diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-07-30 17:16:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-07-30 17:16:36 -0700 |
| commit | 4d0bd657d77d599307649aa03991b05e3ddef059 (patch) | |
| tree | a1b028afe393695ea8ccbe4a2ef7742b94d82ef7 /mm/memory-failure.c | |
| parent | 26bcd8b72563b4c54892c4c2a409f6656fb8ae8b (diff) | |
| parent | e0198b290dcd8313bdf313a0d083033d5c01d761 (diff) | |
Merge branch 'akpm' (patches from Andrew Morton)
Merge fixes from Andrew Morton:
"10 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
Josh has moved
kexec: export free_huge_page to VMCOREINFO
mm: fix filemap.c pagecache_get_page() kernel-doc warnings
mm: debugfs: move rounddown_pow_of_two() out from do_fault path
memcg: oom_notify use-after-free fix
hwpoison: call action_result() in failure path of hwpoison_user_mappings()
hwpoison: fix hugetlbfs/thp precheck in hwpoison_user_mappings()
rapidio/tsi721_dma: fix failure to obtain transaction descriptor
mm, thp: do not allow thp faults to avoid cpuset restrictions
mm/page-writeback.c: fix divide by zero in bdi_dirty_limits()
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 7211a73ba14..a013bc94ebb 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -895,7 +895,13 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn, struct page *hpage = *hpagep; struct page *ppage; - if (PageReserved(p) || PageSlab(p) || !PageLRU(p)) + /* + * Here we are interested only in user-mapped pages, so skip any + * other types of pages. + */ + if (PageReserved(p) || PageSlab(p)) + return SWAP_SUCCESS; + if (!(PageLRU(hpage) || PageHuge(p))) return SWAP_SUCCESS; /* @@ -905,8 +911,10 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn, if (!page_mapped(hpage)) return SWAP_SUCCESS; - if (PageKsm(p)) + if (PageKsm(p)) { + pr_err("MCE %#lx: can't handle KSM pages.\n", pfn); return SWAP_FAIL; + } if (PageSwapCache(p)) { printk(KERN_ERR @@ -1229,7 +1237,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags) */ if (hwpoison_user_mappings(p, pfn, trapno, flags, &hpage) != SWAP_SUCCESS) { - printk(KERN_ERR "MCE %#lx: cannot unmap page, give up\n", pfn); + action_result(pfn, "unmapping failed", IGNORED); res = -EBUSY; goto out; } |