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cifs: add ignore_pend flag to cifs_call_async

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The current code always ignores the max_pending limit. Have it instead
only optionally ignore the pending limit. For CIFSSMBEcho, we need to
ignore it to make sure they always can go out. For async reads, writes
and potentially other calls, we need to respect it.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2011-05-19 16:22:55 -04:00 committed by Steve French
parent fcc31cb6f1
commit 59ffd84141
3 changed files with 5 additions and 4 deletions
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2
fs/cifs/cifsproto.h
View file

@ -69,7 +69,7 @@ extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
extern int cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
unsigned int nvec, mid_callback_t *callback,
void *cbdata);
void *cbdata, bool ignore_pend);
extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
struct smb_hdr * /* input */ ,
struct smb_hdr * /* out */ ,

2
fs/cifs/cifssmb.c
View file

@ -743,7 +743,7 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
iov.iov_base = smb;
iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
rc = cifs_call_async(server, &iov, 1, cifs_echo_callback, server);
rc = cifs_call_async(server, &iov, 1, cifs_echo_callback, server, true);
if (rc)
cFYI(1, "Echo request failed: %d", rc);

5
fs/cifs/transport.c
View file

@ -343,13 +343,14 @@ wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ)
*/
int
cifs_call_async(struct TCP_Server_Info *server, struct kvec *iov,
unsigned int nvec, mid_callback_t *callback, void *cbdata)
unsigned int nvec, mid_callback_t *callback, void *cbdata,
bool ignore_pend)
{
int rc;
struct mid_q_entry *mid;
struct smb_hdr *hdr = (struct smb_hdr *)iov[0].iov_base;
rc = wait_for_free_request(server, CIFS_ASYNC_OP);
rc = wait_for_free_request(server, ignore_pend ? CIFS_ASYNC_OP : 0);
if (rc)
return rc;