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Filesystem data/metadata present the most tricky-to-isolate pages.
It requires careful code review and stress testing to get them right.
The fs/device filter helps to target the stress tests to some specific
filesystem pages. The filter condition is block device's major/minor
numbers:
- corrupt-filter-dev-major
- corrupt-filter-dev-minor
When specified (non -1), only page cache pages that belong to that
device will be poisoned.
The filters are checked reliably on the locked and refcounted page.
Haicheng: clear PG_hwpoison and drop bad page count if filter not OK
AK: Add documentation
CC: Haicheng Li <haicheng.li@intel.com>
CC: Nick Piggin <npiggin@suse.de>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
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| .. | ||
| .gitignore | ||
| 00-INDEX | ||
| active_mm.txt | ||
| balance | ||
| hugetlbpage.txt | ||
| hwpoison.txt | ||
| ksm.txt | ||
| locking | ||
| Makefile | ||
| map_hugetlb.c | ||
| numa | ||
| numa_memory_policy.txt | ||
| overcommit-accounting | ||
| page-types.c | ||
| page_migration | ||
| pagemap.txt | ||
| slabinfo.c | ||
| slub.txt | ||
| unevictable-lru.txt | ||