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authorRavishankar N <ravishankar@redhat.com>2015-04-15 22:53:21 +0530
committerKrishnan Parthasarathi <kparthas@redhat.com>2015-04-27 22:40:31 -0700
commitd4889b2cfd29e6ecc911d2b29d1f85d516a66eaf (patch)
treea702c6323d43561d79d2236b8cb7087e5207b2b7 /libglusterfs
parent70a729e9751e45e266f7462443dcf2b6be3cecbe (diff)
arbiter: load arbiter xlator on every 3rd brick of a replica 3 AFR subvol
Logic for adding the 'glusterd_brickinfo->group' member and using it to find the brick positon has been taken from http://review.gluster.org/#/c/9919. Thanks to Jeff Darcy for that. This patch is a part of the arbiter logic implementation for 3 way AFR details of which can be found at http://review.gluster.org/#/c/9656/ Change-Id: Idbfe4f29ee8e098e0102def8f38b32314316b188 BUG: 1199985 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/10257 Tested-by: NetBSD Build System Reviewed-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Tested-by: Krishnan Parthasarathi <kparthas@redhat.com>
Diffstat (limited to 'libglusterfs')
-rw-r--r--libglusterfs/src/list.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/libglusterfs/src/list.h b/libglusterfs/src/list.h
index a860275a91e..875594136a2 100644
--- a/libglusterfs/src/list.h
+++ b/libglusterfs/src/list.h
@@ -256,4 +256,18 @@ static inline void list_replace_init(struct list_head *old,
&pos->member != (head); \
pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+/*
+ * This list implementation has some advantages, but one disadvantage: you
+ * can't use NULL to check whether you're at the head or tail. Thus, the
+ * address of the head has to be an argument for these macros.
+ */
+
+#define list_next(ptr, head, type, member) \
+ (((ptr)->member.next == head) ? NULL \
+ : list_entry((ptr)->member.next, type, member))
+
+#define list_prev(ptr, head, type, member) \
+ (((ptr)->member.prev == head) ? NULL \
+ : list_entry((ptr)->member.prev, type, member))
+
#endif /* _LLIST_H */