cluster/dht: whitespace cleanup

also fill tabs by spaces (untabify), and indent the code

Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 2346 (Log message enhancements in GlusterFS - phase 1)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346

1 files changed, 333 insertions, 333 deletions

diff --git a/xlators/cluster/dht/src/nufa.c b/xlators/cluster/dht/src/nufa.c
index 09388cbb005..6f81269d6b1 100644
--- a/xlators/cluster/dht/src/nufa.c
+++ b/xlators/cluster/dht/src/nufa.c
@@ -1,20 +1,20 @@
 /*
-   Copyright (c) 2008-2010 Gluster, Inc. <http://www.gluster.com>
-   This file is part of GlusterFS.
-
-   GlusterFS is free software; you can redistribute it and/or modify
-   it under the terms of the GNU Affero General Public License as published
-   by the Free Software Foundation; either version 3 of the License,
-   or (at your option) any later version.
-
-   GlusterFS is distributed in the hope that it will be useful, but
-   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Affero General Public License for more details.
-
-   You should have received a copy of the GNU Affero General Public License
-   along with this program.  If not, see
-   <http://www.gnu.org/licenses/>.
+  Copyright (c) 2008-2010 Gluster, Inc. <http://www.gluster.com>
+  This file is part of GlusterFS.
+
+  GlusterFS is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published
+  by the Free Software Foundation; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Affero General Public License for more details.
+
+  You should have received a copy of the GNU Affero General Public License
+  along with this program.  If not, see
+  <http://www.gnu.org/licenses/>.
 */
 
 
@@ -29,7 +29,7 @@
 
 int
 nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-		       int op_ret, int op_errno,
+                       int op_ret, int op_errno,
                        inode_t *inode, struct iatt *stbuf, dict_t *xattr,
                        struct iatt *postparent)
 {
@@ -41,7 +41,7 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         loc_t        *loc         = NULL;
         int           i           = 0;
         call_frame_t *prev        = NULL;
-	int           call_cnt    = 0;
+        int           call_cnt    = 0;
         int           ret         = 0;
 
 
@@ -51,13 +51,13 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         local = frame->local;
         loc   = &local->loc;
 
-	if (ENTRY_MISSING (op_ret, op_errno)) {
-		if (conf->search_unhashed) {
-			local->op_errno = ENOENT;
-			dht_lookup_everywhere (frame, this, loc);
-			return 0;
-		}
-	}
+        if (ENTRY_MISSING (op_ret, op_errno)) {
+                if (conf->search_unhashed) {
+                        local->op_errno = ENOENT;
+                        dht_lookup_everywhere (frame, this, loc);
+                        return 0;
+                }
+        }
 
         if (op_ret == -1)
                 goto out;
@@ -68,40 +68,40 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
         if (!is_dir && !is_linkfile) {
                 /* non-directory and not a linkfile */
 
-		dht_itransform (this, prev->this, stbuf->ia_ino,
-				&stbuf->ia_ino);
+                dht_itransform (this, prev->this, stbuf->ia_ino,
+                                &stbuf->ia_ino);
 
-		ret = dht_layout_preset (this, prev->this, inode);
-		if (ret < 0) {
-			gf_log (this->name, GF_LOG_DEBUG,
-				"could not set pre-set layout for subvol %s",
-				prev->this->name);
-			op_ret   = -1;
-			op_errno = EINVAL;
-			goto err;
-		}
+                ret = dht_layout_preset (this, prev->this, inode);
+                if (ret < 0) {
+                        gf_log (this->name, GF_LOG_DEBUG,
+                                "could not set pre-set layout for subvol %s",
+                                prev->this->name);
+                        op_ret   = -1;
+                        op_errno = EINVAL;
+                        goto err;
+                }
 
                 goto out;
         }
 
         if (is_dir) {
                 call_cnt        = conf->subvolume_cnt;
-		local->call_cnt = call_cnt;
+                local->call_cnt = call_cnt;
 
                 local->inode = inode_ref (inode);
                 local->xattr = dict_ref (xattr);
 
-		local->op_ret = 0;
-		local->op_errno = 0;
+                local->op_ret = 0;
+                local->op_errno = 0;
 
-		local->layout = dht_layout_new (this, conf->subvolume_cnt);
-		if (!local->layout) {
-			op_ret   = -1;
-			op_errno = ENOMEM;
-			gf_log (this->name, GF_LOG_DEBUG,
-				"memory allocation failed :(");
-			goto err;
-		}
+                local->layout = dht_layout_new (this, conf->subvolume_cnt);
+                if (!local->layout) {
+                        op_ret   = -1;
+                        op_errno = ENOMEM;
+                        gf_log (this->name, GF_LOG_DEBUG,
+                                "memory allocation failed :(");
+                        goto err;
+                }
 
                 for (i = 0; i < call_cnt; i++) {
                         STACK_WIND (frame, dht_lookup_dir_cbk,
@@ -118,34 +118,34 @@ nufa_local_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                         gf_log (this->name, GF_LOG_DEBUG,
                                 "linkfile not having link subvolume. path=%s",
                                 loc->path);
-			dht_lookup_everywhere (frame, this, loc);
-			return 0;
+                        dht_lookup_everywhere (frame, this, loc);
+                        return 0;
                 }
 
