diff mbox series

[v2,8/9] smb: client: optimise dentry revalidation for reparse points

Message ID 20231126025510.28147-9-pc@manguebit.com (mailing list archive)
State New, archived
Headers show
Series reparse points work | expand

Commit Message

Paulo Alcantara Nov. 26, 2023, 2:55 a.m. UTC
If the positive dentry is known to be a reparse point already, save a
roundtrip in smb2_query_path_info() and smb311_posix_query_path_info()
by sending compound request with OPEN_REPARSE_POINT.

Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
---
 fs/smb/client/inode.c     | 15 +++++++++++----
 fs/smb/client/smb2inode.c | 11 ++++++++---
 2 files changed, 19 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c
index 111e60e5e260..d7d19cdb3c8c 100644
--- a/fs/smb/client/inode.c
+++ b/fs/smb/client/inode.c
@@ -1142,6 +1142,8 @@  static int cifs_get_fattr(struct cifs_open_info_data *data,
 	 */
 
 	if (!data) {
+		if (*inode && CIFS_I(*inode)->reparse)
+			tmp_data.reparse_point = true;
 		rc = server->ops->query_path_info(xid, tcon, cifs_sb,
 						  full_path, &tmp_data);
 		data = &tmp_data;
@@ -1301,6 +1303,7 @@  int cifs_get_inode_info(struct inode **inode,
 
 static int smb311_posix_get_fattr(struct cifs_open_info_data *data,
 				  struct cifs_fattr *fattr,
+				  struct inode **inode,
 				  const char *full_path,
 				  struct super_block *sb,
 				  const unsigned int xid)
@@ -1322,6 +1325,8 @@  static int smb311_posix_get_fattr(struct cifs_open_info_data *data,
 	 * 1. Fetch file metadata if not provided (data)
 	 */
 	if (!data) {
+		if (*inode && CIFS_I(*inode)->reparse)
+			tmp_data.reparse_point = true;
 		rc = smb311_posix_query_path_info(xid, tcon, cifs_sb,
 						  full_path, &tmp_data,
 						  &owner, &group);
@@ -1390,7 +1395,7 @@  int smb311_posix_get_inode_info(struct inode **inode,
 		return 0;
 	}
 
-	rc = smb311_posix_get_fattr(data, &fattr, full_path, sb, xid);
+	rc = smb311_posix_get_fattr(data, &fattr, inode, full_path, sb, xid);
 	if (rc)
 		goto out;
 
@@ -1537,10 +1542,12 @@  struct inode *cifs_root_iget(struct super_block *sb)
 	}
 
 	convert_delimiter(path, CIFS_DIR_SEP(cifs_sb));
-	if (tcon->posix_extensions)
-		rc = smb311_posix_get_fattr(NULL, &fattr, path, sb, xid);
-	else
+	if (tcon->posix_extensions) {
+		rc = smb311_posix_get_fattr(NULL, &fattr, &inode,
+					    path, sb, xid);
+	} else {
 		rc = cifs_get_fattr(NULL, sb, xid, NULL, &fattr, &inode, path);
+	}
 
 iget_root:
 	if (!rc) {
diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c
index 3e8ba41b790d..9d1b043b8356 100644
--- a/fs/smb/client/smb2inode.c
+++ b/fs/smb/client/smb2inode.c
@@ -667,7 +667,6 @@  int smb2_query_path_info(const unsigned int xid,
 	int rc, rc2;
 
 	data->adjust_tz = false;
-	data->reparse_point = false;
 
 	if (strcmp(full_path, ""))
 		rc = -ENOENT;
@@ -689,6 +688,9 @@  int smb2_query_path_info(const unsigned int xid,
 	in_iov[0].iov_len = sizeof(*data);
 	in_iov[1] = in_iov[0];
 
+	if (data->reparse_point)
+		goto open_reparse;
+
 	cifs_get_readable_path(tcon, full_path, &cfile);
 	rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 			      FILE_READ_ATTRIBUTES, FILE_OPEN,
@@ -714,6 +716,7 @@  int smb2_query_path_info(const unsigned int xid,
 			/* symlink already parsed in create response */
 			num_cmds = 1;
 		} else {
+open_reparse:
 			cmds[1] = SMB2_OP_GET_REPARSE;
 			num_cmds = 2;
 		}
@@ -766,8 +769,6 @@  int smb311_posix_query_path_info(const unsigned int xid,
 	int i, num_cmds;
 
 	data->adjust_tz = false;
-	data->reparse_point = false;
-
 	/*
 	 * BB TODO: Add support for using the cached root handle.
 	 * Create SMB2_query_posix_info worker function to do non-compounded query
@@ -778,6 +779,9 @@  int smb311_posix_query_path_info(const unsigned int xid,
 	in_iov[0].iov_len = sizeof(*data);
 	in_iov[1] = in_iov[0];
 
+	if (data->reparse_point)
+		goto open_reparse;
+
 	cifs_get_readable_path(tcon, full_path, &cfile);
 	rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
 			      FILE_READ_ATTRIBUTES, FILE_OPEN,
@@ -802,6 +806,7 @@  int smb311_posix_query_path_info(const unsigned int xid,
 			/* symlink already parsed in create response */
 			num_cmds = 1;
 		} else {
+open_reparse:
 			cmds[1] = SMB2_OP_GET_REPARSE;
 			num_cmds = 2;
 		}