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| author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2012-10-08 16:32:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 16:22:52 +0900 |
| commit | e3b4126c556ca3a07699adf202d44bed3f453638 (patch) | |
| tree | b2eb0c6082dffc1e9a2629d8847a16f66cdd1345 /mm/huge_memory.c | |
| parent | 74c08f982674cfd5dfeb2702d631db9bcdabf788 (diff) | |
| download | lwn-e3b4126c556ca3a07699adf202d44bed3f453638.tar.gz lwn-e3b4126c556ca3a07699adf202d44bed3f453638.zip | |
thp: khugepaged_prealloc_page() forgot to reset the page alloc indicator
If NUMA is enabled, the indicator is not reset if the previous page
request failed, ausing us to trigger the BUG_ON() in
khugepaged_alloc_page().
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 7cf8b0ec11ec..7153e0d18670 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1797,6 +1797,7 @@ static bool khugepaged_prealloc_page(struct page **hpage, bool *wait) return false; *wait = false; + *hpage = NULL; khugepaged_alloc_sleep(); } else if (*hpage) { put_page(*hpage); |