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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 11:09:13 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 11:09:13 -0700
commit240cd6a817bd855e3f1e615ed9ae16407f8cfce6 (patch)
treeda7d6267d549cd0fbdff3f30032720b416d1ff3d /drivers/block
parent3021112598d2b722eee54d8a662fea2089abbdbc (diff)
parenta30be7cb2ccb995ad5e67fd4b548f11fe37fc8b1 (diff)
downloadlinux-240cd6a817bd855e3f1e615ed9ae16407f8cfce6.tar.bz2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph updates from Sage Weil: "The biggest chunk is a series of patches from Ilya that add support for new Ceph osd and crush map features, including some new tunables, primary affinity, and the new encoding that is needed for erasure coding support. This brings things into parity with the server side and the looming firefly release. There is also support for allocation hints in RBD that help limit fragmentation on the server side. There is also a series of patches from Zheng fixing NFS reexport, directory fragmentation support, flock vs fnctl behavior, and some issues with clustered MDS. Finally, there are some miscellaneous fixes from Yunchuan Wen for fscache, Fabian Frederick for ACLs, and from me for fsync(dirfd) behavior" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (79 commits) ceph: skip invalid dentry during dcache readdir libceph: dump pool {read,write}_tier to debugfs libceph: output primary affinity values on osdmap updates ceph: flush cap release queue when trimming session caps ceph: don't grabs open file reference for aborted request ceph: drop extra open file reference in ceph_atomic_open() ceph: preallocate buffer for readdir reply libceph: enable PRIMARY_AFFINITY feature bit libceph: redo ceph_calc_pg_primary() in terms of ceph_calc_pg_acting() libceph: add support for osd primary affinity libceph: add support for primary_temp mappings libceph: return primary from ceph_calc_pg_acting() libceph: switch ceph_calc_pg_acting() to new helpers libceph: introduce apply_temps() helper libceph: introduce pg_to_raw_osds() and raw_to_up_osds() helpers libceph: ceph_can_shift_osds(pool) and pool type defines libceph: ceph_osd_{exists,is_up,is_down}(osd) definitions libceph: enable OSDMAP_ENC feature bit libceph: primary_affinity decode bits libceph: primary_affinity infrastructure ...
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/rbd.c87
1 files changed, 59 insertions, 28 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 34898d53395b..4c95b503b09e 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1654,7 +1654,7 @@ static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
if (osd_req->r_result < 0)
obj_request->result = osd_req->r_result;
- BUG_ON(osd_req->r_num_ops > 2);
+ rbd_assert(osd_req->r_num_ops <= CEPH_OSD_MAX_OP);
/*
* We support a 64-bit length, but ultimately it has to be
@@ -1662,11 +1662,15 @@ static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
*/
obj_request->xferred = osd_req->r_reply_op_len[0];
rbd_assert(obj_request->xferred < (u64)UINT_MAX);
+
opcode = osd_req->r_ops[0].op;
switch (opcode) {
case CEPH_OSD_OP_READ:
rbd_osd_read_callback(obj_request);
break;
+ case CEPH_OSD_OP_SETALLOCHINT:
+ rbd_assert(osd_req->r_ops[1].op == CEPH_OSD_OP_WRITE);
+ /* fall through */
case CEPH_OSD_OP_WRITE:
rbd_osd_write_callback(obj_request);
break;
@@ -1715,9 +1719,16 @@ static void rbd_osd_req_format_write(struct rbd_obj_request *obj_request)
snapc, CEPH_NOSNAP, &mtime);
}
+/*
+ * Create an osd request. A read request has one osd op (read).
+ * A write request has either one (watch) or two (hint+write) osd ops.
+ * (All rbd data writes are prefixed with an allocation hint op, but
+ * technically osd watch is a write request, hence this distinction.)
