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libceph: rados pool namespace support

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Add pool namesapce pointer to struct ceph_file_layout and struct
ceph_object_locator. Pool namespace is used by when mapping object
to PG, it's also used when composing OSD request.

The namespace pointer in struct ceph_file_layout is RCU protected.
So libceph can read namespace without taking lock.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
[idryomov@gmail.com: ceph_oloc_destroy(), misc minor changes]
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng
2016-02-14 11:24:31 +08:00
committed by Ilya Dryomov
parent 51e9273796
commit 30c156d995
7 changed files with 91 additions and 19 deletions
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10
include/linux/ceph/osdmap.h
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@@ -63,11 +63,13 @@ static inline bool ceph_can_shift_osds(struct ceph_pg_pool_info *pool)
struct ceph_object_locator {
s64 pool;
struct ceph_string *pool_ns;
};
static inline void ceph_oloc_init(struct ceph_object_locator *oloc)
{
oloc->pool = -1;
oloc->pool_ns = NULL;
}
static inline bool ceph_oloc_empty(const struct ceph_object_locator *oloc)
@@ -75,11 +77,9 @@ static inline bool ceph_oloc_empty(const struct ceph_object_locator *oloc)
return oloc->pool == -1;
}
static inline void ceph_oloc_copy(struct ceph_object_locator *dest,
const struct ceph_object_locator *src)
{
dest->pool = src->pool;
}
void ceph_oloc_copy(struct ceph_object_locator *dest,
const struct ceph_object_locator *src);
void ceph_oloc_destroy(struct ceph_object_locator *oloc);
/*
* Maximum supported by kernel client object name length