[PATCH] Use struct pspace in next_pidmap and find_ge_pid
This updates my proc: readdir race fix (take 3) patch
to account for the changes made by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
to introduce struct pspace.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/kernel/pid.c b/kernel/pid.c
index 89107b7..e4779bb 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -149,19 +149,20 @@
return -1;
}
-static int next_pidmap(int last)
+static int next_pidmap(struct pspace *pspace, int last)
{
int offset;
- struct pidmap *map;
+ struct pidmap *map, *end;
offset = (last + 1) & BITS_PER_PAGE_MASK;
- map = &pidmap_array[(last + 1)/BITS_PER_PAGE];
- for (; map < &pidmap_array[PIDMAP_ENTRIES]; map++, offset = 0) {
+ map = &pspace->pidmap[(last + 1)/BITS_PER_PAGE];
+ end = &pspace->pidmap[PIDMAP_ENTRIES];
+ for (; map < end; map++, offset = 0) {
if (unlikely(!map->page))
continue;
offset = find_next_bit((map)->page, BITS_PER_PAGE, offset);
if (offset < BITS_PER_PAGE)
- return mk_pid(map, offset);
+ return mk_pid(pspace, map, offset);
}
return -1;
}
@@ -338,7 +339,7 @@
pid = find_pid(nr);
if (pid)
break;
- nr = next_pidmap(nr);
+ nr = next_pidmap(&init_pspace, nr);
} while (nr > 0);
return pid;