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authorLinus Torvalds <torvalds@linux-foundation.org>2021-11-25 19:13:56 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-25 19:13:56 +0100
commit79941493ff3e75219fd1d37a09b46a604e9e55ac (patch)
treedad5d2f5a3af4cb9fae72e1371e18d2832bf13ba /mm/util.c
parentMerge tag 'for-5.16/parisc-5' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
parentmm: Add functions to zero portions of a folio (diff)
downloadlinux-79941493ff3e75219fd1d37a09b46a604e9e55ac.tar.xz
linux-79941493ff3e75219fd1d37a09b46a604e9e55ac.zip
Merge tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache
Pull folio fixes from Matthew Wilcox: "In the course of preparing the folio changes for iomap for next merge window, we discovered some problems that would be nice to address now: - Renaming multi-page folios to large folios. mapping_multi_page_folio_support() is just a little too long, so we settled on mapping_large_folio_support(). That meant renaming, eg folio_test_multi() to folio_test_large(). Rename AS_THP_SUPPORT to match - I hadn't included folio wrappers for zero_user_segments(), etc. Also, multi-page^W^W large folio support is now independent of CONFIG_TRANSPARENT_HUGEPAGE, so machines with HIGHMEM always need to fall back to the out-of-line zero_user_segments(). Remove FS_THP_SUPPORT to match - The build bots finally got round to telling me that I missed a couple of architectures when adding flush_dcache_folio(). Christoph suggested that we just add linux/cacheflush.h and not rely on asm-generic/cacheflush.h" * tag 'folio-5.16b' of git://git.infradead.org/users/willy/pagecache: mm: Add functions to zero portions of a folio fs: Rename AS_THP_SUPPORT and mapping_thp_support fs: Remove FS_THP_SUPPORT mm: Remove folio_test_single mm: Rename folio_test_multi to folio_test_large Add linux/cacheflush.h
Diffstat (limited to 'mm/util.c')
-rw-r--r--mm/util.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/util.c b/mm/util.c
index e58151a61255..741ba32a43ac 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -670,7 +670,7 @@ bool folio_mapped(struct folio *folio)
{
long i, nr;
- if (folio_test_single(folio))
+ if (!folio_test_large(folio))
return atomic_read(&folio->_mapcount) >= 0;
if (atomic_read(folio_mapcount_ptr(folio)) >= 0)
return true;