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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2022-09-02 21:46:16 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 23:02:48 +0200 |
| commit | 5739a81cf89f2bbbfff691439b8fcdf3c8d33f5d (patch) | |
| tree | 65e2c626f760cb6b9c8f2af94d009307009ea6d2 /mm/shmem.c | |
| parent | swap: add swap_cache_get_folio() (diff) | |
| download | linux-5739a81cf89f2bbbfff691439b8fcdf3c8d33f5d.tar.xz linux-5739a81cf89f2bbbfff691439b8fcdf3c8d33f5d.zip | |
shmem: eliminate struct page from shmem_swapin_folio()
Convert shmem_swapin() to return a folio and use swap_cache_get_folio(),
removing all uses of struct page in this function.
Link: https://lkml.kernel.org/r/20220902194653.1739778-21-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 | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 2bb6f5cfdc11..b685acd9f149 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1486,7 +1486,7 @@ static void shmem_pseudo_vma_destroy(struct vm_area_struct *vma) mpol_cond_put(vma->vm_policy); } -static struct page *shmem_swapin(swp_entry_t swap, gfp_t gfp, +static struct folio *shmem_swapin(swp_entry_t swap, gfp_t gfp, struct shmem_inode_info *info, pgoff_t index) { struct vm_area_struct pvma; @@ -1499,7 +1499,9 @@ static struct page *shmem_swapin(swp_entry_t swap, gfp_t gfp, page = swap_cluster_readahead(swap, gfp, &vmf); shmem_pseudo_vma_destroy(&pvma); - return page; + if (!page) + return NULL; + return page_folio(page); } /* @@ -1721,7 +1723,6 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, struct address_space *mapping = inode->i_mapping; struct shmem_inode_info *info = SHMEM_I(inode); struct mm_struct *charge_mm = vma ? vma->vm_mm : NULL; - struct page *page; struct folio *folio = NULL; swp_entry_t swap; int error; @@ -1734,8 +1735,8 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, return -EIO; /* Look it up and read it in.. */ - page = lookup_swap_cache(swap, NULL, 0); - if (!page) { + folio = swap_cache_get_folio(swap, NULL, 0); + if (!folio) { /* Or update major stats only when swapin succeeds?? */ if (fault_type) { *fault_type |= VM_FAULT_MAJOR; @@ -1743,13 +1744,12 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, count_memcg_event_mm(charge_mm, PGMAJFAULT); } /* Here we actually start the io */ - page = shmem_swapin(swap, gfp, info, index); - if (!page) { + folio = shmem_swapin(swap, gfp, info, index); + if (!folio) { error = -ENOMEM; goto failed; } } - folio = page_folio(page); /* We have to do this with folio locked to prevent races */ folio_lock(folio); |