+ */
static struct ceph_osd_request *rbd_osd_req_create(
struct rbd_device *rbd_dev,
bool write_request,
+ unsigned int num_ops,
struct rbd_obj_request *obj_request)
{
struct ceph_snap_context *snapc = NULL;
@@ -1733,10 +1744,13 @@ static struct ceph_osd_request *rbd_osd_req_create(
snapc = img_request->snapc;
}
- /* Allocate and initialize the request, for the single op */
+ rbd_assert(num_ops == 1 || (write_request && num_ops == 2));
+
+ /* Allocate and initialize the request, for the num_ops ops */
osdc = &rbd_dev->rbd_client->client->osdc;
- osd_req = ceph_osdc_alloc_request(osdc, snapc, 1, false, GFP_ATOMIC);
+ osd_req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false,
+ GFP_ATOMIC);
if (!osd_req)
return NULL; /* ENOMEM */
@@ -1756,8 +1770,8 @@ static struct ceph_osd_request *rbd_osd_req_create(
/*
* Create a copyup osd request based on the information in the
- * object request supplied. A copyup request has two osd ops,
- * a copyup method call, and a "normal" write request.
+ * object request supplied. A copyup request has three osd ops,
+ * a copyup method call, a hint op, and a write op.
*/
static struct ceph_osd_request *
rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
@@ -1773,12 +1787,12 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
rbd_assert(img_request);
rbd_assert(img_request_write_test(img_request));
- /* Allocate and initialize the request, for the two ops */
+ /* Allocate and initialize the request, for the three ops */
snapc = img_request->snapc;
rbd_dev = img_request->rbd_dev;
osdc = &rbd_dev->rbd_client->client->osdc;
- osd_req = ceph_osdc_alloc_request(osdc, snapc, 2, false, GFP_ATOMIC);
+ osd_req = ceph_osdc_alloc_request(osdc, snapc, 3, false, GFP_ATOMIC);
if (!osd_req)
return NULL; /* ENOMEM */
@@ -2178,6 +2192,7 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
const char *object_name;
u64 offset;
u64 length;
+ unsigned int which = 0;
object_name = rbd_segment_name(rbd_dev, img_offset);
if (!object_name)
@@ -2190,6 +2205,7 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
rbd_segment_name_free(object_name);
if (!obj_request)
goto out_unwind;
+
/*
* set obj_request->img_request before creating the
* osd_request so that it gets the right snapc
@@ -2207,7 +2223,7 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
clone_size,
GFP_ATOMIC);
if (!obj_request->bio_list)
- goto out_partial;
+ goto out_unwind;
} else {
unsigned int page_count;
@@ -2220,19 +2236,27 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
}
osd_req = rbd_osd_req_create(rbd_dev, write_request,
- obj_request);
+ (write_request ? 2 : 1),
+ obj_request);
if (!osd_req)
- goto out_partial;
+ goto out_unwind;
obj_request->osd_req = osd_req;
obj_request->callback = rbd_img_obj_callback;
- osd_req_op_extent_init(osd_req, 0, opcode, offset, length,
- 0, 0);
+ if (write_request) {
+ osd_req_op_alloc_hint_init(osd_req, which,
+ rbd_obj_bytes(&rbd_dev->header),
+ rbd_obj_bytes(&rbd_dev->header));
+ which++;
+ }
+
+ osd_req_op_extent_init(osd_req, which, opcode, offset, length,
+ 0, 0);
if (type == OBJ_REQUEST_BIO)
- osd_req_op_extent_osd_data_bio(osd_req, 0,
+ osd_req_op_extent_osd_data_bio(osd_req, which,
obj_request->bio_list, length);
else
- osd_req_op_extent_osd_data_pages(osd_req, 0,
+ osd_req_op_extent_osd_data_pages(osd_req, which,
obj_request->pages, length,
offset & ~PAGE_MASK, false, false);
@@ -2249,11 +2273,9 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
return 0;
-out_partial:
- rbd_obj_request_put(obj_request);
out_unwind:
for_each_obj_request_safe(img_request, obj_request, next_obj_request)
- rbd_obj_request_put(obj_request);
+ rbd_img_obj_request_del(img_request, obj_request);
return -ENOMEM;
}
@@ -2353,7 +2375,7 @@ rbd_img_obj_parent_read_full_callback(struct rbd_img_request *img_request)
/*
* The original osd request is of no use to use any more.
