summaryrefslogtreecommitdiff
path: root/fs/cifs/smb2inode.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/cifs/smb2inode.c')
-rw-r--r--fs/cifs/smb2inode.c43
1 files changed, 28 insertions, 15 deletions
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 1238cd3552f9..a6e786e39248 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -44,26 +44,38 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
__u32 create_options, void *data, int command)
{
int rc, tmprc = 0;
- __le16 *utf16_path;
+ __le16 *utf16_path = NULL;
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct cifs_open_parms oparms;
struct cifs_fid fid;
+ bool use_cached_root_handle = false;
- utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
- if (!utf16_path)
- return -ENOMEM;
+ if ((strcmp(full_path, "") == 0) && (create_options == 0) &&
+ (desired_access == FILE_READ_ATTRIBUTES) &&
+ (create_disposition == FILE_OPEN) &&
+ (tcon->nohandlecache == false)) {
+ rc = open_shroot(xid, tcon, &fid);
+ if (rc == 0)
+ use_cached_root_handle = true;
+ }
+
+ if (use_cached_root_handle == false) {
+ utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
+ if (!utf16_path)
+ return -ENOMEM;
- oparms.tcon = tcon;
- oparms.desired_access = desired_access;
- oparms.disposition = create_disposition;
- oparms.create_options = create_options;
- oparms.fid = &fid;
- oparms.reconnect = false;
+ oparms.tcon = tcon;
+ oparms.desired_access = desired_access;
+ oparms.disposition = create_disposition;
+ oparms.create_options = create_options;
+ oparms.fid = &fid;
+ oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
- if (rc) {
- kfree(utf16_path);
- return rc;
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
+ if (rc) {
+ kfree(utf16_path);
+ return rc;
+ }
}
switch (command) {
@@ -107,7 +119,8 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
break;
}
- rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+ if (use_cached_root_handle == false)
+ rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
if (tmprc)
rc = tmprc;
kfree(utf16_path);