ceph: set dn offset when spliced
We want to assign an offset when the dentry goes from null to linked, which
is always done by splice_dentry(). Notably, we should NOT assign an
offset when a dentry is first created and is still null.
BUG if we try to splice a non-null dentry (we shouldn't).
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 0b0a39d..d3bb813 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -128,7 +128,8 @@
dentry = list_entry(p, struct dentry, d_u.d_child);
di = ceph_dentry(dentry);
while (1) {
- dout(" p %p/%p d_subdirs %p/%p\n", p->prev, p->next,
+ dout(" p %p/%p %s d_subdirs %p/%p\n", p->prev, p->next,
+ d_unhashed(dentry) ? "!hashed" : "hashed",
parent->d_subdirs.prev, parent->d_subdirs.next);
if (p == &parent->d_subdirs) {
fi->at_end = 1;
@@ -571,7 +572,6 @@
!is_root_ceph_dentry(dir, dentry) &&
(ci->i_ceph_flags & CEPH_I_COMPLETE) &&
(__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) {
- di->offset = ci->i_max_offset++;
spin_unlock(&dir->i_lock);
dout(" dir %p complete, -ENOENT\n", dir);
d_add(dentry, NULL);
@@ -984,8 +984,9 @@
{
struct inode *dir = dentry->d_parent->d_inode;
- dout("d_revalidate %p '%.*s' inode %p\n", dentry,
- dentry->d_name.len, dentry->d_name.name, dentry->d_inode);
+ dout("d_revalidate %p '%.*s' inode %p offset %lld\n", dentry,
+ dentry->d_name.len, dentry->d_name.name, dentry->d_inode,
+ ceph_dentry(dentry)->offset);
/* always trust cached snapped dentries, snapdir dentry */
if (ceph_snap(dir) != CEPH_NOSNAP) {
@@ -1177,8 +1178,8 @@
struct ceph_dentry_info *di = ceph_dentry(dn);
struct ceph_mds_client *mdsc;
- dout("dentry_lru_touch %p %p '%.*s'\n", di, dn,
- dn->d_name.len, dn->d_name.name);
+ dout("dentry_lru_touch %p %p '%.*s' (offset %lld)\n", di, dn,
+ dn->d_name.len, dn->d_name.name, di->offset);
if (di) {
mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_lru_lock);