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ceph: avoid sending duplicated cap flush message

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make ceph_kick_flushing_caps() ignore inodes whose cap flushes
have already been re-sent by ceph_early_kick_flushing_caps()

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2016-07-05 16:45:21 +08:00 committed by Ilya Dryomov
parent 0e29438789
commit 13c2b57d81
2 changed files with 18 additions and 1 deletions
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18
fs/ceph/caps.c
View file

@ -2107,8 +2107,11 @@ void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc,
*/
if ((cap->issued & ci->i_flushing_caps) !=
ci->i_flushing_caps) {
ci->i_ceph_flags &= ~CEPH_I_KICK_FLUSH;
__kick_flushing_caps(mdsc, session, ci,
oldest_flush_tid);
} else {
ci->i_ceph_flags |= CEPH_I_KICK_FLUSH;
}
spin_unlock(&ci->i_ceph_lock);
@ -2119,6 +2122,7 @@ void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
struct ceph_mds_session *session)
{
struct ceph_inode_info *ci;
struct ceph_cap *cap;
u64 oldest_flush_tid;
dout("kick_flushing_caps mds%d\n", session->s_mds);
@ -2129,7 +2133,18 @@ void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc,
list_for_each_entry(ci, &session->s_cap_flushing, i_flushing_item) {
spin_lock(&ci->i_ceph_lock);
__kick_flushing_caps(mdsc, session, ci, oldest_flush_tid);
cap = ci->i_auth_cap;
if (!(cap && cap->session == session)) {
pr_err("%p auth cap %p not mds%d ???\n",
&ci->vfs_inode, cap, session->s_mds);
spin_unlock(&ci->i_ceph_lock);
continue;
}
if (ci->i_ceph_flags & CEPH_I_KICK_FLUSH) {
ci->i_ceph_flags &= ~CEPH_I_KICK_FLUSH;
__kick_flushing_caps(mdsc, session, ci,
oldest_flush_tid);
}
spin_unlock(&ci->i_ceph_lock);
}
}
@ -2154,6 +2169,7 @@ static void kick_flushing_inode_caps(struct ceph_mds_client *mdsc,
oldest_flush_tid = __get_oldest_flush_tid(mdsc);
spin_unlock(&mdsc->cap_dirty_lock);
ci->i_ceph_flags &= ~CEPH_I_KICK_FLUSH;
__kick_flushing_caps(mdsc, session, ci, oldest_flush_tid);
spin_unlock(&ci->i_ceph_lock);
} else {

1
fs/ceph/super.h
View file

@ -468,6 +468,7 @@ static inline struct inode *ceph_find_inode(struct super_block *sb,
#define CEPH_I_POOL_WR (1 << 6) /* can write to pool */
#define CEPH_I_SEC_INITED (1 << 7) /* security initialized */
#define CEPH_I_CAP_DROPPED (1 << 8) /* caps were forcibly dropped */
#define CEPH_I_KICK_FLUSH (1 << 9) /* kick flushing caps */
static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci,
long long release_count,