stats.c Wed Oct 15 19:27:14 2014
(r273145)
@@ -68,7 +68,7 @@ geom_stats_resync(void)
return;
for (;;) {
p = mmap(statp, (npages + 1) * pagesize,
- PROT_READ, 0, statsfd, 0);
+ PROT_READ, MAP_SHARED, statsfd, 0);
if (p == MAP_FAILED)
break;
else
@@ -90,7 +90,7 @@ geom_stats_open(void)
return (errno);
pagesize = getpagesize();
spp = pagesize / sizeof(struct devstat);
- p = mmap(NULL, pagesize, PROT_READ, 0, statsfd, 0);
+ p = mmap(NULL, pagesize, PROT_READ, MAP_SHARED, statsfd, 0);
if (p == MAP_FAILED) {
error = errno;
close(statsfd);
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