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smb3: request more credits on normal (non-large read/write) ops 

We can end up building up credits too slowly to do large operations
(reads and writes for example) that require many credits. By
comparison most other SMB3 clients request many more (sometimes
thousands) of credits on all operations.  Increase
the number of credits we request on typical (non-large e.g
read/write) operations to 10 from 2 so we can build a pool of credits
faster.

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
This commit is contained in:
Steve French 2019-03-05 21:04:56 -06:00
parent b30c74c73c
commit 69dc4b1817
1 changed files with 2 additions and 2 deletions
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4
fs/cifs/smb2pdu.c
View File

@ -107,13 +107,13 @@ smb2_hdr_assemble(struct smb2_sync_hdr *shdr, __le16 smb2_cmd,
struct TCP_Server_Info *server = tcon->ses->server;
spin_lock(&server->req_lock);
/* Request up to 2 credits but don't go over the limit. */
/* Request up to 10 credits but don't go over the limit. */
if (server->credits >= server->max_credits)
shdr->CreditRequest = cpu_to_le16(0);
else
shdr->CreditRequest = cpu_to_le16(
min_t(int, server->max_credits -
server->credits, 2));
server->credits, 10));
spin_unlock(&server->req_lock);
} else {
shdr->CreditRequest = cpu_to_le16(2);