diff options
| author | Pavel Shilovsky <piastry@etersoft.ru> | 2011-10-22 15:33:31 +0400 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2011-10-24 13:11:52 -0500 |
| commit | 9ee305b70e09f5132c9723780ce10e69710b8bca (patch) | |
| tree | d739e9ba99cc523235404b7f5e38828ea6ed9536 /fs/cifs/cifssmb.c | |
| parent | 4f6bcec910d45e4f46b1514977caa529bc69e645 (diff) | |
CIFS: Send as many mandatory unlock ranges at once as possible
that reduces a traffic and increases a performance.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/cifssmb.c')
| -rw-r--r-- | fs/cifs/cifssmb.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 6a45a176938..6600aa2d2ef 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -2320,6 +2320,46 @@ CIFSSMBWrite2(const int xid, struct cifs_io_parms *io_parms, return rc; } +int cifs_lockv(const int xid, struct cifs_tcon *tcon, const __u16 netfid, + const __u8 lock_type, const __u32 num_unlock, + const __u32 num_lock, LOCKING_ANDX_RANGE *buf) +{ + int rc = 0; + LOCK_REQ *pSMB = NULL; + struct kvec iov[2]; + int resp_buf_type; + __u16 count; + + cFYI(1, "cifs_lockv num lock %d num unlock %d", num_lock, num_unlock); + + rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB); + if (rc) + return rc; + + pSMB->Timeout = 0; + pSMB->NumberOfLocks = cpu_to_le16(num_lock); + pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock); + pSMB->LockType = lock_type; + pSMB->AndXCommand = 0xFF; /* none */ + pSMB->Fid = netfid; /* netfid stays le */ + + count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); + inc_rfc1001_len(pSMB, count); + pSMB->ByteCount = cpu_to_le16(count); + + iov[0].iov_base = (char *)pSMB; + iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 - + (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); + iov[1].iov_base = (char *)buf; + iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE); + + cifs_stats_inc(&tcon->num_locks); + rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP); + if (rc) + cFYI(1, "Send error in cifs_lockv = %d", rc); + + return rc; +} int CIFSSMBLock(const int xid, struct cifs_tcon *tcon, |