From: Dominique Martinet <asmadeus@codewreck.org>
To: Eric Van Hensbergen <ericvh@kernel.org>,
Latchesar Ionkov <lucho@ionkov.net>,
Christian Schoenebeck <linux_oss@crudebyte.com>,
Al Viro <viro@zeniv.linux.org.uk>
Cc: v9fs@lists.linux.dev, linux-kernel@vger.kernel.org,
Dominique Martinet <asmadeus@codewreck.org>
Subject: [PATCH] 9p: Fix read/write debug statements to report server reply
Date: Tue, 09 Jan 2024 12:39:03 +0900 [thread overview]
Message-ID: <20240109-9p-rw-trace-v1-1-327178114257@codewreck.org> (raw)
Previous conversion to iov missed these debug statements which would now
always print the requested size instead of the actual server reply.
Write also added a loop in a much older commit but we didn't report
these, while reads do report each iteration -- it's more coherent to
keep reporting all requests to server so move that at the same time.
Fixes: 7f02464739da ("9p: convert to advancing variant of iov_iter_get_pages_alloc()")
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
---
net/9p/client.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/net/9p/client.c b/net/9p/client.c
index e265a0ca6bdd..f7e90b4769bb 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1583,7 +1583,7 @@ p9_client_read_once(struct p9_fid *fid, u64 offset, struct iov_iter *to,
received = rsize;
}
- p9_debug(P9_DEBUG_9P, "<<< RREAD count %d\n", count);
+ p9_debug(P9_DEBUG_9P, "<<< RREAD count %d\n", received);
if (non_zc) {
int n = copy_to_iter(dataptr, received, to);
@@ -1609,9 +1609,6 @@ p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err)
int total = 0;
*err = 0;
- p9_debug(P9_DEBUG_9P, ">>> TWRITE fid %d offset %llu count %zd\n",
- fid->fid, offset, iov_iter_count(from));
-
while (iov_iter_count(from)) {
int count = iov_iter_count(from);
int rsize = fid->iounit;
@@ -1623,6 +1620,9 @@ p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err)
if (count < rsize)
rsize = count;
+ p9_debug(P9_DEBUG_9P, ">>> TWRITE fid %d offset %llu count %d (/%d)\n",
+ fid->fid, offset, rsize, count);
+
/* Don't bother zerocopy for small IO (< 1024) */
if (clnt->trans_mod->zc_request && rsize > 1024) {
req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, from, 0,
@@ -1650,7 +1650,7 @@ p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err)
written = rsize;
}
- p9_debug(P9_DEBUG_9P, "<<< RWRITE count %d\n", count);
+ p9_debug(P9_DEBUG_9P, "<<< RWRITE count %d\n", written);
p9_req_put(clnt, req);
iov_iter_revert(from, count - written - iov_iter_count(from));
---
base-commit: 0dd3ee31125508cd67f7e7172247f05b7fd1753a
change-id: 20240109-9p-rw-trace-c61593804731
Best regards,
--
Dominique Martinet | Asmadeus
reply other threads:[~2024-01-09 3:39 UTC|newest]
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