diff options
| author | Shuai Xue <xueshuai@linux.alibaba.com> | 2025-03-12 19:28:52 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-03-17 22:07:05 -0700 |
| commit | d2734f044f84833b2c9ec1b71b542d299d35202b (patch) | |
| tree | 20472061d1eed8776c2da752d7aa80d78bf1d63c /mm | |
| parent | aaf99ac2ceb7c974f758a635723eeaf48596388e (diff) | |
mm: memory-failure: enhance comments for return value of memory_failure()
The comments for the return value of memory_failure are not complete,
supplement the comments.
Link: https://lkml.kernel.org/r/20250312112852.82415-4-xueshuai@linux.alibaba.com
Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Tested-by: Tony Luck <tony.luck@intel.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ruidong Tian <tianruidong@linux.alibaba.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory-failure.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 00d6da57ab06..b91a33fb6c69 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -2215,9 +2215,13 @@ static void kill_procs_now(struct page *p, unsigned long pfn, int flags, * Must run in process context (e.g. a work queue) with interrupts * enabled and no spinlocks held. * - * Return: 0 for successfully handled the memory error, - * -EOPNOTSUPP for hwpoison_filter() filtered the error event, - * < 0(except -EOPNOTSUPP) on failure. + * Return: + * 0 - success, + * -ENXIO - memory not managed by the kernel + * -EOPNOTSUPP - hwpoison_filter() filtered the error event, + * -EHWPOISON - the page was already poisoned, potentially + * kill process, + * other negative values - failure. */ int memory_failure(unsigned long pfn, int flags) { |