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| author | Steve French | 2018-06-14 00:05:58 +0200 |
|---|---|---|
| committer | Steve French | 2018-06-15 09:38:08 +0200 |
| commit | d409014e4feeab486fb36b350abfc4c94de8be37 (patch) | |
| tree | 23aba1406c21e7dc0d6afa7aa4769236e9829b40 /fs/cifs/smb2pdu.c | |
| parent | cifs: minor documentation updates (diff) | |
| download | kernel-qcow2-linux-d409014e4feeab486fb36b350abfc4c94de8be37.tar.gz kernel-qcow2-linux-d409014e4feeab486fb36b350abfc4c94de8be37.tar.xz kernel-qcow2-linux-d409014e4feeab486fb36b350abfc4c94de8be37.zip | |
smb3: increase initial number of credits requested to allow write
Compared to other clients the Linux smb3 client ramps up
credits very slowly, taking more than 128 operations before a
maximum size write could be sent (since the number of credits
requested is only 2 per small operation, causing the credit
limit to grow very slowly).
This lack of credits initially would impact large i/o performance,
when large i/o is tried early before enough credits are built up.
Signed-off-by: Steve French <stfrench@gmail.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs/cifs/smb2pdu.c')
| -rw-r--r-- | fs/cifs/smb2pdu.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index af032e1a3eac..328e23abd241 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -990,8 +990,9 @@ SMB2_sess_alloc_buffer(struct SMB2_sess_data *sess_data) req->PreviousSessionId = sess_data->previous_session; req->Flags = 0; /* MBZ */ - /* to enable echos and oplocks */ - req->sync_hdr.CreditRequest = cpu_to_le16(3); + + /* enough to enable echos and oplocks and one max size write */ + req->sync_hdr.CreditRequest = cpu_to_le16(130); /* only one of SMB2 signing flags may be set in SMB2 request */ if (server->sign) |