static int llog_changelog_cancel_cb(struct llog_handle *llh,
struct llog_rec_hdr *hdr, void *data)
{
struct llog_changelog_rec *rec = (struct llog_changelog_rec *)hdr;
struct llog_cookie cookie;
long long endrec = *(long long *)data;
int rc, err;
struct obd_device *obd;
void *trans_h;
struct inode *inode;
ENTRY;
/* This is always a (sub)log, not the catalog */
LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
if (rec->cr.cr_index > endrec)
/* records are in order, so we're done */
RETURN(LLOG_PROC_BREAK);
cookie.lgc_lgl = llh->lgh_id;
cookie.lgc_index = hdr->lrh_index;
obd = llh->lgh_ctxt->loc_exp->exp_obd;
inode = llh->lgh_file->f_dentry->d_inode;
/* XXX This is a workaround for the deadlock of changelog adding vs.
* changelog cancelling. Changelog adding always start transaction
* before acquiring the catlog lock (lgh_lock), whereas, changelog
* cancelling do start transaction after holding catlog lock.
*
* We start the transaction earlier here to keep the locking ordering:
* 'start transaction -> catlog lock'. LU-81. */
trans_h = fsfilt_start_log(obd, inode, FSFILT_OP_CANCEL_UNLINK,
NULL, 1);
if (IS_ERR(trans_h)) {
CERROR("fsfilt_start_log failed: %ld\n", PTR_ERR(trans_h));
RETURN(PTR_ERR(trans_h));
}
/* cancel them one at a time. I suppose we could store up the cookies
and cancel them all at once; probably more efficient, but this is
done as a user call, so who cares... */
rc = llog_cat_cancel_records(llh->u.phd.phd_cat_handle, 1, &cookie);
err = fsfilt_commit(obd, inode, trans_h, 0);
if (err) {
CERROR("fsfilt_commit failed: %d\n", err);
rc = (rc >= 0) ? err : rc;
}
RETURN(rc < 0 ? rc : 0);
}
static int llog_lvfs_destroy(struct llog_handle *handle)
{
struct dentry *fdentry;
struct obdo *oa;
struct obd_device *obd = handle->lgh_ctxt->loc_exp->exp_obd;
char *dir;
void *th;
struct inode *inode;
int rc, rc1;
ENTRY;
dir = MOUNT_CONFIGS_DIR;
fdentry = handle->lgh_file->f_dentry;
inode = fdentry->d_parent->d_inode;
if (strcmp(fdentry->d_parent->d_name.name, dir) == 0) {
struct lvfs_run_ctxt saved;
struct vfsmount *mnt = mntget(handle->lgh_file->f_vfsmnt);
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
dget(fdentry);
rc = llog_lvfs_close(handle);
if (rc == 0) {
LOCK_INODE_MUTEX_PARENT(inode);
rc = ll_vfs_unlink(inode, fdentry, mnt);
UNLOCK_INODE_MUTEX(inode);
}
mntput(mnt);
dput(fdentry);
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
RETURN(rc);
}
OBDO_ALLOC(oa);
if (oa == NULL)
RETURN(-ENOMEM);
oa->o_id = handle->lgh_id.lgl_oid;
oa->o_seq = handle->lgh_id.lgl_oseq;
oa->o_generation = handle->lgh_id.lgl_ogen;
#undef o_generation
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLGENER;
rc = llog_lvfs_close(handle);
if (rc)
GOTO(out, rc);
th = fsfilt_start_log(obd, inode, FSFILT_OP_UNLINK, NULL, 1);
if (IS_ERR(th)) {
CERROR("fsfilt_start failed: %ld\n", PTR_ERR(th));
GOTO(out, rc = PTR_ERR(th));
}
rc = obd_destroy(handle->lgh_ctxt->loc_exp, oa, NULL, NULL, NULL, NULL);
rc1 = fsfilt_commit(obd, inode, th, 0);
if (rc == 0 && rc1 != 0)
rc = rc1;
out:
OBDO_FREE(oa);
RETURN(rc);
}
int llog_origin_handle_cancel(struct ptlrpc_request *req)
{
struct obd_device *obd = req->rq_export->exp_obd;
int num_cookies, rc = 0, err, i, failed = 0;
struct obd_device *disk_obd;
struct llog_cookie *logcookies;
