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Message-ID: <20240620173137.610345-12-dhowells@redhat.com>
Date: Thu, 20 Jun 2024 18:31:29 +0100
From: David Howells <dhowells@...hat.com>
To: Christian Brauner <christian@...uner.io>,
Steve French <smfrench@...il.com>,
Matthew Wilcox <willy@...radead.org>
Cc: David Howells <dhowells@...hat.com>,
Jeff Layton <jlayton@...nel.org>,
Gao Xiang <hsiangkao@...ux.alibaba.com>,
Dominique Martinet <asmadeus@...ewreck.org>,
Marc Dionne <marc.dionne@...istor.com>,
Paulo Alcantara <pc@...guebit.com>,
Shyam Prasad N <sprasad@...rosoft.com>,
Tom Talpey <tom@...pey.com>,
Eric Van Hensbergen <ericvh@...nel.org>,
Ilya Dryomov <idryomov@...il.com>,
netfs@...ts.linux.dev,
linux-afs@...ts.infradead.org,
linux-cifs@...r.kernel.org,
linux-nfs@...r.kernel.org,
ceph-devel@...r.kernel.org,
v9fs@...ts.linux.dev,
linux-erofs@...ts.ozlabs.org,
linux-fsdevel@...r.kernel.org,
linux-mm@...ck.org,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Steve French <sfrench@...ba.org>
Subject: [PATCH 11/17] cifs: Move the 'pid' from the subreq to the req
Move the reference pid from the cifs_io_subrequest struct to the
cifs_io_request struct as it's the same for all subreqs of a particular
request.
Signed-off-by: David Howells <dhowells@...hat.com>
cc: Steve French <sfrench@...ba.org>
cc: Paulo Alcantara <pc@...guebit.com>
cc: Jeff Layton <jlayton@...nel.org>
cc: linux-cifs@...r.kernel.org
cc: netfs@...ts.linux.dev
cc: linux-fsdevel@...r.kernel.org
---
fs/smb/client/cifsglob.h | 2 +-
fs/smb/client/cifssmb.c | 8 ++++----
fs/smb/client/file.c | 10 +++-------
fs/smb/client/smb2pdu.c | 4 ++--
4 files changed, 10 insertions(+), 14 deletions(-)
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index b48d3f5e8889..bbcc552c07be 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1495,6 +1495,7 @@ struct cifs_io_request {
struct netfs_io_request rreq;
struct cifsFileInfo *cfile;
struct TCP_Server_Info *server;
+ pid_t pid;
};
/* asynchronous read support */
@@ -1505,7 +1506,6 @@ struct cifs_io_subrequest {
struct cifs_io_request *req;
};
ssize_t got_bytes;
- pid_t pid;
unsigned int xid;
int result;
bool have_xid;
diff --git a/fs/smb/client/cifssmb.c b/fs/smb/client/cifssmb.c
index 25e9ab947c17..595c4b673707 100644
--- a/fs/smb/client/cifssmb.c
+++ b/fs/smb/client/cifssmb.c
@@ -1345,8 +1345,8 @@ cifs_async_readv(struct cifs_io_subrequest *rdata)
if (rc)
return rc;
- smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid);
- smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16));
+ smb->hdr.Pid = cpu_to_le16((__u16)rdata->req->pid);
+ smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->req->pid >> 16));
smb->AndXCommand = 0xFF; /* none */
smb->Fid = rdata->req->cfile->fid.netfid;
@@ -1689,8 +1689,8 @@ cifs_async_writev(struct cifs_io_subrequest *wdata)
if (rc)
goto async_writev_out;
- smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid);
- smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16));
+ smb->hdr.Pid = cpu_to_le16((__u16)wdata->req->pid);
+ smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->req->pid >> 16));
smb->AndXCommand = 0xFF; /* none */
smb->Fid = wdata->req->cfile->fid.netfid;
diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index 16fa1ac1ed2d..45c860f0e7fd 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -178,14 +178,8 @@ static void cifs_req_issue_read(struct netfs_io_subrequest *subreq)
struct cifs_io_subrequest *rdata = container_of(subreq, struct cifs_io_subrequest, subreq);
struct cifs_io_request *req = container_of(subreq->rreq, struct cifs_io_request, rreq);
struct cifs_sb_info *cifs_sb = CIFS_SB(rreq->inode->i_sb);
- pid_t pid;
int rc = 0;
- if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
- pid = req->cfile->pid;
- else
- pid = current->tgid; // Ummm... This may be a workqueue
-
cifs_dbg(FYI, "%s: op=%08x[%x] mapping=%p len=%zu/%zu\n",
__func__, rreq->debug_id, subreq->debug_index, rreq->mapping,
subreq->transferred, subreq->len);
@@ -199,7 +193,6 @@ static void cifs_req_issue_read(struct netfs_io_subrequest *subreq)
}
__set_bit(NETFS_SREQ_CLEAR_TAIL, &subreq->flags);
- rdata->pid = pid;
rc = rdata->server->ops->async_readv(rdata);
out:
@@ -236,12 +229,15 @@ static int cifs_init_request(struct netfs_io_request *rreq, struct file *file)
rreq->rsize = cifs_sb->ctx->rsize;
rreq->wsize = cifs_sb->ctx->wsize;
+ req->pid = current->tgid; // Ummm... This may be a workqueue
if (file) {
open_file = file->private_data;
rreq->netfs_priv = file->private_data;
req->cfile = cifsFileInfo_get(open_file);
req->server = cifs_pick_channel(tlink_tcon(req->cfile->tlink)->ses);
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
+ req->pid = req->cfile->pid;
} else if (rreq->origin != NETFS_WRITEBACK) {
WARN_ON_ONCE(1);
return -EIO;
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index e213cecd5094..2ae2dbb6202b 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -4621,7 +4621,7 @@ smb2_async_readv(struct cifs_io_subrequest *rdata)
io_parms.length = rdata->subreq.len;
io_parms.persistent_fid = rdata->req->cfile->fid.persistent_fid;
io_parms.volatile_fid = rdata->req->cfile->fid.volatile_fid;
- io_parms.pid = rdata->pid;
+ io_parms.pid = rdata->req->pid;
rc = smb2_new_read_req(
(void **) &buf, &total_len, &io_parms, rdata, 0, 0);
@@ -4873,7 +4873,7 @@ smb2_async_writev(struct cifs_io_subrequest *wdata)
.length = wdata->subreq.len,
.persistent_fid = wdata->req->cfile->fid.persistent_fid,
.volatile_fid = wdata->req->cfile->fid.volatile_fid,
- .pid = wdata->pid,
+ .pid = wdata->req->pid,
};
io_parms = &_io_parms;
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