- * We need a new one that can hold the two ops in a copyup
+ * We need a new one that can hold the three ops in a copyup
* request. Allocate the new copyup osd request for the
* original request, and release the old one.
*/
@@ -2372,17 +2394,22 @@ rbd_img_obj_parent_read_full_callback(struct rbd_img_request *img_request)
osd_req_op_cls_request_data_pages(osd_req, 0, pages, parent_length, 0,
false, false);
- /* Then the original write request op */
+ /* Then the hint op */
+
+ osd_req_op_alloc_hint_init(osd_req, 1, rbd_obj_bytes(&rbd_dev->header),
+ rbd_obj_bytes(&rbd_dev->header));
+
+ /* And the original write request op */
offset = orig_request->offset;
length = orig_request->length;
- osd_req_op_extent_init(osd_req, 1, CEPH_OSD_OP_WRITE,
+ osd_req_op_extent_init(osd_req, 2, CEPH_OSD_OP_WRITE,
offset, length, 0, 0);
if (orig_request->type == OBJ_REQUEST_BIO)
- osd_req_op_extent_osd_data_bio(osd_req, 1,
+ osd_req_op_extent_osd_data_bio(osd_req, 2,
orig_request->bio_list, length);
else
- osd_req_op_extent_osd_data_pages(osd_req, 1,
+ osd_req_op_extent_osd_data_pages(osd_req, 2,
orig_request->pages, length,
offset & ~PAGE_MASK, false, false);
@@ -2603,8 +2630,8 @@ static int rbd_img_obj_exists_submit(struct rbd_obj_request *obj_request)
rbd_assert(obj_request->img_request);
rbd_dev = obj_request->img_request->rbd_dev;
- stat_request->osd_req = rbd_osd_req_create(rbd_dev, false,
- stat_request);
+ stat_request->osd_req = rbd_osd_req_create(rbd_dev, false, 1,
+ stat_request);
if (!stat_request->osd_req)
goto out;
stat_request->callback = rbd_img_obj_exists_callback;
@@ -2807,7 +2834,8 @@ static int rbd_obj_notify_ack_sync(struct rbd_device *rbd_dev, u64 notify_id)
return -ENOMEM;
ret = -ENOMEM;
- obj_request->osd_req = rbd_osd_req_create(rbd_dev, false, obj_request);
+ obj_request->osd_req = rbd_osd_req_create(rbd_dev, false, 1,
+ obj_request);
if (!obj_request->osd_req)
goto out;
@@ -2870,7 +2898,8 @@ static int __rbd_dev_header_watch_sync(struct rbd_device *rbd_dev, bool start)
if (!obj_request)
goto out_cancel;
- obj_request->osd_req = rbd_osd_req_create(rbd_dev, true, obj_request);
+ obj_request->osd_req = rbd_osd_req_create(rbd_dev, true, 1,
+ obj_request);
if (!obj_request->osd_req)
goto out_cancel;
@@ -2978,7 +3007,8 @@ static int rbd_obj_method_sync(struct rbd_device *rbd_dev,
obj_request->pages = pages;
obj_request->page_count = page_count;
- obj_request->osd_req = rbd_osd_req_create(rbd_dev, false, obj_request);
+ obj_request->osd_req = rbd_osd_req_create(rbd_dev, false, 1,
+ obj_request);
if (!obj_request->osd_req)
goto out;
@@ -3211,7 +3241,8 @@ static int rbd_obj_read_sync(struct rbd_device *rbd_dev,
obj_request->pages = pages;
obj_request->page_count = page_count;
- obj_request->osd_req = rbd_osd_req_create(rbd_dev, false, obj_request);
+ obj_request->osd_req = rbd_osd_req_create(rbd_dev, false, 1,
+ obj_request);
if (!obj_request->osd_req)
goto out;