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| author | Sunil Mushran <sunil.mushran@oracle.com> | 2010-10-09 21:24:46 +0400 |
|---|---|---|
| committer | Sunil Mushran <sunil.mushran@oracle.com> | 2010-10-09 21:24:46 +0400 |
| commit | 98f486f23bc5b6a6fa90e1a0707b7e9fe0e7f3e4 (patch) | |
| tree | 3998ce4a9c8871299934f7b1b305867ea9d4ac40 /fs/ocfs2/ocfs2.h | |
| parent | 54b5187b5a1ad6573ade8b18e065dda92501fc52 (diff) | |
| download | linux-98f486f23bc5b6a6fa90e1a0707b7e9fe0e7f3e4.tar.xz | |
ocfs2: Add an incompat feature flag OCFS2_FEATURE_INCOMPAT_CLUSTERINFO
OCFS2_FEATURE_INCOMPAT_CLUSTERINFO allows us to use sb->s_cluster_info for
both userspace and o2cb cluster stacks. It also allows us to extend cluster
info to include stack flags.
This patch also adds stackflags to sb->s_clusterinfo. It also introduces a
clusterinfo flag OCFS2_CLUSTER_O2CB_GLOBAL_HEARTBEAT to denote the enabled
global heartbeat mode.
This incompat flag can be set/cleared using tunefs.ocfs2 --fs-features. The
clusterinfo flag is set/cleared using tunefs.ocfs2 --update-cluster-stack.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Diffstat (limited to 'fs/ocfs2/ocfs2.h')
| -rw-r--r-- | fs/ocfs2/ocfs2.h | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index c67003b6b5a2..d5496a792bdb 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -368,6 +368,8 @@ struct ocfs2_super struct ocfs2_alloc_stats alloc_stats; char dev_str[20]; /* "major,minor" of the device */ + u8 osb_stackflags; + char osb_cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; struct ocfs2_cluster_connection *cconn; struct ocfs2_lock_res osb_super_lockres; @@ -601,10 +603,35 @@ static inline int ocfs2_is_soft_readonly(struct ocfs2_super *osb) return ret; } -static inline int ocfs2_userspace_stack(struct ocfs2_super *osb) +static inline int ocfs2_clusterinfo_valid(struct ocfs2_super *osb) { return (osb->s_feature_incompat & - OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK); + (OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK | + OCFS2_FEATURE_INCOMPAT_CLUSTERINFO)); +} + +static inline int ocfs2_userspace_stack(struct ocfs2_super *osb) +{ + if (ocfs2_clusterinfo_valid(osb) && + memcmp(osb->osb_cluster_stack, OCFS2_CLASSIC_CLUSTER_STACK, + OCFS2_STACK_LABEL_LEN)) + return 1; + return 0; +} + +static inline int ocfs2_o2cb_stack(struct ocfs2_super *osb) +{ + if (ocfs2_clusterinfo_valid(osb) && + !memcmp(osb->osb_cluster_stack, OCFS2_CLASSIC_CLUSTER_STACK, + OCFS2_STACK_LABEL_LEN)) + return 1; + return 0; +} + +static inline int ocfs2_cluster_o2cb_global_heartbeat(struct ocfs2_super *osb) +{ + return ocfs2_o2cb_stack(osb) && + (osb->osb_stackflags & OCFS2_CLUSTER_O2CB_GLOBAL_HEARTBEAT); } static inline int ocfs2_mount_local(struct ocfs2_super *osb) |