The patch titled
pid: replace do/while_each_task_pid with do/while_each_pid_task
has been added to the -mm tree. Its filename is
pid-replace-do-while_each_task_pid-with-do-while_each_pid_task.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: pid: replace do/while_each_task_pid with do/while_each_pid_task
From: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
There isn't any real advantage to this change except that it allows the old
functions to be removed. Which is easier on maintenance and puts the code in
a more uniform style.
Signed-off-by: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/ioprio.c | 18 ++++++++++++------
kernel/capability.c | 8 +++++---
kernel/sys.c | 40 ++++++++++++++++++++++++----------------
3 files changed, 41 insertions(+), 25 deletions(-)
diff -puN fs/ioprio.c~pid-replace-do-while_each_task_pid-with-do-while_each_pid_task fs/ioprio.c
--- a/fs/ioprio.c~pid-replace-do-while_each_task_pid-with-do-while_each_pid_task
+++ a/fs/ioprio.c
@@ -60,6 +60,7 @@ asmlinkage long sys_ioprio_set(int which
int data = IOPRIO_PRIO_DATA(ioprio);
struct task_struct *p, *g;
struct user_struct *user;
+ struct pid *pgrp;
int ret;
switch (class) {
@@ -98,12 +99,14 @@ asmlinkage long sys_ioprio_set(int which
break;
case IOPRIO_WHO_PGRP:
if (!who)
- who = process_group(current);
- do_each_task_pid(who, PIDTYPE_PGID, p) {
+ pgrp = task_pgrp(current);
+ else
+ pgrp = find_pid(who);
+ do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
ret = set_task_ioprio(p, ioprio);
if (ret)
break;
- } while_each_task_pid(who, PIDTYPE_PGID, p);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case IOPRIO_WHO_USER:
if (!who)
@@ -167,6 +170,7 @@ asmlinkage long sys_ioprio_get(int which
{
struct task_struct *g, *p;
struct user_struct *user;
+ struct pid *pgrp;
int ret = -ESRCH;
int tmpio;
@@ -182,8 +186,10 @@ asmlinkage long sys_ioprio_get(int which
break;
case IOPRIO_WHO_PGRP:
if (!who)
- who = process_group(current);
- do_each_task_pid(who, PIDTYPE_PGID, p) {
+ pgrp = task_pgrp(current);
+ else
+ pgrp = find_pid(who);
+ do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
tmpio = get_task_ioprio(p);
if (tmpio < 0)
continue;
@@ -191,7 +197,7 @@ asmlinkage long sys_ioprio_get(int which
ret = tmpio;
else
ret = ioprio_best(ret, tmpio);
- } while_each_task_pid(who, PIDTYPE_PGID, p);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case IOPRIO_WHO_USER:
if (!who)
diff -puN kernel/capability.c~pid-replace-do-while_each_task_pid-with-do-while_each_pid_task kernel/capability.c
--- a/kernel/capability.c~pid-replace-do-while_each_task_pid-with-do-while_each_pid_task
+++ a/kernel/capability.c
@@ -92,15 +92,17 @@ out:
* cap_set_pg - set capabilities for all processes in a given process
* group. We call this holding task_capability_lock and tasklist_lock.
*/
-static inline int cap_set_pg(int pgrp, kernel_cap_t *effective,
+static inline int cap_set_pg(int pgrp_nr, kernel_cap_t *effective,
kernel_cap_t *inheritable,
kernel_cap_t *permitted)
{
struct task_struct *g, *target;
int ret = -EPERM;
int found = 0;
+ struct pid *pgrp;
- do_each_task_pid(pgrp, PIDTYPE_PGID, g) {
+ pgrp = find_pid(pgrp_nr);
+ do_each_pid_task(pgrp, PIDTYPE_PGID, g) {
target = g;
while_each_thread(g, target) {
if (!security_capset_check(target, effective,
@@ -113,7 +115,7 @@ static inline int cap_set_pg(int pgrp, k
}
found = 1;
}
- } while_each_task_pid(pgrp, PIDTYPE_PGID, g);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, g);
if (!found)
ret = 0;
diff -puN kernel/sys.c~pid-replace-do-while_each_task_pid-with-do-while_each_pid_task kernel/sys.c
--- a/kernel/sys.c~pid-replace-do-while_each_task_pid-with-do-while_each_pid_task
+++ a/kernel/sys.c
@@ -589,6 +589,7 @@ asmlinkage long sys_setpriority(int whic
struct task_struct *g, *p;
struct user_struct *user;
int error = -EINVAL;
+ struct pid *pgrp;
if (which > 2 || which < 0)
goto out;
@@ -603,18 +604,21 @@ asmlinkage long sys_setpriority(int whic
read_lock(&tasklist_lock);
switch (which) {
case PRIO_PROCESS:
- if (!who)
- who = current->pid;
- p = find_task_by_pid(who);
+ if (who)
+ p = find_task_by_pid(who);
+ else
