The patch titled
Subject: mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix
has been added to the -mm tree. Its filename is
mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix
tweak comment
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Yang Shi <yang.s@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/khugepaged.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/khugepaged.c~mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix mm/khugepaged.c
--- a/mm/khugepaged.c~mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix
+++ a/mm/khugepaged.c
@@ -1674,8 +1674,8 @@ static unsigned int khugepaged_scan_mm_s
mm = mm_slot->mm;
/*
- * Not wait for semaphore to avoid long time waiting, just move
- * to the next mm on the list.
+ * Don't wait for semaphore (to avoid long wait times). Just move to
+ * the next mm on the list.
*/
if (unlikely(!down_read_trylock(&mm->mmap_sem)))
goto breakouterloop_mmap_sem;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
i-need-old-gcc.patch
mm-kmemleakc-make-cond_resched-rate-limiting-more-efficient.patch
stringh-work-around-for-increased-stack-usage-fix.patch
mm-memoryc-mark-wp_huge_pmd-inline-to-prevent-build-failure-fix.patch
arm-arch-arm-include-asm-pageh-needs-personalityh.patch
mm.patch
mm-terminate-shrink_slab-loop-if-signal-is-pending-fix.patch
include-linux-sched-mmh-uninline-mmdrop_async-etc.patch
mm-split-deferred_init_range-into-initializing-and-freeing-parts-fix.patch
mm-do-not-stall-register_shrinker-fix.patch
selftest-vm-move-128tb-mmap-boundary-test-to-generic-directory-fix.patch
list_lru-prefetch-neighboring-list-entries-before-acquiring-lock-fix.patch
mm-oom-cgroup-aware-oom-killer-fix.patch
sparc64-update-pmdp_invalidate-to-return-old-pmd-value-fix.patch
x86-mm-provide-pmdp_establish-helper-fix.patch
fs-elf-drop-map_fixed-usage-from-elf_map-checkpatch-fixes.patch
mm-thp-use-down_read_trylock-in-khugepaged-to-avoid-long-block-fix.patch
lib-ubsanc-s-missaligned-misaligned.patch
linux-next-rejects.patch
tools-objtool-makefile-dont-assume-sync-checksh-is-executable.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
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