| Message ID | 20210727000709.225032-1-harshvardhan.jha@oracle.com |
|---|---|
| State | New |
| Headers | show |
| Series | 9p/xen: Fix end of loop tests for list_for_each_entry | expand |
Harshvardhan Jha wrote on Tue, Jul 27, 2021 at 05:37:10AM +0530: > This patch addresses the following problems: > - priv can never be NULL, so this part of the check is useless > - if the loop ran through the whole list, priv->client is invalid and > it is more appropriate and sufficient to check for the end of > list_for_each_entry loop condition. > > Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com> Alright, taken and pushed to linux-next. I'll send it to Linus next week-ish FWIW, this isn't a merge so messing with the commit message is fine and you didn't really need to resend (either is fine), but if you do for next time please tag in the subject it's a v2 (e.g. [PATCH v2]), optionally with a changelog below the three dashes that won't be included in the final commit message (not really useful here as we discussed the change just before, but for bigger subsystems it can help) -- Dominique
diff --git a/net/9p/trans_xen.c b/net/9p/trans_xen.c index f4fea28e05da..3ec1a51a6944 100644 --- a/net/9p/trans_xen.c +++ b/net/9p/trans_xen.c @@ -138,7 +138,7 @@ static bool p9_xen_write_todo(struct xen_9pfs_dataring *ring, RING_IDX size) static int p9_xen_request(struct p9_client *client, struct p9_req_t *p9_req) { - struct xen_9pfs_front_priv *priv = NULL; + struct xen_9pfs_front_priv *priv; RING_IDX cons, prod, masked_cons, masked_prod; unsigned long flags; u32 size = p9_req->tc.size; @@ -151,7 +151,7 @@ static int p9_xen_request(struct p9_client *client, struct p9_req_t *p9_req) break; } read_unlock(&xen_9pfs_lock); - if (!priv || priv->client != client) + if (list_entry_is_head(priv, &xen_9pfs_devs, list)) return -EINVAL; num = p9_req->tc.tag % priv->num_rings;
This patch addresses the following problems: - priv can never be NULL, so this part of the check is useless - if the loop ran through the whole list, priv->client is invalid and it is more appropriate and sufficient to check for the end of list_for_each_entry loop condition. Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com> --- net/9p/trans_xen.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)