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| author | Miaohe Lin <linmiaohe@huawei.com> | 2024-07-08 11:05:44 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-12 15:52:22 -0700 |
| commit | 8a78882dac1c8c464e047a29415edb50421651ce (patch) | |
| tree | 912008c604c86f655a5fcf2b7e5eb51a8ed4f69b /include/ras | |
| parent | a5ea521250afdf3d70c72970660f44aebf56ea19 (diff) | |
| download | lwn-8a78882dac1c8c464e047a29415edb50421651ce.tar.gz lwn-8a78882dac1c8c464e047a29415edb50421651ce.zip | |
mm/memory-failure: remove obsolete MF_MSG_DIFFERENT_COMPOUND
The page cannot become compound pages again just after a folio is split as
an extra refcnt is held. So the MF_MSG_DIFFERENT_COMPOUND case is
obsolete and can be removed to get rid of this false assumption and code
burden. But add one WARN_ON() here to keep the situation clear.
Link: https://lkml.kernel.org/r/20240708030544.196919-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/ras')
| -rw-r--r-- | include/ras/ras_event.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h index 9bc707fe8819..e5f7ee0864e7 100644 --- a/include/ras/ras_event.h +++ b/include/ras/ras_event.h @@ -356,7 +356,6 @@ TRACE_EVENT(aer_event, #define MF_PAGE_TYPE \ EM ( MF_MSG_KERNEL, "reserved kernel page" ) \ EM ( MF_MSG_KERNEL_HIGH_ORDER, "high-order kernel page" ) \ - EM ( MF_MSG_DIFFERENT_COMPOUND, "different compound page after locking" ) \ EM ( MF_MSG_HUGE, "huge page" ) \ EM ( MF_MSG_FREE_HUGE, "free huge page" ) \ EM ( MF_MSG_GET_HWPOISON, "get hwpoison page" ) \ |