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authorLong Li <longli@microsoft.com>2018-10-31 22:13:11 +0000
committerSteve French <stfrench@microsoft.com>2018-11-02 14:09:42 -0500
commitbe4eb68846dc4450a9a4998d7c16d9f4955f9988 (patch)
treedbca86b4ebf406eb7cfa1fd8184daabba44b415b /fs
parent8c5f9c1ab7cb45f6584ce312b14fb310a8fa28f3 (diff)
downloadlinux-be4eb68846dc4450a9a4998d7c16d9f4955f9988.tar.bz2
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 <longli@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/cifsfs.c10
1 files changed, 4 insertions, 6 deletions
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,