From b6b2829e8f555b3256a89f76a0c723ce7d86dfc3 Mon Sep 17 00:00:00 2001
From: yury <yury>
Date: Sun, 12 Oct 2008 09:28:00 +0000
Subject: [PATCH] - removed more dead code (dead for >2 years as it was only
needed when lmv used on server side) from lmv
---
lustre/lmv/lmv_obd.c | 206 +++++++++++++++++--------------------------
1 file changed, 80 insertions(+), 126 deletions(-)
diff --git a/lustre/lmv/lmv_obd.c b/lustre/lmv/lmv_obd.c
index 5417c672e6..bb1924554c 100644
--- a/lustre/lmv/lmv_obd.c
+++ b/lustre/lmv/lmv_obd.c
@@ -1899,35 +1899,25 @@ static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
repeat:
++loop;
LASSERT(loop <= 2);
- if (op_data->op_namelen != 0) {
- obj = lmv_object_find(obd, &op_data->op_fid2);
- if (obj) {
- sidx = raw_name2idx(obj->lo_hashtype,
- obj->lo_objcount,
- op_data->op_name,
- op_data->op_namelen);
- op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid;
- mds = obj->lo_stripes[sidx].ls_mds;
- lmv_object_put(obj);
- } else {
- rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds);
- if (rc)
- RETURN(rc);
- }
+ LASSERT(op_data->op_namelen != 0);
+
+ CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
+ PFID(&op_data->op_fid2), op_data->op_namelen,
+ op_data->op_name, PFID(&op_data->op_fid1));
- CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
- PFID(&op_data->op_fid2), op_data->op_namelen,
- op_data->op_name, PFID(&op_data->op_fid1));
+ obj = lmv_object_find(obd, &op_data->op_fid2);
+ if (obj) {
+ sidx = raw_name2idx(obj->lo_hashtype,
+ obj->lo_objcount,
+ op_data->op_name,
+ op_data->op_namelen);
+ op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid;
+ mds = obj->lo_stripes[sidx].ls_mds;
+ lmv_object_put(obj);
} else {
- rc = lmv_fld_lookup(lmv, &op_data->op_fid1, &mds);
+ rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds);
if (rc)
RETURN(rc);
-
- /*
- * Request from MDS to acquire i_links for inode by fid1.
- */
- CDEBUG(D_INODE, "Inc i_nlinks for "DFID"\n",
- PFID(&op_data->op_fid1));
}
CDEBUG(D_INODE, "Forward to mds #"LPU64" ("DFID")\n",
@@ -1938,14 +1928,12 @@ repeat:
op_data->op_cap = cfs_curproc_cap_pack();
tgt = lmv_get_target(lmv, mds);
- if (op_data->op_namelen) {
- /*
- * Cancel UPDATE lock on child (fid1).
- */
- op_data->op_flags |= MF_MDC_CANCEL_FID2;
- rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
- MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
- }
+ /*
+ * Cancel UPDATE lock on child (fid1).
+ */
+ op_data->op_flags |= MF_MDC_CANCEL_FID2;
+ rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
+ MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
if (rc == 0)
rc = md_link(tgt->ltd_exp, op_data, request);
if (rc == -ERESTART) {
@@ -1983,6 +1971,8 @@ static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
mdsno_t mds2;
ENTRY;
+ LASSERT(oldlen != 0);
+
CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n",
oldlen, old, PFID(&op_data->op_fid1),
newlen, new, PFID(&op_data->op_fid2));
@@ -1991,37 +1981,6 @@ static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
if (rc)
RETURN(rc);
- if (oldlen == 0) {
- /*
- * MDS with old dir entry is asking another MDS to create name
- * there.
- */
- CDEBUG(D_INODE,
- "Create %*s(%d/%d) in "DFID" pointing "
- "to "DFID"\n", newlen, new, oldlen, newlen,
- PFID(&op_data->op_fid2), PFID(&op_data->op_fid1));
-
- rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds1);
- if (rc)
- RETURN(rc);
-
- /*
- * Target directory can be split, sowe should forward request to
- * the right MDS.
- */
- obj = lmv_object_find(obd, &op_data->op_fid2);
- if (obj) {
- sidx = raw_name2idx(obj->lo_hashtype,
- obj->lo_objcount,
- (char *)new, newlen);
- op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid;
- CDEBUG(D_INODE, "Parent obj "DFID"\n",
- PFID(&op_data->op_fid2));
- lmv_object_put(obj);
- }
- goto request;
- }
-
repeat:
++loop;
LASSERT(loop <= 2);
@@ -2058,49 +2017,48 @@ repeat:
RETURN(rc);
}
-request:
op_data->op_fsuid = current->fsuid;
op_data->op_fsgid = current->fsgid;
op_data->op_cap = cfs_curproc_cap_pack();
src_tgt = lmv_get_target(lmv, mds1);
tgt_tgt = lmv_get_target(lmv, mds2);
- if (oldlen) {
- /*
- * LOOKUP lock on src child (fid3) should also be cancelled for
- * src_tgt in mdc_rename.
