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libceph: set page info with byte length 

When setting page array information for message data, provide the
byte length rather than the page count ceph_msg_data_set_pages().

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-03-07 15:38:26 -06:00 committed by Sage Weil
parent 02afca6ca0
commit f1baeb2b9f
4 changed files with 8 additions and 14 deletions
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2
fs/ceph/mds_client.c
View File

@ -1721,7 +1721,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
ceph_msg_data_set_pages(msg, req->r_pages, req->r_num_pages, 0);
ceph_msg_data_set_pages(msg, req->r_pages, req->r_data_len, 0);
msg->hdr.data_len = cpu_to_le32(req->r_data_len);
msg->hdr.data_off = cpu_to_le16(0);

2
include/linux/ceph/messenger.h
View File

@ -220,7 +220,7 @@ extern void ceph_msg_revoke_incoming(struct ceph_msg *msg);
extern void ceph_con_keepalive(struct ceph_connection *con);
extern void ceph_msg_data_set_pages(struct ceph_msg *msg, struct page **pages,
unsigned int page_count, size_t alignment);
size_t length, size_t alignment);
extern struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags,
bool can_fail);

4
net/ceph/messenger.c
View File

@ -2690,13 +2690,13 @@ void ceph_con_keepalive(struct ceph_connection *con)
EXPORT_SYMBOL(ceph_con_keepalive);
void ceph_msg_data_set_pages(struct ceph_msg *msg, struct page **pages,
unsigned int page_count, size_t alignment)
size_t length, size_t alignment)
{
/* BUG_ON(msg->pages); */
/* BUG_ON(msg->page_count); */
msg->pages = pages;
msg->page_count = page_count;
msg->page_count = calc_pages_for((u64)alignment, (u64)length);
msg->page_alignment = alignment & ~PAGE_MASK;
}
EXPORT_SYMBOL(ceph_msg_data_set_pages);

14
net/ceph/osd_client.c
View File

@ -1758,12 +1758,9 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
osd_data = &req->r_data_out;
if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
unsigned int page_count;
page_count = calc_pages_for((u64)osd_data->alignment,
(u64)osd_data->length);
BUG_ON(osd_data->length > (u64) SIZE_MAX);
ceph_msg_data_set_pages(req->r_request, osd_data->pages,
page_count, osd_data->alignment);
osd_data->length, osd_data->alignment);
#ifdef CONFIG_BLOCK
} else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {
req->r_request->bio = osd_data->bio;
@ -2119,8 +2116,6 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
struct ceph_osd_data *osd_data = &req->r_data_in;
if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) {
unsigned int page_count;
if (osd_data->pages &&
unlikely(osd_data->length < data_len)) {
@ -2132,10 +2127,9 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
m = NULL;
goto out;
}
page_count = calc_pages_for((u64)osd_data->alignment,
(u64)osd_data->length);
BUG_ON(osd_data->length > (u64) SIZE_MAX);
ceph_msg_data_set_pages(m, osd_data->pages,
osd_data->num_pages, osd_data->alignment);
osd_data->length, osd_data->alignment);
#ifdef CONFIG_BLOCK
} else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) {
m->bio = osd_data->bio;