From: Jan Kara jack@suse.cz
commit cf1ea0592dbf109e7e7935b7d5b1a47a1ba04174 upstream.
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: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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) {