- */
- op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
- /*
- * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
- * own target.
- */
- rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
- LCK_EX, MDS_INODELOCK_UPDATE,
- MF_MDC_CANCEL_FID2);
+ /*
+ * LOOKUP lock on src child (fid3) should also be cancelled for
+ * src_tgt in mdc_rename.
+ */
+ op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
- /*
- * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt.
- */
- if (rc == 0) {
- rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
- LCK_EX, MDS_INODELOCK_LOOKUP,
- MF_MDC_CANCEL_FID4);
- }
+ /*
+ * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
+ * own target.
+ */
+ rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
+ LCK_EX, MDS_INODELOCK_UPDATE,
+ MF_MDC_CANCEL_FID2);
- /*
- * Cancel all the locks on tgt child (fid4).
- */
- if (rc == 0)
- rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
- LCK_EX, MDS_INODELOCK_FULL,
- MF_MDC_CANCEL_FID4);
+ /*
+ * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt.
+ */
+ if (rc == 0) {
+ rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
+ LCK_EX, MDS_INODELOCK_LOOKUP,
+ MF_MDC_CANCEL_FID4);
}
+ /*
+ * Cancel all the locks on tgt child (fid4).
+ */
+ if (rc == 0)
+ rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
+ LCK_EX, MDS_INODELOCK_FULL,
+ MF_MDC_CANCEL_FID4);
+
if (rc == 0)
rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen,
new, newlen, request);
+
if (rc == -ERESTART) {
LASSERT(*request != NULL);
DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
@@ -2412,6 +2370,7 @@ static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
struct lmv_tgt_desc *tgt = NULL;
struct lmv_object *obj;
int rc;
+ int sidx;
int loop = 0;
ENTRY;
@@ -2422,28 +2381,24 @@ static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
repeat:
++loop;
LASSERT(loop <= 2);
- if (op_data->op_namelen != 0) {
- int sidx;
+ LASSERT(op_data->op_namelen != 0);
- obj = lmv_object_find(obd, &op_data->op_fid1);
- if (obj) {
- sidx = raw_name2idx(obj->lo_hashtype,
- obj->lo_objcount,
- op_data->op_name,
- op_data->op_namelen);
- op_data->op_bias &= ~MDS_CHECK_SPLIT;
- op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
- tgt = lmv_get_target(lmv,
- obj->lo_stripes[sidx].ls_mds);
- lmv_object_put(obj);
- CDEBUG(D_INODE, "UNLINK '%*s' in "DFID" -> %u\n",
- op_data->op_namelen, op_data->op_name,
- PFID(&op_data->op_fid1), sidx);
- }
- } else {
- CDEBUG(D_INODE, "Drop i_nlink on "DFID"\n",
- PFID(&op_data->op_fid1));
+ obj = lmv_object_find(obd, &op_data->op_fid1);
+ if (obj) {
+ sidx = raw_name2idx(obj->lo_hashtype,
+ obj->lo_objcount,
+ op_data->op_name,
+ op_data->op_namelen);
+ op_data->op_bias &= ~MDS_CHECK_SPLIT;
+ op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
+ tgt = lmv_get_target(lmv,
+ obj->lo_stripes[sidx].ls_mds);
+ lmv_object_put(obj);
+ CDEBUG(D_INODE, "UNLINK '%*s' in "DFID" -> %u\n",
+ op_data->op_namelen, op_data->op_name,
+ PFID(&op_data->op_fid1), sidx);
}
+
if (tgt == NULL) {
tgt = lmv_find_target(lmv, &op_data->op_fid1);
if (IS_ERR(tgt))
@@ -2457,23 +2412,22 @@ repeat:
/*
* If child's fid is given, cancel unused locks for it if it is from
- * another export than parent.
+ * another export than parent.
+ *
+ * LOOKUP lock for child (fid3) should also be cancelled on parent
+ * tgt_tgt in mdc_unlink().
*/
- if (op_data->op_namelen) {
- /*
- * LOOKUP lock for child (fid3) should also be cancelled on
- * parent tgt_tgt in mdc_unlink().
- */
- op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
+ op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
+
+ /*
+ * Cancel FULL locks on child (fid3).
+ */
+ rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
+ MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
- /*
- * Cancel FULL locks on child (fid3).
- */
- rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
- MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
- }
if (rc == 0)
rc = md_unlink(tgt->ltd_exp, op_data, request);
+
if (rc == -ERESTART) {
LASSERT(*request != NULL);
DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
--
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