Just a handy macro. This patch converts procfs user to this new macro, plus android lowmemorykiller driver will use it as well.
Signed-off-by: Anton Vorontsov anton.vorontsov@linaro.org --- fs/proc/base.c | 4 +--- include/linux/pid.h | 5 +++++ 2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/fs/proc/base.c b/fs/proc/base.c index 84b8625..e815d63 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -3367,9 +3367,7 @@ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir) ns = filp->f_dentry->d_sb->s_fs_info; iter.task = NULL; iter.tgid = filp->f_pos - TGID_OFFSET; - for (iter = next_tgid(ns, iter); - iter.task; - iter.tgid += 1, iter = next_tgid(ns, iter)) { + for_each_tgid(ns, iter) { if (has_pid_permissions(ns, iter.task, 2)) __filldir = filldir; else diff --git a/include/linux/pid.h b/include/linux/pid.h index 33e350b..da87cae 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -206,4 +206,9 @@ struct tgid_iter {
struct tgid_iter next_tgid(struct pid_namespace *ns, struct tgid_iter iter);
+#define for_each_tgid(ns, iter) \ + for (iter = next_tgid(ns, iter); \ + iter.task; \ + iter.tgid += 1, iter = next_tgid(ns, iter)) \ + #endif /* _LINUX_PID_H */