diff options
| author | David Hildenbrand <david@redhat.com> | 2023-08-21 19:08:46 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-25 02:20:28 +0300 |
| commit | cfeed8ffe55b37fa10286aaaa1369da00cb88440 (patch) | |
| tree | cbc7c8618364472fa49497bd220c0c26d0c64719 /mm/memory.c | |
| parent | bad5a3a42a31859705baf39c4fc92173b2716760 (diff) | |
| download | linux-cfeed8ffe55b37fa10286aaaa1369da00cb88440.tar.xz | |
mm/swap: stop using page->private on tail pages for THP_SWAP
Patch series "mm/swap: stop using page->private on tail pages for THP_SWAP
+ cleanups".
This series stops using page->private on tail pages for THP_SWAP, replaces
folio->private by folio->swap for swapcache folios, and starts using
"new_folio" for tail pages that we are splitting to remove the usage of
page->private for swapcache handling completely.
This patch (of 4):
Let's stop using page->private on tail pages, making it possible to just
unconditionally reuse that field in the tail pages of large folios.
The remaining usage of the private field for THP_SWAP is in the THP
splitting code (mm/huge_memory.c), that we'll handle separately later.
Update the THP_SWAP documentation and sanity checks in mm_types.h and
__split_huge_page_tail().
[david@redhat.com: stop using page->private on tail pages for THP_SWAP]
Link: https://lkml.kernel.org/r/6f0a82a3-6948-20d9-580b-be1dbf415701@redhat.com
Link: https://lkml.kernel.org/r/20230821160849.531668-1-david@redhat.com
Link: https://lkml.kernel.org/r/20230821160849.531668-2-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64]
Reviewed-by: Yosry Ahmed <yosryahmed@google.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c index 9d7fb721a680..d104a38e8545 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3879,7 +3879,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf) * changed. */ if (unlikely(!folio_test_swapcache(folio) || - page_private(page) != entry.val)) + page_swap_entry(page).val != entry.val)) goto out_page; /* |