+ p = current;
if (p)
error = set_one_prio(p, niceval, error);
break;
case PRIO_PGRP:
- if (!who)
- who = process_group(current);
- do_each_task_pid(who, PIDTYPE_PGID, p) {
+ if (who)
+ pgrp = find_pid(who);
+ else
+ pgrp = task_pgrp(current);
+ do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
error = set_one_prio(p, niceval, error);
- } while_each_task_pid(who, PIDTYPE_PGID, p);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case PRIO_USER:
user = current->user;
@@ -649,6 +653,7 @@ asmlinkage long sys_getpriority(int whic
struct task_struct *g, *p;
struct user_struct *user;
long niceval, retval = -ESRCH;
+ struct pid *pgrp;
if (which > 2 || which < 0)
return -EINVAL;
@@ -656,9 +661,10 @@ asmlinkage long sys_getpriority(int whic
read_lock(&tasklist_lock);
switch (which) {
case PRIO_PROCESS:
- if (!who)
- who = current->pid;
- p = find_task_by_pid(who);
+ if (who)
+ p = find_task_by_pid(who);
+ else
+ p = current;
if (p) {
niceval = 20 - task_nice(p);
if (niceval > retval)
@@ -666,13 +672,15 @@ asmlinkage long sys_getpriority(int whic
}
break;
case PRIO_PGRP:
- if (!who)
- who = process_group(current);
- do_each_task_pid(who, PIDTYPE_PGID, p) {
+ if (who)
+ pgrp = find_pid(who);
+ else
+ pgrp = task_pgrp(current);
+ do_each_pid_task(pgrp, PIDTYPE_PGID, p) {
niceval = 20 - task_nice(p);
if (niceval > retval)
retval = niceval;
- } while_each_task_pid(who, PIDTYPE_PGID, p);
+ } while_each_pid_task(pgrp, PIDTYPE_PGID, p);
break;
case PRIO_USER:
user = current->user;
@@ -1381,7 +1389,7 @@ asmlinkage long sys_setpgid(pid_t pid, p
if (p->real_parent == group_leader) {
err = -EPERM;
- if (process_session(p) != process_session(group_leader))
+ if (task_session(p) != task_session(group_leader))
goto out;
err = -EACCES;
if (p->did_exec)
@@ -1400,7 +1408,7 @@ asmlinkage long sys_setpgid(pid_t pid, p
struct task_struct *g =
find_task_by_pid_type(PIDTYPE_PGID, pgid);
- if (!g || process_session(g) != process_session(group_leader))
+ if (!g || task_session(g) != task_session(group_leader))
goto out;
}
_
Patches currently in -mm which might be from ebiederm@xxxxxxxxxxxx are
origin.patch
revert-identifier-to-nsproxy.patch
vt-fix-comments-to-not-refer-to-kill_proc.patch
n_r3964-use-struct-pid-to-track-user-space-clients.patch
smbfs-make-conn_pid-a-struct-pid.patch
ncpfs-use-struct-pid-to-track-the-userspace-watchdog-process.patch
ncpfs-ensure-we-free-wdog_pid-on-parse_option-or-fill_inode-failure.patch
usbatm-update-to-use-the-kthread-api.patch
genapic-optimize-fix-apic-mode-setup-2.patch
genapic-always-use-physical-delivery-mode-on-8-cpus.patch
genapic-remove-es7000-workaround.patch
genapic-remove-clustered-apic-mode.patch
genapic-default-to-physical-mode-on-hotplug-cpu-kernels.patch
vt-refactor-console-sak-processing.patch
sysctl_ms_jiffies-fix-oldlen-semantics.patch
9p-use-kthread_stop-instead-of-sending-a-sigkill.patch
tty-make-__proc_set_tty-static.patch
tty-clarify-disassociate_ctty.patch
tty-fix-the-locking-for-signal-session-in-disassociate_ctty.patch
signal-use-kill_pgrp-not-kill_pg-in-the-sunos-compatibility-code.patch
signal-rewrite-kill_something_info-so-it-uses-newer-helpers.patch
pid-make-session_of_pgrp-use-struct-pid-instead-of-pid_t.patch
pid-use-struct-pid-for-talking-about-process-groups-in-exitc.patch
pid-replace-is_orphaned_pgrp-with-is_current_pgrp_orphaned.patch
tty-update-the-tty-layer-to-work-with-struct-pid.patch
pid-replace-do-while_each_task_pid-with-do-while_each_pid_task.patch
pid-remove-now-unused-do_each_task_pid-and-while_each_task_pid.patch
pid-remove-the-now-unused-kill_pg-kill_pg_info-and-__kill_pg_info.patch
sched2-sched-domain-sysctl-use-ctl_unnumbered.patch
mm-implement-swap-prefetching-use-ctl_unnumbered.patch
readahead-sysctl-parameters-use-ctl_unnumbered.patch
updated-i386-cleanup-apic-code.patch
updated-i386-rework-local-apic-calibration.patch
updated-dynticks-fix-nmi-watchdog.patch
clockevents-core-check-for-clock-event-device-handler-being-non-null-before-calling-it.patch
pidhash-temporary-debug-checks.patch
vdso-print-fatal-signals-use-ctl_unnumbered.patch
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