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| author | NeilBrown <neilb@suse.com> | 2018-04-12 07:54:48 +1000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-23 15:07:41 +0200 |
| commit | 4206c444e4a89dae9f67f08d9c29d58c37c960cd (patch) | |
| tree | 7fe516c0cc1d742f3e474562d9afab4fec201211 /drivers/staging/lustre/lustre/include/obd.h | |
| parent | 055ed193b190edac539f37a66699b02eae3a19a9 (diff) | |
| download | op-kernel-dev-4206c444e4a89dae9f67f08d9c29d58c37c960cd.zip op-kernel-dev-4206c444e4a89dae9f67f08d9c29d58c37c960cd.tar.gz | |
staging: lustre: convert obd uuid hash to rhashtable
The rhashtable data type is a perfect fit for the
export uuid hash table, so use that instead of
cfs_hash (which will eventually be removed).
As rhashtable supports lookups and insertions in atomic
context, there is no need to drop a spinlock while
inserting a new entry, which simplifies code quite a bit.
As there are no simple lookups on this hash table (only
insertions which might fail and take a spinlock), there is
no need to use rcu to free the exports.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre/lustre/include/obd.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/include/obd.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h index 7e1de03..0d0420e 100644 --- a/drivers/staging/lustre/lustre/include/obd.h +++ b/drivers/staging/lustre/lustre/include/obd.h @@ -558,7 +558,7 @@ struct obd_device { */ unsigned long obd_recovery_expired:1; /* uuid-export hash body */ - struct cfs_hash *obd_uuid_hash; + struct rhashtable obd_uuid_hash; wait_queue_head_t obd_refcount_waitq; struct list_head obd_exports; struct list_head obd_unlinked_exports; @@ -622,6 +622,9 @@ struct obd_device { struct completion obd_kobj_unregister; }; +int obd_uuid_add(struct obd_device *obd, struct obd_export *export); +void obd_uuid_del(struct obd_device *obd, struct obd_export *export); + /* get/set_info keys */ #define KEY_ASYNC "async" #define KEY_CHANGELOG_CLEAR "changelog_clear" |
