static void calc_total_layout(LAYOUT *base)
{
calc_layout(base->next);
calc_fills(base->next, 0, 0);
calc_aligns(base->next);
calc_offsets(base->next, 0, 0);
}
struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
struct ceph_file_layout *layout,
struct ceph_vino vino,
u64 off, u64 *plen,
int opcode, int flags,
struct ceph_snap_context *snapc,
int do_sync,
u32 truncate_seq,
u64 truncate_size,
struct timespec *mtime,
bool use_mempool, int num_reply,
int page_align)
{
struct ceph_osd_req_op ops[3];
struct ceph_osd_request *req;
int r;
ops[0].op = opcode;
ops[0].extent.truncate_seq = truncate_seq;
ops[0].extent.truncate_size = truncate_size;
ops[0].payload_len = 0;
if (do_sync) {
ops[1].op = CEPH_OSD_OP_STARTSYNC;
ops[1].payload_len = 0;
ops[2].op = 0;
} else
ops[1].op = 0;
req = ceph_osdc_alloc_request(osdc, flags,
snapc, ops,
use_mempool,
GFP_NOFS, NULL, NULL);
if (!req)
return NULL;
r = calc_layout(osdc, vino, layout, off, plen, req, ops);
if (r < 0)
return ERR_PTR(r);
req->r_file_layout = *layout;
req->r_num_pages = calc_pages_for(page_align, *plen);
req->r_page_alignment = page_align;
ceph_osdc_build_request(req, off, plen, ops,
snapc,
mtime,
req->r_oid, req->r_oid_len);
return req;
}
/*
* build new request AND message, calculate layout, and adjust file
* extent as needed.
*
* if the file was recently truncated, we include information about its
* old and new size so that the object can be updated appropriately. (we
* avoid synchronously deleting truncated objects because it's slow.)
*
* if @do_sync, include a 'startsync' command so that the osd will flush
* data quickly.
*/
struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
struct ceph_file_layout *layout,
struct ceph_vino vino,
u64 off, u64 *plen,
int opcode, int flags,
struct ceph_snap_context *snapc,
int do_sync,
u32 truncate_seq,
u64 truncate_size,
struct timespec *mtime,
bool use_mempool, int num_reply,
int page_align)
{
struct ceph_osd_req_op ops[3];
struct ceph_osd_request *req;
ops[0].op = opcode;
ops[0].extent.truncate_seq = truncate_seq;
ops[0].extent.truncate_size = truncate_size;
ops[0].payload_len = 0;
if (do_sync) {
ops[1].op = CEPH_OSD_OP_STARTSYNC;
ops[1].payload_len = 0;
ops[2].op = 0;
} else
ops[1].op = 0;
req = ceph_osdc_alloc_request(osdc, flags,
snapc, ops,
use_mempool,
GFP_NOFS, NULL, NULL);
if (!req)
return NULL;
/* calculate max write size */
calc_layout(osdc, vino, layout, off, plen, req, ops);
req->r_file_layout = *layout; /* keep a copy */
/* in case it differs from natural (file) alignment that
calc_layout filled in for us */
req->r_num_pages = calc_pages_for(page_align, *plen);
req->r_page_alignment = page_align;
ceph_osdc_build_request(req, off, plen, ops,
snapc,
mtime,
req->r_oid, req->r_oid_len);
return req;
}
/*
* build new request AND message, calculate layout, and adjust file
* extent as needed.
*
* if the file was recently truncated, we include information about its
* old and new size so that the object can be updated appropriately. (we
* avoid synchronously deleting truncated objects because it's slow.)
*
* if @do_sync, include a 'startsync' command so that the osd will flush
* data quickly.
