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rbd: update feature bits

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There is a new rbd feature bit defined for "fancy striping." Add
it to the ones defined in the kernel client.

Change RBD_FEATURES_ALL so it represents the set of all feature
bits (rather than just the ones we support).  Define a new symbol
RBD_FEATURES_SUPPORTED to indicate the supported ones.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
This commit is contained in:
Alex Elder 2013-04-11 09:29:48 -05:00 committed by Sage Weil
parent 04017e29bb
commit 5cbf6f12c4
1 changed files with 6 additions and 3 deletions
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9
drivers/block/rbd.c
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@ -73,11 +73,14 @@
/* Feature bits */
#define RBD_FEATURE_LAYERING 1
#define RBD_FEATURE_LAYERING (1<<0)
#define RBD_FEATURE_STRIPINGV2 (1<<1)
#define RBD_FEATURES_ALL \
(RBD_FEATURE_LAYERING | RBD_FEATURE_STRIPINGV2)
/* Features supported by this (client software) implementation. */
#define RBD_FEATURES_ALL (0)
#define RBD_FEATURES_SUPPORTED (0)
/*
* An RBD device name will be "rbd#", where the "rbd" comes from
@ -2843,7 +2846,7 @@ static int _rbd_dev_v2_snap_features(struct rbd_device *rbd_dev, u64 snap_id,
return ret;
incompat = le64_to_cpu(features_buf.incompat);
if (incompat & ~RBD_FEATURES_ALL)
if (incompat & ~RBD_FEATURES_SUPPORTED)
return -ENXIO;
*snap_features = le64_to_cpu(features_buf.features);