diff options
Diffstat (limited to 'fs/cifs/smb2inode.c')
| -rw-r--r-- | fs/cifs/smb2inode.c | 43 |
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); |