The patch titled
Subject: mm, hugetlb: add thread name and pid to SHM_HUGETLB mlock rlimit warning
has been added to the -mm tree. Its filename is
mm-hugetlb-add-thread-name-and-pid-to-shm_hugetlb-mlock-rlimit-warning.patch
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From: David Rientjes <rientjes@xxxxxxxxxx>
Subject: mm, hugetlb: add thread name and pid to SHM_HUGETLB mlock rlimit warning
Add the thread name and pid of the application that is allocating shm
segments with MAP_HUGETLB without being a part of
/proc/sys/vm/hugetlb_shm_group or having CAP_IPC_LOCK.
This identifies the application so it may be fixed by avoiding using the
deprecated exception (see Documentation/feature-removal-schedule.txt).
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hugetlbfs/inode.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff -puN fs/hugetlbfs/inode.c~mm-hugetlb-add-thread-name-and-pid-to-shm_hugetlb-mlock-rlimit-warning fs/hugetlbfs/inode.c
--- a/fs/hugetlbfs/inode.c~mm-hugetlb-add-thread-name-and-pid-to-shm_hugetlb-mlock-rlimit-warning
+++ a/fs/hugetlbfs/inode.c
@@ -944,7 +944,11 @@ struct file *hugetlb_file_setup(const ch
if (creat_flags == HUGETLB_SHMFS_INODE && !can_do_hugetlb_shm()) {
*user = current_user();
if (user_shm_lock(size, *user)) {
- printk_once(KERN_WARNING "Using mlock ulimits for SHM_HUGETLB is deprecated\n");
+ task_lock(current);
+ printk_once(KERN_WARNING
+ "%s (%d): Using mlock ulimits for SHM_HUGETLB is deprecated\n",
+ current->comm, current->pid);
+ task_unlock(current);
} else {
*user = NULL;
return ERR_PTR(-EPERM);
_
Subject: Subject: mm, hugetlb: add thread name and pid to SHM_HUGETLB mlock rlimit warning
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
origin.patch
linux-next.patch
slab-introduce-kmalloc_array.patch
mm-oom-avoid-looping-when-chosen-thread-detaches-its-mm.patch
mm-oom-fold-oom_kill_task-into-oom_kill_process.patch
mm-oom-do-not-emit-oom-killer-warning-if-chosen-thread-is-already-exiting.patch
mm-oom-introduce-independent-oom-killer-ratelimit-state.patch
mm-vmscanc-cleanup-with-s-reclaim_mode-isolate_mode.patch
pagemap-avoid-splitting-thp-when-reading-proc-pid-pagemap.patch
thp-optimize-away-unnecessary-page-table-locking.patch
thp-optimize-away-unnecessary-page-table-locking-fix.patch
pagemap-export-kpf_thp.patch
pagemap-document-kpf_thp-and-make-page-types-aware-of-it.patch
pagemap-introduce-data-structure-for-pagemap-entry.patch
rmap-anon_vma_prepare-reduce-code-duplication-by-calling-anon_vma_chain_link.patch
rmap-remove-__anon_vma_link.patch
mm-oom-force-oom-kill-on-sysrqf.patch
mm-memcg-pass-charge-order-to-oom-killer.patch
cpuset-mm-reduce-large-amounts-of-memory-barrier-related-damage-v3.patch
mm-counters-remove-task-argument-to-sync_mm_rss-and-__sync_task_rss_stat.patch
mm-counters-fold-__sync_task_rss_stat-into-sync_mm_rss.patch
mm-hugetlb-add-thread-name-and-pid-to-shm_hugetlb-mlock-rlimit-warning.patch
memcg-remove-unnecessary-thp-check-in-page-stat-accounting.patch
signal-give-send_sig_forced-more-power-to-beat-signal_unkillable.patch
signal-cosmetic-s-from_ancestor_ns-force-in-prepare_signal-paths.patch
signal-oom_kill_task-use-send_sig_forced-instead-of-force_sig.patch
signal-zap_pid_ns_processes-s-send_sig_noinfo-send_sig_forced.patch
usermodehelper-introduce-umh_completesub_info.patch
usermodehelper-implement-umh_killable.patch
usermodehelper-kill-umh_wait-renumber-umh_-constants.patch
usermodehelper-____call_usermodehelper-doesnt-need-do_exit.patch
kmod-introduce-call_modprobe-helper.patch
kmod-make-__request_module-killable.patch
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