CIFS: Implement cifs_strict_fsync
Invalidate inode mapping if we don't have at least Level II oplock in
cifs_strict_fsync. Also remove filemap_write_and_wait call from cifs_fsync
because it is previously called from vfs_fsync_range. Add file operations'
structures for strict cache mode.
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 99d777a..f6093e4 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -733,6 +733,25 @@
.setlease = cifs_setlease,
};
+const struct file_operations cifs_file_strict_ops = {
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = generic_file_aio_read,
+ .aio_write = cifs_file_aio_write,
+ .open = cifs_open,
+ .release = cifs_close,
+ .lock = cifs_lock,
+ .fsync = cifs_strict_fsync,
+ .flush = cifs_flush,
+ .mmap = cifs_file_mmap,
+ .splice_read = generic_file_splice_read,
+ .llseek = cifs_llseek,
+#ifdef CONFIG_CIFS_POSIX
+ .unlocked_ioctl = cifs_ioctl,
+#endif /* CONFIG_CIFS_POSIX */
+ .setlease = cifs_setlease,
+};
+
const struct file_operations cifs_file_direct_ops = {
/* no aio, no readv -
BB reevaluate whether they can be done with directio, no cache */
@@ -751,6 +770,7 @@
.llseek = cifs_llseek,
.setlease = cifs_setlease,
};
+
const struct file_operations cifs_file_nobrl_ops = {
.read = do_sync_read,
.write = do_sync_write,
@@ -769,6 +789,24 @@
.setlease = cifs_setlease,
};
+const struct file_operations cifs_file_strict_nobrl_ops = {
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = generic_file_aio_read,
+ .aio_write = cifs_file_aio_write,
+ .open = cifs_open,
+ .release = cifs_close,
+ .fsync = cifs_strict_fsync,
+ .flush = cifs_flush,
+ .mmap = cifs_file_mmap,
+ .splice_read = generic_file_splice_read,
+ .llseek = cifs_llseek,
+#ifdef CONFIG_CIFS_POSIX
+ .unlocked_ioctl = cifs_ioctl,
+#endif /* CONFIG_CIFS_POSIX */
+ .setlease = cifs_setlease,
+};
+
const struct file_operations cifs_file_direct_nobrl_ops = {
/* no mmap, no aio, no readv -
BB reevaluate whether they can be done with directio, no cache */