From: Long Li Date: Wed, 31 Oct 2018 22:13:11 +0000 (+0000) Subject: CIFS: Add direct I/O functions to file_operations X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=be4eb68846dc4450a9a4998d7c16d9f4955f9988;p=openwrt%2Fstaging%2Fblogic.git CIFS: Add direct I/O functions to file_operations With direct read/write functions implemented, add them to file_operations. Dircet I/O is used under two conditions: 1. When mounting with "cache=none", CIFS uses direct I/O for all user file data transfer. 2. When opening a file with O_DIRECT, CIFS uses direct I/O for all data transfer on this file. Signed-off-by: Long Li Signed-off-by: Steve French Reviewed-by: Ronnie Sahlberg --- diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index b7ac09e38159..1b21262ec874 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1180,9 +1180,8 @@ const struct file_operations cifs_file_strict_ops = { }; const struct file_operations cifs_file_direct_ops = { - /* BB reevaluate whether they can be done with directio, no cache */ - .read_iter = cifs_user_readv, - .write_iter = cifs_user_writev, + .read_iter = cifs_direct_readv, + .write_iter = cifs_direct_writev, .open = cifs_open, .release = cifs_close, .lock = cifs_lock, @@ -1236,9 +1235,8 @@ const struct file_operations cifs_file_strict_nobrl_ops = { }; const struct file_operations cifs_file_direct_nobrl_ops = { - /* BB reevaluate whether they can be done with directio, no cache */ - .read_iter = cifs_user_readv, - .write_iter = cifs_user_writev, + .read_iter = cifs_direct_readv, + .write_iter = cifs_direct_writev, .open = cifs_open, .release = cifs_close, .fsync = cifs_fsync,