struct llog_ctxt *ctxt = NULL;
struct lvfs_run_ctxt saved;
struct llog_handle *cathandle;
struct inode *inode;
void *handle;
ENTRY;
logcookies = req_capsule_client_get(&req->rq_pill, &RMF_LOGCOOKIES);
num_cookies = req_capsule_get_size(&req->rq_pill, &RMF_LOGCOOKIES,
RCL_CLIENT) / sizeof(*logcookies);
if (logcookies == NULL || num_cookies == 0) {
DEBUG_REQ(D_HA, req, "No llog cookies sent");
RETURN(-EFAULT);
}
ctxt = llog_get_context(obd, logcookies->lgc_subsys);
if (ctxt == NULL)
RETURN(-ENODEV);
disk_obd = ctxt->loc_exp->exp_obd;
push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
for (i = 0; i < num_cookies; i++, logcookies++) {
cathandle = ctxt->loc_handle;
LASSERT(cathandle != NULL);
inode = cathandle->lgh_file->f_dentry->d_inode;
handle = fsfilt_start_log(disk_obd, inode,
FSFILT_OP_CANCEL_UNLINK, NULL, 1);
if (IS_ERR(handle)) {
CERROR("fsfilt_start_log() failed: %ld\n",
PTR_ERR(handle));
GOTO(pop_ctxt, rc = PTR_ERR(handle));
}
rc = llog_cat_cancel_records(cathandle, 1, logcookies);
/*
* Do not raise -ENOENT errors for resent rpcs. This rec already
* might be killed.
*/
if (rc == -ENOENT &&
(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT)) {
/*
* Do not change this message, reply-single.sh test_59b
* expects to find this in log.
*/
CDEBUG(D_RPCTRACE, "RESENT cancel req %p - ignored\n",
req);
rc = 0;
} else if (rc == 0) {
CDEBUG(D_RPCTRACE, "Canceled %d llog-records\n",
num_cookies);
}
err = fsfilt_commit(disk_obd, inode, handle, 0);
if (err) {
CERROR("Error committing transaction: %d\n", err);
if (!rc)
rc = err;
failed++;
GOTO(pop_ctxt, rc);
} else if (rc)
failed++;
}
GOTO(pop_ctxt, rc);
pop_ctxt:
pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
if (rc)
CERROR("Cancel %d of %d llog-records failed: %d\n",
failed, num_cookies, rc);
llog_ctxt_put(ctxt);
return rc;
}
static int llog_lvfs_destroy(const struct lu_env *env,
struct llog_handle *handle)
{
struct dentry *fdentry;
struct obdo *oa;
struct obd_device *obd = handle->lgh_ctxt->loc_exp->exp_obd;
char *dir;
void *th;
struct inode *inode;
int rc, rc1;
dir = MOUNT_CONFIGS_DIR;
LASSERT(handle->lgh_file);
fdentry = handle->lgh_file->f_dentry;
inode = fdentry->d_parent->d_inode;
if (strcmp(fdentry->d_parent->d_name.name, dir) == 0) {
struct lvfs_run_ctxt saved;
struct vfsmount *mnt = mntget(handle->lgh_file->f_vfsmnt);
push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
dget(fdentry);
rc = llog_lvfs_close(env, handle);
if (rc == 0) {
mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
rc = ll_vfs_unlink(inode, fdentry, mnt);
mutex_unlock(&inode->i_mutex);
}
mntput(mnt);
dput(fdentry);
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
return rc;
}
OBDO_ALLOC(oa);
if (oa == NULL)
return -ENOMEM;
oa->o_oi = handle->lgh_id.lgl_oi;
oa->o_generation = handle->lgh_id.lgl_ogen;
#undef o_generation
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLGENER;
rc = llog_lvfs_close(env, handle);
if (rc)
GOTO(out, rc);
th = fsfilt_start_log(obd, inode, FSFILT_OP_UNLINK, NULL, 1);
if (IS_ERR(th)) {
CERROR("fsfilt_start failed: %ld\n", PTR_ERR(th));
GOTO(out, rc = PTR_ERR(th));
}
rc = obd_destroy(NULL, handle->lgh_ctxt->loc_exp, oa,
NULL, NULL, NULL, NULL);
rc1 = fsfilt_commit(obd, inode, th, 0);
if (rc == 0 && rc1 != 0)
rc = rc1;
out:
OBDO_FREE(oa);
return rc;
}
