From: Pratyush Yadav shmem_inode_acct_blocks(), shmem_recalc_inode(), and shmem_add_to_page_cache() are used by shmem_alloc_and_add_folio(). This functionality will also be used in the future by Live Update Orchestrator (LUO) to recreate memfd files after a live update. Signed-off-by: Pratyush Yadav Signed-off-by: Pasha Tatashin --- mm/internal.h | 6 ++++++ mm/shmem.c | 10 +++++----- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/mm/internal.h b/mm/internal.h index 45b725c3dc03..5cf487ee6f83 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -1566,6 +1566,12 @@ void __meminit __init_page_from_nid(unsigned long pfn, int nid); unsigned long shrink_slab(gfp_t gfp_mask, int nid, struct mem_cgroup *memcg, int priority); +int shmem_add_to_page_cache(struct folio *folio, + struct address_space *mapping, + pgoff_t index, void *expected, gfp_t gfp); +int shmem_inode_acct_blocks(struct inode *inode, long pages); +bool shmem_recalc_inode(struct inode *inode, long alloced, long swapped); + #ifdef CONFIG_SHRINKER_DEBUG static inline __printf(2, 0) int shrinker_debugfs_name_alloc( struct shrinker *shrinker, const char *fmt, va_list ap) diff --git a/mm/shmem.c b/mm/shmem.c index ef57e2649a41..eea2e8ca205f 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -219,7 +219,7 @@ static inline void shmem_unacct_blocks(unsigned long flags, long pages) vm_unacct_memory(pages * VM_ACCT(PAGE_SIZE)); } -static int shmem_inode_acct_blocks(struct inode *inode, long pages) +int shmem_inode_acct_blocks(struct inode *inode, long pages) { struct shmem_inode_info *info = SHMEM_I(inode); struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb); @@ -435,7 +435,7 @@ static void shmem_free_inode(struct super_block *sb, size_t freed_ispace) * * Return: true if swapped was incremented from 0, for shmem_writeout(). */ -static bool shmem_recalc_inode(struct inode *inode, long alloced, long swapped) +bool shmem_recalc_inode(struct inode *inode, long alloced, long swapped) { struct shmem_inode_info *info = SHMEM_I(inode); bool first_swapped = false; @@ -898,9 +898,9 @@ static void shmem_update_stats(struct folio *folio, int nr_pages) /* * Somewhat like filemap_add_folio, but error if expected item has gone. */ -static int shmem_add_to_page_cache(struct folio *folio, - struct address_space *mapping, - pgoff_t index, void *expected, gfp_t gfp) +int shmem_add_to_page_cache(struct folio *folio, + struct address_space *mapping, + pgoff_t index, void *expected, gfp_t gfp) { XA_STATE_ORDER(xas, &mapping->i_pages, index, folio_order(folio)); unsigned long nr = folio_nr_pages(folio); -- 2.50.1.565.gc32cd1483b-goog