mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-04-09 14:45:27 +00:00
Code Issues Packages Projects Releases Wiki Activity

mm: memory-failure: enhance comments for return value of memory_failure()

Browse Source 
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>
This commit is contained in:
Shuai Xue 2025-03-12 19:28:52 +08:00 committed by Andrew Morton
parent aaf99ac2ce
commit d2734f044f
1 changed files with 7 additions and 3 deletions

10
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)
{