*/
struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
struct ceph_file_layout *layout,
struct ceph_vino vino,
u64 off, u64 *plen,
int opcode, int flags,
struct ceph_snap_context *snapc,
int do_sync,
u32 truncate_seq,
u64 truncate_size,
struct timespec *mtime,
bool use_mempool, int num_reply)
{
struct ceph_osd_request *req;
struct ceph_msg *msg;
struct ceph_osd_request_head *head;
struct ceph_osd_op *op;
void *p;
int num_op = 1 + do_sync;
size_t msg_size = sizeof(*head) + num_op*sizeof(*op);
int i;
if (use_mempool) {
req = mempool_alloc(osdc->req_mempool, GFP_NOFS);
memset(req, 0, sizeof(*req));
} else {
req = kzalloc(sizeof(*req), GFP_NOFS);
}
if (req == NULL)
return NULL;
req->r_osdc = osdc;
req->r_mempool = use_mempool;
kref_init(&req->r_kref);
init_completion(&req->r_completion);
init_completion(&req->r_safe_completion);
INIT_LIST_HEAD(&req->r_unsafe_item);
req->r_flags = flags;
WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
/* create reply message */
if (use_mempool)
msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0);
else
msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY,
OSD_OPREPLY_FRONT_LEN, GFP_NOFS);
if (!msg) {
ceph_osdc_put_request(req);
return NULL;
}
req->r_reply = msg;
/* create request message; allow space for oid */
msg_size += 40;
if (snapc)
msg_size += sizeof(u64) * snapc->num_snaps;
if (use_mempool)
msg = ceph_msgpool_get(&osdc->msgpool_op, 0);
else
msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, GFP_NOFS);
if (!msg) {
ceph_osdc_put_request(req);
return NULL;
}
msg->hdr.type = cpu_to_le16(CEPH_MSG_OSD_OP);
memset(msg->front.iov_base, 0, msg->front.iov_len);
head = msg->front.iov_base;
op = (void *)(head + 1);
p = (void *)(op + num_op);
req->r_request = msg;
req->r_snapc = ceph_get_snap_context(snapc);
head->client_inc = cpu_to_le32(1); /* always, for now. */
head->flags = cpu_to_le32(flags);
if (flags & CEPH_OSD_FLAG_WRITE)
ceph_encode_timespec(&head->mtime, mtime);
head->num_ops = cpu_to_le16(num_op);
op->op = cpu_to_le16(opcode);
/* calculate max write size */
calc_layout(osdc, vino, layout, off, plen, req);
req->r_file_layout = *layout; /* keep a copy */
if (flags & CEPH_OSD_FLAG_WRITE) {
req->r_request->hdr.data_off = cpu_to_le16(off);
req->r_request->hdr.data_len = cpu_to_le32(*plen);
op->payload_len = cpu_to_le32(*plen);
}
op->extent.truncate_size = cpu_to_le64(truncate_size);
op->extent.truncate_seq = cpu_to_le32(truncate_seq);
/* fill in oid */
head->object_len = cpu_to_le32(req->r_oid_len);
memcpy(p, req->r_oid, req->r_oid_len);
p += req->r_oid_len;
if (do_sync) {
op++;
op->op = cpu_to_le16(CEPH_OSD_OP_STARTSYNC);
}
if (snapc) {
head->snap_seq = cpu_to_le64(snapc->seq);
head->num_snaps = cpu_to_le32(snapc->num_snaps);
for (i = 0; i < snapc->num_snaps; i++) {
put_unaligned_le64(snapc->snaps[i], p);
p += sizeof(u64);
}
}
BUG_ON(p > msg->front.iov_base + msg->front.iov_len);
msg_size = p - msg->front.iov_base;
msg->front.iov_len = msg_size;
msg->hdr.front_len = cpu_to_le32(msg_size);
return req;
}
/*
* Calc the layout of all siblings
* If they have children, do those first
*/
static void calc_layout(LAYOUT *layout)
{
int width, height;
int width_common, height_common;
int direction;
LAYOUT *tmp;
direction = layout->direction;
layout->x = layout->borderx;
layout->y = layout->border_top;
tmp = layout;
if (layout->child)
calc_layout(layout->child);
width_common = layout->width;
height_common = layout->height;
while (layout->next) {
if (layout->next->child)
calc_layout(layout->next->child);
if (direction == PACK_HORIZONTAL) {
layout->next->x = layout->x + layout->width + layout->marginx;
layout->next->y = layout->y;
}
else {
layout->next->x = layout->x;
layout->next->y = layout->y + layout->height + layout->marginy;
}
width_common = max(width_common, layout->next->width);
height_common = max(height_common, layout->next->height);
layout = layout->next;
}
if (direction == PACK_HORIZONTAL) {
LAYOUT *tmp2 = tmp;
if (tmp->flag & GRID_X) {
int old_x;
old_x = tmp->x;
tmp->width = width_common;
while (tmp->next) {
tmp = tmp->next;
tmp->width = width_common;
tmp->x = old_x + width_common + layout->marginx;
old_x = tmp->x;
}
}
tmp = tmp2;
if (tmp->flag & GRID_Y) {
tmp->height = height_common;
while (tmp->next) {
tmp = tmp->next;
tmp->height = height_common;
}
}
width = layout->x + layout->width + layout->borderx;
height = height_common + layout->border_top + layout->border_bottom;
}
else {
LAYOUT *tmp2 = tmp;
if (tmp->flag & GRID_Y) {
int old_y;
old_y = tmp->y;
tmp->height = height_common;
while (tmp->next) {
tmp = tmp->next;
tmp->height = height_common;
tmp->y = old_y + height_common + layout->marginy;
old_y = tmp->y;
}
}
tmp = tmp2;
if (tmp->flag & GRID_X) {
tmp->width = width_common;
while (tmp->next) {
tmp = tmp->next;
tmp->width = width_common;
}
}
width = width_common + 2 * layout->borderx;
height = layout->y + layout->height + layout->border_bottom;
}
/*
* Update parents, and grand parents
*/
while (layout->parent) {
layout->parent->width = max(layout->parent->width, width);
layout->parent->height = max(layout->parent->height, height);
layout = layout->parent;
if (layout->direction == PACK_HORIZONTAL) {
height += layout->border_top + layout->border_bottom;
}
else {
width += 2 * layout->borderx;
}
}
}
