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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-11-05 16:02:42 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-11-05 16:08:36 +0100 |
| commit | 8e4e4c2f53ffcb0ef746dc3b87ce1a57c5c94c7d (patch) | |
| tree | a61fbc998223d50f8b8691b9b9ced38c21072b10 /mm/huge_memory.c | |
| parent | drm/ofdrm: Cast error pointers to void __iomem * (diff) | |
| parent | Merge tag 'drm-intel-gt-next-2022-11-03' of git://anongit.freedesktop.org/drm... (diff) | |
| download | linux-8e4e4c2f53ffcb0ef746dc3b87ce1a57c5c94c7d.tar.gz linux-8e4e4c2f53ffcb0ef746dc3b87ce1a57c5c94c7d.zip | |
Merge drm/drm-next into drm-misc-next
Backmerging drm/drm-next to get the latest changes in the xlnx driver.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 1cc4a5f4791e..03fc7e5edf07 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2455,7 +2455,16 @@ static void __split_huge_page_tail(struct page *head, int tail, page_tail); page_tail->mapping = head->mapping; page_tail->index = head->index + tail; - page_tail->private = 0; + + /* + * page->private should not be set in tail pages with the exception + * of swap cache pages that store the swp_entry_t in tail pages. + * Fix up and warn once if private is unexpectedly set. + */ + if (!folio_test_swapcache(page_folio(head))) { + VM_WARN_ON_ONCE_PAGE(page_tail->private != 0, head); + page_tail->private = 0; + } /* Page flags must be visible before we make the page non-compound. */ smp_wmb(); |