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cifs: add a warning when the in-flight count goes negative

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We've seen the in-flight count go into negative with some
internal stress testing in Microsoft.

Adding a WARN when this happens, in hope of understanding
why this happens when it happens.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Shyam Prasad N 2023-06-09 17:46:56 +00:00 committed by Steve French
parent c774e6779f
commit e4645cc2f1
1 changed files with 1 additions and 0 deletions
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fs/smb/client/smb2ops.c
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@ -93,6 +93,7 @@ smb2_add_credits(struct TCP_Server_Info *server,
server->conn_id, server->hostname, *val,
add, server->in_flight);
}
WARN_ON_ONCE(server->in_flight == 0);
server->in_flight--;
if (server->in_flight == 0 &&
((optype & CIFS_OP_MASK) != CIFS_NEG_OP) &&