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ceph: drop unconnected inodes

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Positve dentry and corresponding inode are always accompanied in MDS reply.
So no need to keep inode in the cache after dropping all its aliases.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>
This commit is contained in:
Yan, Zheng 2013-09-20 19:55:31 +08:00 committed by Sage Weil
parent 56f91aad69
commit 9f12bd119e
3 changed files with 12 additions and 0 deletions
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10
fs/ceph/inode.c
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@ -436,6 +436,16 @@ void ceph_destroy_inode(struct inode *inode)
call_rcu(&inode->i_rcu, ceph_i_callback);
}
int ceph_drop_inode(struct inode *inode)
{
/*
* Positve dentry and corresponding inode are always accompanied
* in MDS reply. So no need to keep inode in the cache after
* dropping all its aliases.
*/
return 1;
}
/*
* Helpers to fill in size, ctime, mtime, and atime. We have to be
* careful because either the client or MDS may have more up to date

1
fs/ceph/super.c
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@ -686,6 +686,7 @@ static const struct super_operations ceph_super_ops = {
.alloc_inode = ceph_alloc_inode,
.destroy_inode = ceph_destroy_inode,
.write_inode = ceph_write_inode,
.drop_inode = ceph_drop_inode,
.sync_fs = ceph_sync_fs,
.put_super = ceph_put_super,
.show_options = ceph_show_options,

1
fs/ceph/super.h
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@ -691,6 +691,7 @@ extern const struct inode_operations ceph_file_iops;
extern struct inode *ceph_alloc_inode(struct super_block *sb);
extern void ceph_destroy_inode(struct inode *inode);
extern int ceph_drop_inode(struct inode *inode);
extern struct inode *ceph_get_inode(struct super_block *sb,
struct ceph_vino vino);