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ceph: clear parent D_COMPLETE flag when on dentry prune

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When the VFS prunes a dentry from the cache, clear the D_COMPLETE flag
on the parent dentry.  Do this for the live and snapshotted namespaces. Do
not bother for the .snap dir contents, since we do not cache that.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil
2011-03-15 15:53:40 -07:00
parent 3f8ddb032a
commit b58dc4100b
2 changed files with 41 additions and 0 deletions
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13
fs/ceph/super.h
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@@ -203,6 +203,7 @@ struct ceph_inode_xattr {
* Ceph dentry state
*/
struct ceph_dentry_info {
unsigned long flags;
struct ceph_mds_session *lease_session;
u32 lease_gen, lease_shared_gen;
u32 lease_seq;
@@ -213,6 +214,18 @@ struct ceph_dentry_info {
u64 offset;
};
/*
* dentry flags
*
* The locking for D_COMPLETE is a bit odd:
* - we can clear it at almost any time (see ceph_d_prune)
* - it is only meaningful if:
* - we hold dir inode i_lock
* - we hold dir FILE_SHARED caps
* - the dentry D_COMPLETE is set
*/
#define CEPH_D_COMPLETE 1 /* if set, d_u.d_subdirs is complete directory */
struct ceph_inode_xattrs_info {
/*
* (still encoded) xattr blob. we avoid the overhead of parsing