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| author | David Howells <dhowells@redhat.com> | 2022-03-22 22:45:26 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-22 23:57:08 +0100 |
| commit | 4e936ecc013adde12649d572352d6f37655c39b7 (patch) | |
| tree | a506fb238376a06b8ebdad887d3f0f00f7cc6aae /mm/hugetlb.c | |
| parent | mm/hugetlb: use helper macro __ATTR_RW (diff) | |
| download | linux-4e936ecc013adde12649d572352d6f37655c39b7.tar.xz linux-4e936ecc013adde12649d572352d6f37655c39b7.zip | |
mm/hugetlb.c: export PageHeadHuge()
Export PageHeadHuge() - it's used by folio_test_hugetlb() and thence by
such as folio_file_page() and folio_contains(). Matthew suggested I use
the first of those instead of doing the same calculation manually - but I
can't call it from a module.
Kirill suggested rearranging things to put it in a header, but that
introduces header dependencies because of where constants are defined.
[akpm@linux-foundation.org: s/EXPORT_SYMBOL/EXPORT_SYMBOL_GPL/, per Christoph]
Link: https://lkml.kernel.org/r/2494562.1646054576@warthog.procyon.org.uk
Link: https://lore.kernel.org/r/163707085314.3221130.14783857863702203440.stgit@warthog.procyon.org.uk/
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 369ff0791bdd..f425147e4ce3 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1855,6 +1855,7 @@ int PageHeadHuge(struct page *page_head) return page_head[1].compound_dtor == HUGETLB_PAGE_DTOR; } +EXPORT_SYMBOL_GPL(PageHeadHuge); /* * Find and lock address space (mapping) in write mode. |