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authorDavid Howells <dhowells@redhat.com>2024-01-03 15:30:48 +0100
committerDavid Howells <dhowells@redhat.com>2024-01-04 14:15:31 +0100
commit252cf7b2eaf7cb904580ffbb0126d23411bcb43d (patch)
tree81f7cb65ba9f47e8a08569feaf8264b980e1282f /fs
parent9p: Do a couple of cleanups (diff)
downloadlinux-252cf7b2eaf7cb904580ffbb0126d23411bcb43d.tar.xz
linux-252cf7b2eaf7cb904580ffbb0126d23411bcb43d.zip
9p: Use length of data written to the server in preference to error
In v9fs_upload_to_server(), we pass the error to netfslib to terminate the subreq rather than the amount of data written - even if we did actually write something. Further, we assume that the write is always entirely done if successful - but it might have been partially complete - as returned by p9_client_write(), but we ignore that. Fix this by indicating the amount written by preference and only returning the error if we didn't write anything. (We might want to return both in future if both are available as this might be useful as to whether we retry or not.) Suggested-by: Dominique Martinet <asmadeus@codewreck.org> Link: https://lore.kernel.org/r/ZZULNQAZ0n0WQv7p@codewreck.org/ Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Dominique Martinet <asmadeus@codewreck.org> cc: Eric Van Hensbergen <ericvh@kernel.org> cc: Latchesar Ionkov <lucho@ionkov.net> cc: Christian Schoenebeck <linux_oss@crudebyte.com> cc: v9fs@lists.linux.dev cc: linux-cachefs@redhat.com cc: linux-fsdevel@vger.kernel.org
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/vfs_addr.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index f7f83eec3bcc..047855033d32 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -29,12 +29,11 @@
static void v9fs_upload_to_server(struct netfs_io_subrequest *subreq)
{
struct p9_fid *fid = subreq->rreq->netfs_priv;
- int err;
+ int err, len;
trace_netfs_sreq(subreq, netfs_sreq_trace_submit);
- p9_client_write(fid, subreq->start, &subreq->io_iter, &err);
- netfs_write_subrequest_terminated(subreq, err < 0 ? err : subreq->len,
- false);
+ len = p9_client_write(fid, subreq->start, &subreq->io_iter, &err);
+ netfs_write_subrequest_terminated(subreq, len ?: err, false);
}
static void v9fs_upload_to_server_worker(struct work_struct *work)