mount/fuse: perform lookup() on inodes linked through readdirplus

Some xlators still require lookup() fop to be sent for proper working.
This patch remembers inodes which have been linked through readdiprlus
and makes the resolver send lookups on them.

Also, introduce and use context count for inode table.

Change-Id: Ibe8a04a659539d90dfc794521b51bf2bda017a0b
BUG: 979910
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/5267
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-on: http://review.gluster.org/5806

2 files changed, 12 insertions, 11 deletions

diff --git a/libglusterfs/src/inode.c b/libglusterfs/src/inode.c
index 6f1c8ec3f25..1cc59666adb 100644
--- a/libglusterfs/src/inode.c
+++ b/libglusterfs/src/inode.c
@@ -310,7 +310,7 @@ __inode_destroy (inode_t *inode)
                 goto noctx;
         }
 
-        for (index = 0; index < inode->table->xl->graph->xl_count; index++) {
+        for (index = 0; index < inode->table->ctxcount; index++) {
                 if (inode->_ctx[index].xl_key) {
                         xl = (xlator_t *)(long)inode->_ctx[index].xl_key;
                         old_THIS = THIS;
@@ -528,8 +528,7 @@ __inode_create (inode_table_t *table)
         INIT_LIST_HEAD (&newi->hash);
         INIT_LIST_HEAD (&newi->dentry_list);
 
-        newi->_ctx = GF_CALLOC (1, (sizeof (struct _inode_ctx) *
-                                    table->xl->graph->xl_count),
+        newi->_ctx = GF_CALLOC (1, (sizeof (struct _inode_ctx) * table->ctxcount),
                                 gf_common_mt_inode_ctx);
 
         if (newi->_ctx == NULL) {
@@ -1316,6 +1315,7 @@ inode_table_new (size_t lru_limit, xlator_t *xl)
                 return NULL;
 
         new->xl = xl;
+        new->ctxcount = xl->graph->xl_count + 1;
 
         new->lru_limit = lru_limit;
 
@@ -1466,7 +1466,7 @@ __inode_ctx_set2 (inode_t *inode, xlator_t *xlator, uint64_t *value1_p,
         if (!inode || !xlator)
                 return -1;
 
-        for (index = 0; index < xlator->graph->xl_count; index++) {
+        for (index = 0; index < inode->table->ctxcount; index++) {
                 if (!inode->_ctx[index].xl_key) {
                         if (set_idx == -1)
                                 set_idx = index;
@@ -1523,12 +1523,12 @@ __inode_ctx_get2 (inode_t *inode, xlator_t *xlator, uint64_t *value1,
         if (!inode || !xlator)
                 return -1;
 
-        for (index = 0; index < xlator->graph->xl_count; index++) {
+        for (index = 0; index < inode->table->ctxcount; index++) {
                 if (inode->_ctx[index].xl_key == xlator)
                         break;
         }
 
-        if (index == xlator->graph->xl_count) {
+        if (index == inode->table->ctxcount) {
                 ret = -1;
                 goto out;
         }
@@ -1575,12 +1575,12 @@ inode_ctx_del2 (inode_t *inode, xlator_t *xlator, uint64_t *value1,
 
         LOCK (&inode->lock);
         {
-                for (index = 0; index < xlator->graph->xl_count; index++) {
+                for (index = 0; index < inode->table->ctxcount; index++) {
                         if (inode->_ctx[index].xl_key == xlator)
                                 break;
                 }
 
-                if (index == xlator->graph->xl_count) {
+                if (index == inode->table->ctxcount) {
                         ret = -1;
                         goto unlock;
                 }
@@ -1628,14 +1628,14 @@ inode_dump (inode_t *inode, char *prefix)
                 gf_proc_dump_write("ref", "%u", inode->ref);
                 gf_proc_dump_write("ia_type", "%d", inode->ia_type);
                 if (inode->_ctx) {
-                        inode_ctx = GF_CALLOC (inode->table->xl->graph->xl_count,
+                        inode_ctx = GF_CALLOC (inode->table->ctxcount,
                                                sizeof (*inode_ctx),
                                                gf_common_mt_inode_ctx);
                         if (inode_ctx == NULL) {
                                 goto unlock;
                         }
 
-                        for (i = 0; i < inode->table->xl->graph->xl_count; i++) {
+                        for (i = 0; i < inode->table->ctxcount; i++) {
                                 inode_ctx[i] = inode->_ctx[i];
                         }
                 }
@@ -1652,7 +1652,7 @@ unlock:
         UNLOCK(&inode->lock);
 
         if (inode_ctx && (dump_options.xl_options.dump_inodectx == _gf_true)) {
-                for (i = 0; i < inode->table->xl->graph->xl_count; i++) {
+                for (i = 0; i < inode->table->ctxcount; i++) {
                         if (inode_ctx[i].xl_key) {
                                 xl = (xlator_t *)(long)inode_ctx[i].xl_key;
                                 if (xl->dumpops && xl->dumpops->inodectx)
diff --git a/libglusterfs/src/inode.h b/libglusterfs/src/inode.h
index 199ce44849a..cf766a31bc6 100644
--- a/libglusterfs/src/inode.h
+++ b/libglusterfs/src/inode.h
@@ -56,6 +56,7 @@ struct _inode_table {
         struct mem_pool   *inode_pool;  /* memory pool for inodes */
         struct mem_pool   *dentry_pool; /* memory pool for dentrys */
         struct mem_pool   *fd_mem_pool; /* memory pool for fd_t */
+        int                ctxcount;    /* number of slots in inode->ctx */
 };