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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-02-27 19:23:31 +0000 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2024-03-06 13:04:18 -0800 |
| commit | fae7d834c43ccdb9fcecaf4d0f33145d884b3e5c (patch) | |
| tree | dea65dd075e12db5aa284c2283b993701abd3045 /include/linux/mm.h | |
| parent | mm: remove PageYoung and PageIdle definitions (diff) | |
| download | wireguard-linux-fae7d834c43ccdb9fcecaf4d0f33145d884b3e5c.tar.xz wireguard-linux-fae7d834c43ccdb9fcecaf4d0f33145d884b3e5c.zip | |
mm: add __dump_folio()
Turn __dump_page() into a wrapper around __dump_folio(). Snapshot the
page & folio into a stack variable so we don't hit BUG_ON() if an
allocation is freed under us and what was a folio pointer becomes a
pointer to a tail page.
[willy@infradead.org: fix build issue]
Link: https://lkml.kernel.org/r/ZeAKCyTn_xS3O9cE@casper.infradead.org
[willy@infradead.org: fix __dump_folio]
Link: https://lkml.kernel.org/r/ZeJJegP8zM7S9GTy@casper.infradead.org
[willy@infradead.org: fix pointer confusion]
Link: https://lkml.kernel.org/r/ZeYa00ixxC4k1ot-@casper.infradead.org
[akpm@linux-foundation.org: s/printk/pr_warn/]
Link: https://lkml.kernel.org/r/20240227192337.757313-5-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index d45eadc440f5..02547c8adda0 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2066,6 +2066,13 @@ static inline long folio_nr_pages(struct folio *folio) #endif } +/* Only hugetlbfs can allocate folios larger than MAX_ORDER */ +#ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE +#define MAX_FOLIO_NR_PAGES (1UL << PUD_ORDER) +#else +#define MAX_FOLIO_NR_PAGES MAX_ORDER_NR_PAGES +#endif + /* * compound_nr() returns the number of pages in this potentially compound * page. compound_nr() can be called on a tail page, and is defined to |