diff options
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 37feb9fec228..5c8f7e08928d 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -208,7 +208,7 @@ static int kill_proc_ao(struct task_struct *t, unsigned long addr, int trapno, * Don't use force here, it's convenient if the signal * can be temporarily blocked. * This could cause a loop when the user sets SIGBUS - * to SIG_IGN, but hopefully noone will do that? + * to SIG_IGN, but hopefully no one will do that? */ ret = send_sig_info(SIGBUS, &si, t); /* synchronous? */ if (ret < 0) @@ -239,7 +239,11 @@ void shake_page(struct page *p, int access) if (access) { int nr; do { - nr = shrink_slab(1000, GFP_KERNEL, 1000); + struct shrink_control shrink = { + .gfp_mask = GFP_KERNEL, + }; + + nr = shrink_slab(&shrink, 1000, 1000); if (page_count(p) == 1) break; } while (nr > 10); @@ -429,7 +433,7 @@ static void collect_procs_file(struct page *page, struct list_head *to_kill, */ read_lock(&tasklist_lock); - spin_lock(&mapping->i_mmap_lock); + mutex_lock(&mapping->i_mmap_mutex); for_each_process(tsk) { pgoff_t pgoff = page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT); @@ -449,7 +453,7 @@ static void collect_procs_file(struct page *page, struct list_head *to_kill, add_to_kill(tsk, page, vma, to_kill, tkc); } } - spin_unlock(&mapping->i_mmap_lock); + mutex_unlock(&mapping->i_mmap_mutex); read_unlock(&tasklist_lock); } @@ -634,7 +638,7 @@ static int me_pagecache_dirty(struct page *p, unsigned long pfn) * when the page is reread or dropped. If an * application assumes it will always get error on * fsync, but does other operations on the fd before - * and the page is dropped inbetween then the error + * and the page is dropped between then the error * will not be properly reported. * * This can already happen even without hwpoisoned @@ -728,7 +732,7 @@ static int me_huge_page(struct page *p, unsigned long pfn) * The table matches them in order and calls the right handler. * * This is quite tricky because we can access page at any time - * in its live cycle, so all accesses have to be extremly careful. + * in its live cycle, so all accesses have to be extremely careful. * * This is not complete. More states could be added. * For any missing state don't attempt recovery. @@ -1440,16 +1444,12 @@ int soft_offline_page(struct page *page, int flags) */ ret = invalidate_inode_page(page); unlock_page(page); - /* - * Drop count because page migration doesn't like raised - * counts. The page could get re-allocated, but if it becomes - * LRU the isolation will just fail. * RED-PEN would be better to keep it isolated here, but we * would need to fix isolation locking first. */ - put_page(page); if (ret == 1) { + put_page(page); ret = 0; pr_info("soft_offline: %#lx: invalidated\n", pfn); goto done; @@ -1461,6 +1461,11 @@ int soft_offline_page(struct page *page, int flags) * handles a large number of cases for us. */ ret = isolate_lru_page(page); + /* + * Drop page reference which is came from get_any_page() + * successful isolate_lru_page() already took another one. + */ + put_page(page); if (!ret) { LIST_HEAD(pagelist); |