The array is no longer needed. We just need a single kvec to hold the
header for signature checking.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/cifs/cifsglob.h | 3 +--
fs/cifs/cifssmb.c | 29 ++++++++++++++---------------
fs/cifs/file.c | 9 ---------
fs/cifs/smb2pdu.c | 12 ++++++------
4 files changed, 21 insertions(+), 32 deletions(-)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 48a5eba..de98a1a 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -980,10 +980,9 @@ struct cifs_readdata {
int (*read_into_pages)(struct TCP_Server_Info *server,
struct cifs_readdata *rdata,
unsigned int len);
+ struct kvec iov;
unsigned int pagesz;
unsigned int tailsz;
- unsigned int nr_iov;
- struct kvec *iov;
unsigned int nr_pages;
struct page *pages[];
};
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 5d7bd75..88bbb3e 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1436,10 +1436,10 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
len = min_t(unsigned int, buflen, server->vals->read_rsp_size) -
HEADER_SIZE(server) + 1;
- rdata->iov[0].iov_base = buf + HEADER_SIZE(server) - 1;
- rdata->iov[0].iov_len = len;
+ rdata->iov.iov_base = buf + HEADER_SIZE(server) - 1;
+ rdata->iov.iov_len = len;
- length = cifs_readv_from_socket(server, rdata->iov, 1, len);
+ length = cifs_readv_from_socket(server, &rdata->iov, 1, len);
if (length < 0)
return length;
server->total_read += length;
@@ -1485,20 +1485,19 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
len = data_offset - server->total_read;
if (len > 0) {
/* read any junk before data into the rest of smallbuf */
- rdata->iov[0].iov_base = buf + server->total_read;
- rdata->iov[0].iov_len = len;
- length = cifs_readv_from_socket(server, rdata->iov, 1, len);
+ rdata->iov.iov_base = buf + server->total_read;
+ rdata->iov.iov_len = len;
+ length = cifs_readv_from_socket(server, &rdata->iov, 1, len);
if (length < 0)
return length;
server->total_read += length;
}
/* set up first iov for signature check */
- rdata->iov[0].iov_base = buf;
- rdata->iov[0].iov_len = server->total_read;
- rdata->nr_iov = 1;
+ rdata->iov.iov_base = buf;
+ rdata->iov.iov_len = server->total_read;
cFYI(1, "0: iov_base=%p iov_len=%zu",
- rdata->iov[0].iov_base, rdata->iov[0].iov_len);
+ rdata->iov.iov_base, rdata->iov.iov_len);
/* how much data is in the response? */
data_len = server->ops->read_data_length(buf);
@@ -1532,8 +1531,8 @@ cifs_readv_callback(struct mid_q_entry *mid)
struct cifs_readdata *rdata = mid->callback_data;
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
struct TCP_Server_Info *server = tcon->ses->server;
- struct smb_rqst rqst = { .rq_iov = rdata->iov,
- .rq_nvec = rdata->nr_iov,
+ struct smb_rqst rqst = { .rq_iov = &rdata->iov,
+ .rq_nvec = 1,
.rq_pages = rdata->pages,
.rq_npages = rdata->nr_pages,
.rq_pagesz = rdata->pagesz,
@@ -1580,7 +1579,7 @@ cifs_async_readv(struct cifs_readdata *rdata)
READ_REQ *smb = NULL;
int wct;
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
- struct smb_rqst rqst = { .rq_iov = rdata->iov,
+ struct smb_rqst rqst = { .rq_iov = &rdata->iov,
.rq_nvec = 1 };
cFYI(1, "%s: offset=%llu bytes=%u", __func__,
@@ -1621,8 +1620,8 @@ cifs_async_readv(struct cifs_readdata *rdata)
}
/* 4 for RFC1001 length + 1 for BCC */
- rdata->iov[0].iov_base = smb;
- rdata->iov[0].iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
+ rdata->iov.iov_base = smb;
+ rdata->iov.iov_len = be32_to_cpu(smb->hdr.smb_buf_length) + 4;
kref_get(&rdata->refcount);
rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive,
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 8b23cb2..18098c8 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2413,11 +2413,6 @@ static struct cifs_readdata *
cifs_readdata_alloc(unsigned int nr_pages, work_func_t complete)
{
struct cifs_readdata *rdata;
- struct kvec *iov;
-
- iov = kzalloc(sizeof(*iov) * (nr_pages + 1), GFP_KERNEL);
- if (!iov)
- return (struct cifs_readdata *)iov;
rdata = kzalloc(sizeof(*rdata) + (sizeof(struct page *) * nr_pages),
GFP_KERNEL);
@@ -2426,9 +2421,6 @@ cifs_readdata_alloc(unsigned int nr_pages, work_func_t complete)
INIT_LIST_HEAD(&rdata->list);
init_completion(&rdata->done);
INIT_WORK(&rdata->work, complete);
- rdata->iov = iov;
- } else {
- kfree(iov);
}
return rdata;
@@ -2443,7 +2435,6 @@ cifs_readdata_release(struct kref *refcount)
if (rdata->cfile)
cifsFileInfo_put(rdata->cfile);
- kfree(rdata->iov);
kfree(rdata);
}
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index ebd65e6..a2393a9 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1297,9 +1297,9 @@ smb2_readv_callback(struct mid_q_entry *mid)
struct cifs_readdata *rdata = mid->callback_data;
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
struct TCP_Server_Info *server = tcon->ses->server;
- struct smb2_hdr *buf = (struct smb2_hdr *)rdata->iov[0].iov_base;
+ struct smb2_hdr *buf = (struct smb2_hdr *)rdata->iov.iov_base;
unsigned int credits_received = 1;
- struct smb_rqst rqst = { .rq_iov = rdata->iov,
+ struct smb_rqst rqst = { .rq_iov = &rdata->iov,
.rq_nvec = 1,
.rq_pages = rdata->pages,
.rq_npages = rdata->nr_pages,
@@ -1346,7 +1346,7 @@ smb2_async_readv(struct cifs_readdata *rdata)
int rc;
struct smb2_hdr *buf;
struct cifs_io_parms io_parms;
- struct smb_rqst rqst = { .rq_iov = rdata->iov,
+ struct smb_rqst rqst = { .rq_iov = &rdata->iov,
.rq_nvec = 1 };
cFYI(1, "%s: offset=%llu bytes=%u", __func__,
@@ -1358,13 +1358,13 @@ smb2_async_readv(struct cifs_readdata *rdata)
io_parms.persistent_fid = rdata->cfile->fid.persistent_fid;
io_parms.volatile_fid = rdata->cfile->fid.volatile_fid;
io_parms.pid = rdata->pid;
- rc = smb2_new_read_req(&rdata->iov[0], &io_parms, 0, 0);
+ rc = smb2_new_read_req(&rdata->iov, &io_parms, 0, 0);
if (rc)
return rc;
- buf = (struct smb2_hdr *)rdata->iov[0].iov_base;
+ buf = (struct smb2_hdr *)rdata->iov.iov_base;
/* 4 for rfc1002 length field */
- rdata->iov[0].iov_len = get_rfc1002_length(rdata->iov[0].iov_base) + 4;
+ rdata->iov.iov_len = get_rfc1002_length(rdata->iov.iov_base) + 4;
kref_get(&rdata->refcount);
rc = cifs_call_async(io_parms.tcon->ses->server, &rqst,
--
1.7.11.2
--
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