diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-09-02 20:46:03 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:02:45 -0700 |
| commit | 4cd400fd1f55dde1fa430a706828042daed94c43 (patch) | |
| tree | c14239604229a1f4a250e1a75d6ba71f834e3b2d /mm/shmem.c | |
| parent | f530ed0e2d01aafc4d0e3cf8ab6b64bbdb7696a7 (diff) | |
| download | linux-4cd400fd1f55dde1fa430a706828042daed94c43.tar.gz | |
shmem: convert shmem_delete_from_page_cache() to take a folio
Remove the assertion that the page is not Compound as this function now
handles large folios correctly.
Link: https://lkml.kernel.org/r/20220902194653.1739778-8-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 3d2d35728793b9..9e851fc876016a 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -763,23 +763,22 @@ error: } /* - * Like delete_from_page_cache, but substitutes swap for page. + * Like delete_from_page_cache, but substitutes swap for @folio. */ -static void shmem_delete_from_page_cache(struct page *page, void *radswap) +static void shmem_delete_from_page_cache(struct folio *folio, void *radswap) { - struct address_space *mapping = page->mapping; + struct address_space *mapping = folio->mapping; + long nr = folio_nr_pages(folio); int error; - VM_BUG_ON_PAGE(PageCompound(page), page); - xa_lock_irq(&mapping->i_pages); - error = shmem_replace_entry(mapping, page->index, page, radswap); - page->mapping = NULL; - mapping->nrpages--; - __dec_lruvec_page_state(page, NR_FILE_PAGES); - __dec_lruvec_page_state(page, NR_SHMEM); + error = shmem_replace_entry(mapping, folio->index, folio, radswap); + folio->mapping = NULL; + mapping->nrpages -= nr; + __lruvec_stat_mod_folio(folio, NR_FILE_PAGES, -nr); + __lruvec_stat_mod_folio(folio, NR_SHMEM, -nr); xa_unlock_irq(&mapping->i_pages); - put_page(page); + folio_put(folio); BUG_ON(error); } @@ -1416,7 +1415,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc) spin_unlock_irq(&info->lock); swap_shmem_alloc(swap); - shmem_delete_from_page_cache(&folio->page, swp_to_radix_entry(swap)); + shmem_delete_from_page_cache(folio, swp_to_radix_entry(swap)); mutex_unlock(&shmem_swaplist_mutex); BUG_ON(folio_mapped(folio)); |