#include <linux/sched.h>
#include <linux/circ_buf.h>
#include <linux/iversion.h>
+#include <linux/netfs.h>
#include "internal.h"
#include "afs_fs.h"
#include "xdr_fs.h"
struct afs_vnode_param *vp = &op->file[0];
struct afs_read *req = op->fetch.req;
const __be32 *bp;
- unsigned int size;
int ret;
- _enter("{%u,%zu/%llu}",
- call->unmarshall, iov_iter_count(call->iter), req->actual_len);
+ _enter("{%u,%zu,%zu/%llu}",
+ call->unmarshall, call->iov_len, iov_iter_count(call->iter),
+ req->actual_len);
switch (call->unmarshall) {
case 0:
req->actual_len = 0;
- req->index = 0;
- req->offset = req->pos & (PAGE_SIZE - 1);
call->unmarshall++;
if (call->operation_ID == FSFETCHDATA64) {
afs_extract_to_tmp64(call);
}
fallthrough;
- /* extract the returned data length */
+ /* Extract the returned data length into
+ * ->actual_len. This may indicate more or less data than was
+ * requested will be returned.
+ */
case 1:
_debug("extract data length");
ret = afs_extract_data(call, true);
req->actual_len = be64_to_cpu(call->tmp64);
_debug("DATA length: %llu", req->actual_len);
- req->remain = min(req->len, req->actual_len);
- if (req->remain == 0)
+
+ if (req->actual_len == 0)
goto no_more_data;
+ call->iter = req->iter;
+ call->iov_len = min(req->actual_len, req->len);
call->unmarshall++;
-
- begin_page:
- ASSERTCMP(req->index, <, req->nr_pages);
- if (req->remain > PAGE_SIZE - req->offset)
- size = PAGE_SIZE - req->offset;
- else
- size = req->remain;
- call->bvec[0].bv_len = size;
- call->bvec[0].bv_offset = req->offset;
- call->bvec[0].bv_page = req->pages[req->index];
- iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
- ASSERTCMP(size, <=, PAGE_SIZE);
fallthrough;
/* extract the returned data */
case 2:
_debug("extract data %zu/%llu",
- iov_iter_count(call->iter), req->remain);
+ iov_iter_count(call->iter), req->actual_len);
ret = afs_extract_data(call, true);
if (ret < 0)
return ret;
- req->remain -= call->bvec[0].bv_len;
- req->offset += call->bvec[0].bv_len;
- ASSERTCMP(req->offset, <=, PAGE_SIZE);
- if (req->offset == PAGE_SIZE) {
- req->offset = 0;
- req->index++;
- if (req->remain > 0)
- goto begin_page;
- }
- ASSERTCMP(req->remain, ==, 0);
+ call->iter = &call->def_iter;
if (req->actual_len <= req->len)
goto no_more_data;
break;
}
- for (; req->index < req->nr_pages; req->index++) {
- if (req->offset < PAGE_SIZE)
- zero_user_segment(req->pages[req->index],
- req->offset, PAGE_SIZE);
- req->offset = 0;
- }
-
- if (req->page_done)
- for (req->index = 0; req->index < req->nr_pages; req->index++)
- req->page_done(req);
-
_leave(" = 0 [done]");
return 0;
}
if (!call)
return afs_op_nomem(op);
+ req->call_debug_id = call->debug_id;
+
/* marshall the parameters */
bp = call->request;
bp[0] = htonl(FSFETCHDATA);
/*
* store a set of pages to a very large file
*/
-static void afs_fs_store_data64(struct afs_operation *op,
- loff_t pos, loff_t size, loff_t i_size)
+static void afs_fs_store_data64(struct afs_operation *op)
{
struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
if (!call)
return afs_op_nomem(op);
- call->send_pages = true;
+ call->write_iter = op->store.write_iter;
/* marshall the parameters */
bp = call->request;
*bp++ = 0; /* unix mode */
*bp++ = 0; /* segment size */
- *bp++ = htonl(upper_32_bits(pos));
- *bp++ = htonl(lower_32_bits(pos));
- *bp++ = htonl(upper_32_bits(size));
- *bp++ = htonl(lower_32_bits(size));
- *bp++ = htonl(upper_32_bits(i_size));
- *bp++ = htonl(lower_32_bits(i_size));
+ *bp++ = htonl(upper_32_bits(op->store.pos));
+ *bp++ = htonl(lower_32_bits(op->store.pos));
+ *bp++ = htonl(upper_32_bits(op->store.size));
+ *bp++ = htonl(lower_32_bits(op->store.size));
+ *bp++ = htonl(upper_32_bits(op->store.i_size));
+ *bp++ = htonl(lower_32_bits(op->store.i_size));
trace_afs_make_fs_call(call, &vp->fid);
afs_make_op_call(op, call, GFP_NOFS);
}
/*
- * store a set of pages
+ * Write data to a file on the server.
*/
void afs_fs_store_data(struct afs_operation *op)
{
struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- loff_t size, pos, i_size;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- size = (loff_t)op->store.last_to - (loff_t)op->store.first_offset;
- if (op->store.first != op->store.last)
- size += (loff_t)(op->store.last - op->store.first) << PAGE_SHIFT;
- pos = (loff_t)op->store.first << PAGE_SHIFT;
- pos += op->store.first_offset;
-
- i_size = i_size_read(&vp->vnode->vfs_inode);
- if (pos + size > i_size)
- i_size = size + pos;
-
_debug("size %llx, at %llx, i_size %llx",
- (unsigned long long) size, (unsigned long long) pos,
- (unsigned long long) i_size);
+ (unsigned long long)op->store.size,
+ (unsigned long long)op->store.pos,
+ (unsigned long long)op->store.i_size);
- if (upper_32_bits(pos) || upper_32_bits(i_size) || upper_32_bits(size) ||
- upper_32_bits(pos + size))
- return afs_fs_store_data64(op, pos, size, i_size);
+ if (upper_32_bits(op->store.pos) ||
+ upper_32_bits(op->store.size) ||
+ upper_32_bits(op->store.i_size))
+ return afs_fs_store_data64(op);
call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData,
(4 + 6 + 3) * 4,
if (!call)
return afs_op_nomem(op);
- call->send_pages = true;
+ call->write_iter = op->store.write_iter;
/* marshall the parameters */
bp = call->request;
*bp++ = 0; /* unix mode */
*bp++ = 0; /* segment size */
- *bp++ = htonl(lower_32_bits(pos));
- *bp++ = htonl(lower_32_bits(size));
- *bp++ = htonl(lower_32_bits(i_size));
+ *bp++ = htonl(lower_32_bits(op->store.pos));
+ *bp++ = htonl(lower_32_bits(op->store.size));
+ *bp++ = htonl(lower_32_bits(op->store.i_size));
trace_afs_make_fs_call(call, &vp->fid);
afs_make_op_call(op, call, GFP_NOFS);
projects / linux-2.6-microblaze.git / blobdiff