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| author | Sidhartha Kumar <sidhartha.kumar@oracle.com> | 2023-01-12 14:46:08 -0600 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-02 22:33:03 -0800 |
| commit | a6fddef49eef2cf68c23e91d73d6a6d5e2cd448f (patch) | |
| tree | c843908f790f280c946c79dac8d469a2ae8ad797 /mm/memory-failure.c | |
| parent | 595dd8185cf1db248b2be4c65ec8936de6ac87c1 (diff) | |
| download | lwn-a6fddef49eef2cf68c23e91d73d6a6d5e2cd448f.tar.gz lwn-a6fddef49eef2cf68c23e91d73d6a6d5e2cd448f.zip | |
mm/memory-failure: convert unpoison_memory() to folios
Use a folio inside unpoison_memory which replaces a compound_head() call
with a call to page_folio().
Link: https://lkml.kernel.org/r/20230112204608.80136-9-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
| -rw-r--r-- | mm/memory-failure.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 3821d64e2b2a..ba0bbfc074ee 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -2335,7 +2335,6 @@ core_initcall(memory_failure_init); */ int unpoison_memory(unsigned long pfn) { - struct page *page; struct folio *folio; struct page *p; int ret = -EBUSY; @@ -2348,7 +2347,6 @@ int unpoison_memory(unsigned long pfn) return -ENXIO; p = pfn_to_page(pfn); - page = compound_head(p); folio = page_folio(p); mutex_lock(&mf_mutex); @@ -2360,31 +2358,31 @@ int unpoison_memory(unsigned long pfn) goto unlock_mutex; } - if (!PageHWPoison(p)) { + if (!folio_test_hwpoison(folio)) { unpoison_pr_info("Unpoison: Page was already unpoisoned %#lx\n", pfn, &unpoison_rs); goto unlock_mutex; } - if (page_count(page) > 1) { + if (folio_ref_count(folio) > 1) { unpoison_pr_info("Unpoison: Someone grabs the hwpoison page %#lx\n", pfn, &unpoison_rs); goto unlock_mutex; } - if (page_mapped(page)) { + if (folio_mapped(folio)) { unpoison_pr_info("Unpoison: Someone maps the hwpoison page %#lx\n", pfn, &unpoison_rs); goto unlock_mutex; } - if (page_mapping(page)) { + if (folio_mapping(folio)) { unpoison_pr_info("Unpoison: the hwpoison page has non-NULL mapping %#lx\n", pfn, &unpoison_rs); goto unlock_mutex; } - if (PageSlab(page) || PageTable(page) || PageReserved(page)) + if (folio_test_slab(folio) || PageTable(&folio->page) || folio_test_reserved(folio)) goto unlock_mutex; ret = get_hwpoison_page(p, MF_UNPOISON); @@ -2397,7 +2395,7 @@ int unpoison_memory(unsigned long pfn) goto unlock_mutex; } } - ret = TestClearPageHWPoison(page) ? 0 : -EBUSY; + ret = folio_test_clear_hwpoison(folio) ? 0 : -EBUSY; } else if (ret < 0) { if (ret == -EHWPOISON) { ret = put_page_back_buddy(p) ? 0 : -EBUSY; @@ -2410,14 +2408,14 @@ int unpoison_memory(unsigned long pfn) count = folio_free_raw_hwp(folio, false); if (count == 0) { ret = -EBUSY; - put_page(page); + folio_put(folio); goto unlock_mutex; } } - put_page(page); + folio_put(folio); if (TestClearPageHWPoison(p)) { - put_page(page); + folio_put(folio); ret = 0; } } |