From: Jan Kara <jack@suse.cz>
Date: Wed, 7 Dec 2022 11:27:14 +0000 (+0100)
Subject: mm: export buffer_migrate_folio_norefs()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e26355e21520e56732f58590b812ca619b88ac72;p=linux.git

mm: export buffer_migrate_folio_norefs()

Ext4 needs this function to allow safe migration for journalled data
pages.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221207112722.22220-11-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/mm/migrate.c b/mm/migrate.c
index dff333593a8ae..5e4ca21da712a 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -820,6 +820,7 @@ int buffer_migrate_folio_norefs(struct address_space *mapping,
 {
 	return __buffer_migrate_folio(mapping, dst, src, mode, true);
 }
+EXPORT_SYMBOL_GPL(buffer_migrate_folio_norefs);
 #endif
 
 int filemap_migrate_folio(struct address_space *mapping,