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| author |   Ilya Dryomov <idryomov@gmail.com> | 2016-04-27 14:15:51 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-05-26 00:36:21 +0200 |
| commit | 13d1ad16d05eebb4db977eb955716b9da2c19fbd (patch) | |
| tree | d48af8a4ae4ce0cc9407b7c72376dc518fbceea3 /drivers/block | |
| parent | libceph: grab snapc in ceph_osdc_alloc_request() (diff) | |
| download | linux-dev-13d1ad16d05eebb4db977eb955716b9da2c19fbd.tar.xz linux-dev-13d1ad16d05eebb4db977eb955716b9da2c19fbd.zip | |
libceph: move message allocation out of ceph_osdc_alloc_request()
The size of ->r_request and ->r_reply messages depends on the size of
the object name (ceph_object_id), while the size of ceph_osd_request is
fixed. Move message allocation into a separate function that would
have to be called after ceph_object_id and ceph_object_locator (which
is also going to become variable in size with RADOS namespaces) have
been filled in:
req = ceph_osdc_alloc_request(...);
<fill in req->r_base_oid>
<fill in req->r_base_oloc>
ceph_osdc_alloc_messages(req);
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index c3089f32a392..bda4deade82e 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1954,7 +1954,7 @@ static struct ceph_osd_request *rbd_osd_req_create( osd_req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false, GFP_NOIO); if (!osd_req) - return NULL; /* ENOMEM */ + goto fail; if (op_type == OBJ_OP_WRITE || op_type == OBJ_OP_DISCARD) osd_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; @@ -1967,7 +1967,14 @@ static struct ceph_osd_request *rbd_osd_req_create( osd_req->r_base_oloc.pool = ceph_file_layout_pg_pool(rbd_dev->layout); ceph_oid_set_name(&osd_req->r_base_oid, obj_request->object_name); + if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO)) + goto fail; + return osd_req; + +fail: + ceph_osdc_put_request(osd_req); + return NULL; } /* @@ -2003,7 +2010,7 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request) osd_req = ceph_osdc_alloc_request(osdc, snapc, num_osd_ops, false, GFP_NOIO); if (!osd_req) - return NULL; /* ENOMEM */ + goto fail; osd_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; osd_req->r_callback = rbd_osd_req_callback; @@ -2012,7 +2019,14 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request) osd_req->r_base_oloc.pool = ceph_file_layout_pg_pool(rbd_dev->layout); ceph_oid_set_name(&osd_req->r_base_oid, obj_request->object_name); + if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO)) + goto fail; + return osd_req; + +fail: + ceph_osdc_put_request(osd_req); + return NULL; } |