[PATCH 02/17] netfs, cifs: Move CIFS_INO_MODIFIED_ATTR to netfs_inode

David Howells
2024-06-20T17:32:15Z

Move CIFS_INO_MODIFIED_ATTR to netfs_inode as NETFS_ICTX_MODIFIED_ATTR and
then make netfs_perform_write() set it. This means that cifs doesn't need
to implement the ->post_modify() hook.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: Steve French <sfrench@samba.org>
cc: Paulo Alcantara <pc@manguebit.com>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
---
fs/netfs/buffered_write.c | 10 ++++++++--
fs/smb/client/cifsglob.h | 1 -
fs/smb/client/file.c | 9 +--------
include/linux/netfs.h | 1 +
4 files changed, 10 insertions(+), 11 deletions(-)

diff --git a/fs/netfs/buffered_write.c b/fs/netfs/buffered_write.c
index 07bc1fd43530..41d556fe382a 100644
--- a/fs/netfs/buffered_write.c
+++ b/fs/netfs/buffered_write.c
@@ -405,8 +405,14 @@ ssize_t netfs_perform_write(struct kiocb *iocb, struct iov_iter *iter,
} while (iov_iter_count(iter));

out:
- if (likely(written) && ctx->ops->post_modify)
- ctx->ops->post_modify(inode);
+ if (likely(written)) {
+ /* Set indication that ctime and mtime got updated in case
+ * close is deferred.
+ */
+ set_bit(NETFS_ICTX_MODIFIED_ATTR, &ctx->flags);
+ if (unlikely(ctx->ops->post_modify))
+ ctx->ops->post_modify(inode);
+ }

if (unlikely(wreq)) {
ret2 = netfs_end_writethrough(wreq, &wbc, writethrough);
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 73482734a8d8..4b00512fb9f9 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1569,7 +1569,6 @@ struct cifsInodeInfo {
#define CIFS_INO_DELETE_PENDING (3) /* delete pending on server */
#define CIFS_INO_INVALID_MAPPING (4) /* pagecache is invalid */
#define CIFS_INO_LOCK (5) /* lock bit for synchronization */
-#define CIFS_INO_MODIFIED_ATTR (6) /* Indicate change in mtime/ctime */
#define CIFS_INO_CLOSE_ON_LOCK (7) /* Not to defer the close when lock is set */
unsigned long flags;
spinlock_t writers_lock;
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index 9d5c2440abfc..67dd8fcd0e6d 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -302,12 +302,6 @@ static void cifs_rreq_done(struct netfs_io_request *rreq)
inode_set_atime_to_ts(inode, inode_get_mtime(inode));
}

-static void cifs_post_modify(struct inode *inode)
-{
- /* Indication to update ctime and mtime as close is deferred */
- set_bit(CIFS_INO_MODIFIED_ATTR, &CIFS_I(inode)->flags);
-}
-
static void cifs_free_request(struct netfs_io_request *rreq)
{
struct cifs_io_request *req = container_of(rreq, struct cifs_io_request, rreq);
@@ -346,7 +340,6 @@ const struct netfs_request_ops cifs_req_ops = {
.clamp_length = cifs_clamp_length,
.issue_read = cifs_req_issue_read,
.done = cifs_rreq_done,
- .post_modify = cifs_post_modify,
.begin_writeback = cifs_begin_writeback,
.prepare_write = cifs_prepare_write,
.issue_write = cifs_issue_write,
@@ -1369,7 +1362,7 @@ int cifs_close(struct inode *inode, struct file *file)
dclose = kmalloc(sizeof(struct cifs_deferred_close), GFP_KERNEL);
if ((cfile->status_file_deleted == false) &&
(smb2_can_defer_close(inode, dclose))) {
- if (test_and_clear_bit(CIFS_INO_MODIFIED_ATTR, &cinode->flags)) {
+ if (test_and_clear_bit(NETFS_ICTX_MODIFIED_ATTR, &cinode->netfs.flags)) {
inode_set_mtime_to_ts(inode,
inode_set_ctime_current(inode));
}
diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index 5d0288938cc2..2d438aaae685 100644
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -73,6 +73,7 @@ struct netfs_inode {
#define NETFS_ICTX_ODIRECT 0 /* The file has DIO in progress */
#define NETFS_ICTX_UNBUFFERED 1 /* I/O should not use the pagecache */
#define NETFS_ICTX_WRITETHROUGH 2 /* Write-through caching */
+#define NETFS_ICTX_MODIFIED_ATTR 3 /* Indicate change in mtime/ctime */
#define NETFS_ICTX_USE_PGPRIV2 31 /* [DEPRECATED] Use PG_private_2 to mark
* write to cache on read */
};