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authorMatthew Wilcox (Oracle) <willy@infradead.org>2020-10-13 16:51:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-13 18:38:29 -0700
commita6de4b4873e1e352f5029b0f5b3c347427d74ab4 (patch)
treee2ec202673fae7a9f7c5f1ccd87aeb8d9577be2a /mm/swap_state.c
parent9dfc8ff34b951f83632815a87e97a625a11360f0 (diff)
mm: convert find_get_entry to return the head page
There are only four callers remaining of find_get_entry(). get_shadow_from_swap_cache() only wants to see shadow entries and doesn't care about which page is returned. Push the find_subpage() call into find_lock_entry(), find_get_incore_page() and pagecache_get_page(). [willy@infradead.org: fix oops] Link: https://lkml.kernel.org/r/20200914112738.GM6583@casper.infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Huang Ying <ying.huang@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Auld <matthew.auld@intel.com> Cc: William Kucharski <william.kucharski@oracle.com> Link: https://lkml.kernel.org/r/20200910183318.20139-7-willy@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap_state.c')
-rw-r--r--mm/swap_state.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c
index c79e2242dd04..f24f2cea4238 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -431,8 +431,10 @@ struct page *find_get_incore_page(struct address_space *mapping, pgoff_t index)
struct swap_info_struct *si;
struct page *page = find_get_entry(mapping, index);
- if (!xa_is_value(page))
+ if (!page)
return page;
+ if (!xa_is_value(page))
+ return find_subpage(page, index);
if (!shmem_mapping(mapping))
return NULL;