diff options
| author | Pavel Shilovsky <pshilovsky@samba.org> | 2012-09-18 16:20:33 -0700 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2012-09-24 21:46:30 -0500 |
| commit | 983c88a497914d60c91f431b05a8449ddda19167 (patch) | |
| tree | 6e8ce5d70c6a584472ed7414497d06c034eb0595 /fs/cifs/smb2ops.c | |
| parent | 95a3f2f377735ed13e42d3b8039aa1d73af2c90e (diff) | |
CIFS: Add oplock break support for SMB2
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/smb2ops.c')
| -rw-r--r-- | fs/cifs/smb2ops.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 2d88c90ded0..8c72e0768d1 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -65,6 +65,17 @@ smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add, server->in_flight--; if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP) rc = change_conf(server); + /* + * Sometimes server returns 0 credits on oplock break ack - we need to + * rebalance credits in this case. + */ + else if (server->in_flight > 0 && server->oplock_credits == 0 && + server->oplocks) { + if (server->credits > 1) { + server->credits--; + server->oplock_credits++; + } + } spin_unlock(&server->req_lock); wake_up(&server->request_q); if (rc) @@ -502,6 +513,15 @@ smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length) return true; } +static int +smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid, + struct cifsInodeInfo *cinode) +{ + return SMB2_oplock_break(0, tcon, fid->persistent_fid, + fid->volatile_fid, + cinode->clientCanCacheRead ? 1 : 0); +} + struct smb_version_operations smb21_operations = { .setup_request = smb2_setup_request, .setup_async_request = smb2_setup_async_request, @@ -519,6 +539,7 @@ struct smb_version_operations smb21_operations = { .dump_detail = smb2_dump_detail, .clear_stats = smb2_clear_stats, .print_stats = smb2_print_stats, + .is_oplock_break = smb2_is_valid_oplock_break, .need_neg = smb2_need_neg, .negotiate = smb2_negotiate, .negotiate_wsize = smb2_negotiate_wsize, @@ -556,6 +577,7 @@ struct smb_version_operations smb21_operations = { .close_dir = smb2_close_dir, .calc_smb_size = smb2_calc_size, .is_status_pending = smb2_is_status_pending, + .oplock_response = smb2_oplock_response, }; struct smb_version_values smb21_values = { |