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| author | Eric W. Biederman <ebiederm@xmission.com> | 2006-10-02 02:17:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 07:57:15 -0700 |
| commit | f40f50d3bb33b52dfd550ca80be7daaddad21883 (patch) | |
| tree | 4197df6e1da9e986dc6a1a6cb507844ad0ae53fe /kernel/pid.c | |
| parent | 3fbc96486459324e182717b03c50c90c880be6ec (diff) | |
| download | lwn-f40f50d3bb33b52dfd550ca80be7daaddad21883.tar.gz lwn-f40f50d3bb33b52dfd550ca80be7daaddad21883.zip | |
[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>
Diffstat (limited to 'kernel/pid.c')
| -rw-r--r-- | kernel/pid.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/pid.c b/kernel/pid.c index 89107b7481af..e4779bbb2058 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -149,19 +149,20 @@ static int alloc_pidmap(struct pspace *pspace) 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 @@ struct pid *find_ge_pid(int nr) pid = find_pid(nr); if (pid) break; - nr = next_pidmap(nr); + nr = next_pidmap(&init_pspace, nr); } while (nr > 0); return pid; |