cifs: avoid a kmalloc in smb2_send_recv/SendReceive2 for the common case

Browse source

In both functions, use an array of 8 (arbitrary but should be big enough
for all current uses) iov and avoid having to kmalloc the array
for the common case.

If 8 is too small, then fall back to the original behaviour and use
kmalloc/kfree.

This should not change any behaviour but should save us a tiny amount of
cpu cycles.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>

...

This commit is contained in:

Ronnie Sahlberg 2017-11-21 15:08:07 +11:00 • committed by Steve French

parent 305428acf0

commit 3cecf4865c

1 changed files with 23 additions and 10 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

33

fs/cifs/transport.c

View file