From: Jan Kara <jack@suse.cz>
Date: Thu, 29 Aug 2019 09:04:11 -0700
Subject: fs: Export generic_fadvise()
Git-commit: cf1ea0592dbf109e7e7935b7d5b1a47a1ba04174
Patch-mainline: 5.4-rc1
References: bnc#1151927 5.3.4

Filesystems will need to call this function from their fadvise handlers.

CC: stable@vger.kernel.org
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 include/linux/fs.h |    2 ++
 mm/fadvise.c       |    4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3531,6 +3531,8 @@ extern void inode_nohighmem(struct inode
 /* mm/fadvise.c */
 extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len,
 		       int advice);
+extern int generic_fadvise(struct file *file, loff_t offset, loff_t len,
+			   int advice);
 
 #if defined(CONFIG_IO_URING)
 extern struct sock *io_uring_get_socket(struct file *file);
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -27,8 +27,7 @@
  * deactivate the pages and clear PG_Referenced.
  */
 
-static int generic_fadvise(struct file *file, loff_t offset, loff_t len,
-			   int advice)
+int generic_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
 {
 	struct inode *inode;
 	struct address_space *mapping;
@@ -178,6 +177,7 @@ static int generic_fadvise(struct file *
 	}
 	return 0;
 }
+EXPORT_SYMBOL(generic_fadvise);
 
 int vfs_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
 {