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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-12-16 02:04:49 -0800 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-12-16 02:04:49 -0800 |
commit | 348324c5b10bcba8d9daabdfb85a6927311be34f (patch) | |
tree | d06ca3a264407a14a1f36c1b798d6dc0dc1582d8 /mm/memory-failure.c | |
parent | 1e63bd9cc43db5400a1423a7ec8266b4e7c54bd0 (diff) | |
parent | 319e2e3f63c348a9b66db4667efa73178e18b17d (diff) | |
download | linux-348324c5b10bcba8d9daabdfb85a6927311be34f.tar.bz2 |
Merge tag 'v3.13-rc4' into next
Synchronize with mainline to bring in the new keycode definitions and
new hwmon API.
Diffstat (limited to 'mm/memory-failure.c')
-rw-r--r-- | mm/memory-failure.c | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index bf3351b5115e..b7c171602ba1 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1269,7 +1269,7 @@ void memory_failure_queue(unsigned long pfn, int trapno, int flags) mf_cpu = &get_cpu_var(memory_failure_cpu); spin_lock_irqsave(&mf_cpu->lock, proc_flags); - if (kfifo_put(&mf_cpu->fifo, &entry)) + if (kfifo_put(&mf_cpu->fifo, entry)) schedule_work_on(smp_processor_id(), &mf_cpu->work); else pr_err("Memory failure: buffer overflow when queuing memory failure at %#lx\n", @@ -1423,19 +1423,6 @@ static int __get_any_page(struct page *p, unsigned long pfn, int flags) return 1; /* - * The lock_memory_hotplug prevents a race with memory hotplug. - * This is a big hammer, a better would be nicer. - */ - lock_memory_hotplug(); - - /* - * Isolate the page, so that it doesn't get reallocated if it - * was free. This flag should be kept set until the source page - * is freed and PG_hwpoison on it is set. - */ - if (get_pageblock_migratetype(p) != MIGRATE_ISOLATE) - set_migratetype_isolate(p, true); - /* * When the target page is a free hugepage, just remove it * from free hugepage list. */ @@ -1455,7 +1442,6 @@ static int __get_any_page(struct page *p, unsigned long pfn, int flags) /* Not a free page */ ret = 1; } - unlock_memory_hotplug(); return ret; } @@ -1654,15 +1640,28 @@ int soft_offline_page(struct page *page, int flags) } } + /* + * The lock_memory_hotplug prevents a race with memory hotplug. + * This is a big hammer, a better would be nicer. + */ + lock_memory_hotplug(); + + /* + * Isolate the page, so that it doesn't get reallocated if it + * was free. This flag should be kept set until the source page + * is freed and PG_hwpoison on it is set. + */ + if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE) + set_migratetype_isolate(page, true); + ret = get_any_page(page, pfn, flags); - if (ret < 0) - goto unset; - if (ret) { /* for in-use pages */ + unlock_memory_hotplug(); + if (ret > 0) { /* for in-use pages */ if (PageHuge(page)) ret = soft_offline_huge_page(page, flags); else ret = __soft_offline_page(page, flags); - } else { /* for free pages */ + } else if (ret == 0) { /* for free pages */ if (PageHuge(page)) { set_page_hwpoison_huge_page(hpage); dequeue_hwpoisoned_huge_page(hpage); @@ -1673,7 +1672,6 @@ int soft_offline_page(struct page *page, int flags) atomic_long_inc(&num_poisoned_pages); } } -unset: unset_migratetype_isolate(page, MIGRATE_MOVABLE); return ret; } |