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ceph: use new D_COMPLETE dentry flag

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We used to use a flag on the directory inode to track whether the dcache
contents for a directory were a complete cached copy.  Switch to a dentry
flag CEPH_D_COMPLETE that is safely updated by ->d_prune().

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil
2011-11-03 09:23:36 -07:00
parent b58dc4100b
commit c6ffe10015
5 changed files with 68 additions and 23 deletions
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8
fs/ceph/inode.c
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@@ -771,9 +771,9 @@ no_change:
ceph_snap(inode) == CEPH_NOSNAP &&
(le32_to_cpu(info->cap.caps) & CEPH_CAP_FILE_SHARED) &&
(issued & CEPH_CAP_FILE_EXCL) == 0 &&
(ci->i_ceph_flags & CEPH_I_COMPLETE) == 0) {
!ceph_dir_test_complete(inode)) {
dout(" marking %p complete (empty)\n", inode);
/* ci->i_ceph_flags |= CEPH_I_COMPLETE; */
ceph_dir_set_complete(inode);
ci->i_max_offset = 2;
}
@@ -856,7 +856,7 @@ static void ceph_set_dentry_offset(struct dentry *dn)
di = ceph_dentry(dn);
spin_lock(&inode->i_lock);
if ((ceph_inode(inode)->i_ceph_flags & CEPH_I_COMPLETE) == 0) {
if (!ceph_dir_test_complete(inode)) {
spin_unlock(&inode->i_lock);
return;
}
@@ -1056,7 +1056,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
* d_move() puts the renamed dentry at the end of
* d_subdirs. We need to assign it an appropriate
* directory offset so we can behave when holding
* I_COMPLETE.
* D_COMPLETE.
*/
ceph_set_dentry_offset(req->r_old_dentry);
dout("dn %p gets new offset %lld\n", req->r_old_dentry,