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afs: Fix an off-by-one error in afs_send_pages() 

afs_send_pages() should only put the call into the AFS_CALL_AWAIT_REPLY
state if it has sent all the pages - but the check it makes is incorrect
and sometimes it will finish the loop early.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2017-03-16 16:27:48 +00:00
parent 7286a35e89
commit 445783d0ec
1 changed files with 1 additions and 1 deletions
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2
fs/afs/rxrpc.c
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@ -315,7 +315,7 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg)
* packet as RxRPC might give us the reply before it
* returns from sending the request.
*/
if (first + nr >= last)
if (first + nr - 1 >= last)
call->state = AFS_CALL_AWAIT_REPLY;
ret = rxrpc_kernel_send_data(afs_socket, call->rxcall,
msg, bytes);