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authorYan, Zheng <zyan@redhat.com>2015-06-10 12:26:13 +0300
committerIlya Dryomov <idryomov@gmail.com>2015-06-25 11:49:31 +0300
commitf66fd9f0952187d274c13c136b74548f792c1925 (patch)
treec021f04f69b116f2673fdfb2354a99871f8f03a4 /fs/ceph/super.h
parente548e9b93d3e565e42b938a99804114565be1f81 (diff)
downloadlinux-f66fd9f0952187d274c13c136b74548f792c1925.tar.xz
ceph: pre-allocate data structure that tracks caps flushing
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs/ceph/super.h')
-rw-r--r--fs/ceph/super.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index e7f13f742357..4415e977d72b 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -309,6 +309,7 @@ struct ceph_inode_info {
/* we need to track cap writeback on a per-cap-bit basis, to allow
* overlapping, pipelined cap flushes to the mds. we can probably
* reduce the tid to 8 bits if we're concerned about inode size. */
+ struct ceph_cap_flush *i_prealloc_cap_flush;
struct rb_root i_cap_flush_tree;
wait_queue_head_t i_cap_wq; /* threads waiting on a capability */
unsigned long i_hold_caps_min; /* jiffies */
@@ -578,7 +579,10 @@ static inline int __ceph_caps_dirty(struct ceph_inode_info *ci)
{
return ci->i_dirty_caps | ci->i_flushing_caps;
}
-extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask);
+extern struct ceph_cap_flush *ceph_alloc_cap_flush(void);
+extern void ceph_free_cap_flush(struct ceph_cap_flush *cf);
+extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask,
+ struct ceph_cap_flush **pcf);
extern int __ceph_caps_revoking_other(struct ceph_inode_info *ci,
struct ceph_cap *ocap, int mask);