From f01b2b3ed8735dacd92f1da548708449525e286a Mon Sep 17 00:00:00 2001
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: Mon, 6 Feb 2023 16:25:20 +0000
Subject: shmem: add shmem_read_folio() and shmem_read_folio_gfp()

These are the folio replacements for shmem_read_mapping_page() and
shmem_read_mapping_page_gfp().

[akpm@linux-foundation.org: fix shmem_read_mapping_page_gfp(), per Matthew]
  Link: https://lkml.kernel.org/r/Y+QdJTuzxeBYejw2@casper.infradead.org
Link: https://lkml.kernel.org/r/20230206162520.4029022-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mark Hemment <markhemm@googlemail.com>
Cc: Charan Teja Kalla <quic_charante@quicinc.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 include/linux/shmem_fs.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'include/linux')

diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index d09d54be4ffd..103d1000a5a2 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -109,6 +109,14 @@ enum sgp_type {
 
 int shmem_get_folio(struct inode *inode, pgoff_t index, struct folio **foliop,
 		enum sgp_type sgp);
+struct folio *shmem_read_folio_gfp(struct address_space *mapping,
+		pgoff_t index, gfp_t gfp);
+
+static inline struct folio *shmem_read_folio(struct address_space *mapping,
+		pgoff_t index)
+{
+	return shmem_read_folio_gfp(mapping, index, mapping_gfp_mask(mapping));
+}
 
 static inline struct page *shmem_read_mapping_page(
 				struct address_space *mapping, pgoff_t index)
-- 
cgit