* [PATCH 1/2] libceph: don't set flags in ceph_osdc_alloc_request()
2012-11-14 16:21 [PATCH 0/2] libceph: simplify ceph_osdc_alloc_request() Alex Elder
@ 2012-11-14 16:23 ` Alex Elder
2012-11-14 16:23 ` [PATCH 2/2] libceph: don't set pages or bio " Alex Elder
1 sibling, 0 replies; 3+ messages in thread
From: Alex Elder @ 2012-11-14 16:23 UTC (permalink / raw)
To: ceph-devel@vger.kernel.org
The only thing ceph_osdc_alloc_request() really does with the
flags value it is passed is assign it to the newly-created
osd request structure. Do that in the caller instead.
Both callers subsequently call ceph_osdc_build_request(), so have
that function (instead of ceph_osdc_alloc_request()) issue a warning
if a request comes through with neither the read nor write flags set.
Signed-off-by: Alex Elder <elder@inktank.com>
---
drivers/block/rbd.c | 3 ++-
include/linux/ceph/osd_client.h | 1 -
net/ceph/osd_client.c | 11 ++++-------
3 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 2d10504..b6b1522 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1150,13 +1150,14 @@ static int rbd_do_request(struct request *rq,
(unsigned long long) len, coll, coll_index);
osdc = &rbd_dev->rbd_client->client->osdc;
- osd_req = ceph_osdc_alloc_request(osdc, flags, snapc, ops,
+ osd_req = ceph_osdc_alloc_request(osdc, snapc, ops,
false, GFP_NOIO, pages, bio);
if (!osd_req) {
ret = -ENOMEM;
goto done_pages;
}
+ osd_req->r_flags = flags;
osd_req->r_callback = rbd_cb;
rbd_req->rq = rq;
diff --git a/include/linux/ceph/osd_client.h
b/include/linux/ceph/osd_client.h
index fe3a6e8..6ddda5b 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -213,7 +213,6 @@ extern int ceph_calc_raw_layout(struct
ceph_file_layout *layout,
struct ceph_osd_req_op *op);
extern struct ceph_osd_request *ceph_osdc_alloc_request(struct
ceph_osd_client *osdc,
- int flags,
struct ceph_snap_context *snapc,
struct ceph_osd_req_op *ops,
bool use_mempool,
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index baaec06..3e82e61 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -163,7 +163,6 @@ static int get_num_ops(struct ceph_osd_req_op *ops)
}
struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client
*osdc,
- int flags,
struct ceph_snap_context *snapc,
struct ceph_osd_req_op *ops,
bool use_mempool,
@@ -200,10 +199,6 @@ struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
INIT_LIST_HEAD(&req->r_req_lru_item);
INIT_LIST_HEAD(&req->r_osd_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);
@@ -339,6 +334,8 @@ void ceph_osdc_build_request(struct ceph_osd_request
*req,
u64 data_len = 0;
int i;
+ WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
+
head = msg->front.iov_base;
head->snapid = cpu_to_le64(snap_id);
op = (void *)(head + 1);
@@ -434,12 +431,12 @@ struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client *osdc,
} else
ops[1].op = 0;
- req = ceph_osdc_alloc_request(osdc, flags,
- snapc, ops,
+ req = ceph_osdc_alloc_request(osdc, snapc, ops,
use_mempool,
GFP_NOFS, NULL, NULL);
if (!req)
return ERR_PTR(-ENOMEM);
+ req->r_flags = flags;
/* calculate max write size */
r = calc_layout(vino, layout, off, plen, req, ops);
--
1.7.9.5
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH 2/2] libceph: don't set pages or bio in ceph_osdc_alloc_request()
2012-11-14 16:21 [PATCH 0/2] libceph: simplify ceph_osdc_alloc_request() Alex Elder
2012-11-14 16:23 ` [PATCH 1/2] libceph: don't set flags in ceph_osdc_alloc_request() Alex Elder
@ 2012-11-14 16:23 ` Alex Elder
1 sibling, 0 replies; 3+ messages in thread
From: Alex Elder @ 2012-11-14 16:23 UTC (permalink / raw)
To: ceph-devel@vger.kernel.org
Only one of the two callers of ceph_osdc_alloc_request() provides
page or bio data for its payload. And essentially all that function
was doing with those arguments was assigning them to fields in the
osd request structure.
Simplify ceph_osdc_alloc_request() by having the caller take care of
making those assignments
Signed-off-by: Alex Elder <elder@inktank.com>
---
drivers/block/rbd.c | 8 ++++++--
include/linux/ceph/osd_client.h | 4 +---
net/ceph/osd_client.c | 15 ++-------------
3 files changed, 9 insertions(+), 18 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index b6b1522..bdb099c 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1150,14 +1150,18 @@ static int rbd_do_request(struct request *rq,
(unsigned long long) len, coll, coll_index);
osdc = &rbd_dev->rbd_client->client->osdc;
- osd_req = ceph_osdc_alloc_request(osdc, snapc, ops,
- false, GFP_NOIO, pages, bio);
+ osd_req = ceph_osdc_alloc_request(osdc, snapc, ops, false, GFP_NOIO);
if (!osd_req) {
ret = -ENOMEM;
goto done_pages;
}
osd_req->r_flags = flags;
+ osd_req->r_pages = pages;
+ if (bio) {
+ osd_req->r_bio = bio;
+ bio_get(osd_req->r_bio);
+ }
osd_req->r_callback = rbd_cb;
rbd_req->rq = rq;
diff --git a/include/linux/ceph/osd_client.h
b/include/linux/ceph/osd_client.h
index 6ddda5b..75f56d3 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -216,9 +216,7 @@ extern struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client *
struct ceph_snap_context *snapc,
struct ceph_osd_req_op *ops,
bool use_mempool,
- gfp_t gfp_flags,
- struct page **pages,
- struct bio *bio);
+ gfp_t gfp_flags);
extern void ceph_osdc_build_request(struct ceph_osd_request *req,
u64 off, u64 len,
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 3e82e61..5ed9c92 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -166,9 +166,7 @@ struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
struct ceph_snap_context *snapc,
struct ceph_osd_req_op *ops,
bool use_mempool,
- gfp_t gfp_flags,
- struct page **pages,
- struct bio *bio)
+ gfp_t gfp_flags)
{
struct ceph_osd_request *req;
struct ceph_msg *msg;
@@ -229,13 +227,6 @@ struct ceph_osd_request
*ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
memset(msg->front.iov_base, 0, msg->front.iov_len);
req->r_request = msg;
- req->r_pages = pages;
-#ifdef CONFIG_BLOCK
- if (bio) {
- req->r_bio = bio;
- bio_get(req->r_bio);
- }
-#endif
return req;
}
@@ -431,9 +422,7 @@ struct ceph_osd_request
*ceph_osdc_new_request(struct ceph_osd_client *osdc,
} else
ops[1].op = 0;
- req = ceph_osdc_alloc_request(osdc, snapc, ops,
- use_mempool,
- GFP_NOFS, NULL, NULL);
+ req = ceph_osdc_alloc_request(osdc, snapc, ops, use_mempool, GFP_NOFS);
if (!req)
return ERR_PTR(-ENOMEM);
req->r_flags = flags;
--
1.7.9.5
^ permalink raw reply related [flat|nested] 3+ messages in thread