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 --- include/linux/fs.h | 2 ++ mm/fadvise.c | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/linux/fs.h b/include/linux/fs.h index 997a530ff4e9..bc1b40fb0db7 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3531,6 +3531,8 @@ extern void inode_nohighmem(struct inode *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); diff --git a/mm/fadvise.c b/mm/fadvise.c index 467bcd032037..4f17c83db575 100644 --- 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 *file, loff_t offset, loff_t len, } return 0; } +EXPORT_SYMBOL(generic_fadvise);

int vfs_fadvise(struct file *file, loff_t offset, loff_t len, int advice) {