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| author | Ilya Dryomov <idryomov@gmail.com> | 2020-05-29 20:51:23 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2020-06-01 23:32:35 +0200 |
| commit | dc1dad8e1a612650b1e786e992cb0c6e101e226a (patch) | |
| tree | 41f1f59f540cdbd6abebf99ab7146129d3c098a3 /drivers/block/rbd.c | |
| parent | d3798acc094c8ff2406e9acc7a9b2c09da994616 (diff) | |
rbd: compression_hint option
Allow hinting to bluestore if the data should/should not be compressed.
The default is to not hint (compression_hint=none).
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Diffstat (limited to 'drivers/block/rbd.c')
| -rw-r--r-- | drivers/block/rbd.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 97e102ea03e0..7420648a1de6 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -836,6 +836,7 @@ enum { Opt_lock_timeout, /* int args above */ Opt_pool_ns, + Opt_compression_hint, /* string args above */ Opt_read_only, Opt_read_write, @@ -844,8 +845,23 @@ enum { Opt_notrim, }; +enum { + Opt_compression_hint_none, + Opt_compression_hint_compressible, + Opt_compression_hint_incompressible, +}; + +static const struct constant_table rbd_param_compression_hint[] = { + {"none", Opt_compression_hint_none}, + {"compressible", Opt_compression_hint_compressible}, + {"incompressible", Opt_compression_hint_incompressible}, + {} +}; + static const struct fs_parameter_spec rbd_parameters[] = { fsparam_u32 ("alloc_size", Opt_alloc_size), + fsparam_enum ("compression_hint", Opt_compression_hint, + rbd_param_compression_hint), fsparam_flag ("exclusive", Opt_exclusive), fsparam_flag ("lock_on_read", Opt_lock_on_read), fsparam_u32 ("lock_timeout", Opt_lock_timeout), @@ -867,6 +883,8 @@ struct rbd_options { bool lock_on_read; bool exclusive; bool trim; + + u32 alloc_hint_flags; /* CEPH_OSD_OP_ALLOC_HINT_FLAG_* */ }; #define RBD_QUEUE_DEPTH_DEFAULT BLKDEV_MAX_RQ @@ -2254,7 +2272,7 @@ static void __rbd_osd_setup_write_ops(struct ceph_osd_request *osd_req, osd_req_op_alloc_hint_init(osd_req, which++, rbd_dev->layout.object_size, rbd_dev->layout.object_size, - 0); + rbd_dev->opts->alloc_hint_flags); } if (rbd_obj_is_entire(obj_req)) @@ -6332,6 +6350,29 @@ static int rbd_parse_param(struct fs_parameter *param, pctx->spec->pool_ns = param->string; param->string = NULL; break; + case Opt_compression_hint: + switch (result.uint_32) { + case Opt_compression_hint_none: + opt->alloc_hint_flags &= + ~(CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE | + CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE); + break; + case Opt_compression_hint_compressible: + opt->alloc_hint_flags |= + CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE; + opt->alloc_hint_flags &= + ~CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE; + break; + case Opt_compression_hint_incompressible: + opt->alloc_hint_flags |= + CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE; + opt->alloc_hint_flags &= + ~CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE; + break; + default: + BUG(); + } + break; case Opt_read_only: opt->read_only = true; break; |