-		STACK_WIND (frame, dht_lookup_linkfile_cbk,
-			    subvol, subvol->fops->lookup,
-			    &local->loc, local->xattr_req);
+                STACK_WIND (frame, dht_lookup_linkfile_cbk,
+                            subvol, subvol->fops->lookup,
+                            &local->loc, local->xattr_req);
         }
 
         return 0;
 
 out:
-	if (!local->hashed_subvol) {
-		gf_log (this->name, GF_LOG_DEBUG,
-			"no subvolume in layout for path=%s",
-			local->loc.path);
+        if (!local->hashed_subvol) {
+                gf_log (this->name, GF_LOG_DEBUG,
+                        "no subvolume in layout for path=%s",
+                        local->loc.path);
                 local->op_errno = ENOENT;
                 dht_lookup_everywhere (frame, this, loc);
                 return 0;
-	}
+        }
 
-	STACK_WIND (frame, dht_lookup_cbk,
-		    local->hashed_subvol, local->hashed_subvol->fops->lookup,
-		    &local->loc, local->xattr_req);
+        STACK_WIND (frame, dht_lookup_cbk,
+                    local->hashed_subvol, local->hashed_subvol->fops->lookup,
+                    &local->loc, local->xattr_req);
 
-	return 0;
+        return 0;
 
- err:
+err:
         DHT_STACK_UNWIND (lookup, frame, op_ret, op_errno,
                           inode, stbuf, xattr, NULL);
         return 0;
@@ -153,18 +153,18 @@ out:
 
 int
 nufa_lookup (call_frame_t *frame, xlator_t *this,
-	     loc_t *loc, dict_t *xattr_req)
+             loc_t *loc, dict_t *xattr_req)
 {
         xlator_t     *hashed_subvol = NULL;
         xlator_t     *cached_subvol = NULL;
         xlator_t     *subvol = NULL;
         dht_local_t  *local  = NULL;
-	dht_conf_t   *conf = NULL;
+        dht_conf_t   *conf = NULL;
         int           ret    = -1;
         int           op_errno = -1;
-	dht_layout_t *layout = NULL;
-	int           i = 0;
-	int           call_cnt = 0;
+        dht_layout_t *layout = NULL;
+        int           i = 0;
+        int           call_cnt = 0;
 
 
         VALIDATE_OR_GOTO (frame, err);
@@ -173,15 +173,15 @@ nufa_lookup (call_frame_t *frame, xlator_t *this,
         VALIDATE_OR_GOTO (loc->inode, err);
         VALIDATE_OR_GOTO (loc->path, err);
 
-	conf = this->private;
+        conf = this->private;
 
         local = dht_local_init (frame);
-	if (!local) {
-		op_errno = ENOMEM;
-		gf_log (this->name, GF_LOG_ERROR,
-			"Out of memory");
-		goto err;
-	}
+        if (!local) {
+                op_errno = ENOMEM;
+                gf_log (this->name, GF_LOG_ERROR,
+                        "Out of memory");
+                goto err;
+        }
 
         ret = loc_dup (loc, &local->loc);
         if (ret == -1) {
@@ -192,20 +192,20 @@ nufa_lookup (call_frame_t *frame, xlator_t *this,
                 goto err;
         }
 
-	if (xattr_req) {
-		local->xattr_req = dict_ref (xattr_req);
-	} else {
-		local->xattr_req = dict_new ();
-	}
+        if (xattr_req) {
+                local->xattr_req = dict_ref (xattr_req);
+        } else {
+                local->xattr_req = dict_new ();
+        }
 
-	hashed_subvol = dht_subvol_get_hashed (this, &local->loc);
-	cached_subvol = dht_subvol_get_cached (this, local->loc.inode);
+        hashed_subvol = dht_subvol_get_hashed (this, &local->loc);
+        cached_subvol = dht_subvol_get_cached (this, local->loc.inode);
 
-	local->cached_subvol = cached_subvol;
-	local->hashed_subvol = hashed_subvol;
+        local->cached_subvol = cached_subvol;
+        local->hashed_subvol = hashed_subvol;
 
         if (is_revalidate (loc)) {
-		local->layout = layout = dht_layout_get (this, loc->inode);
+                local->layout = layout = dht_layout_get (this, loc->inode);
 
                 if (!layout) {
                         gf_log (this->name, GF_LOG_DEBUG,
@@ -215,25 +215,25 @@ nufa_lookup (call_frame_t *frame, xlator_t *this,
                         goto err;
                 }
 
-		if (layout->gen && (layout->gen < conf->gen)) {
-			gf_log (this->name, GF_LOG_DEBUG,
-				"incomplete layout failure for path=%s",
-				loc->path);
+                if (layout->gen && (layout->gen < conf->gen)) {
+                        gf_log (this->name, GF_LOG_DEBUG,
+                                "incomplete layout failure for path=%s",
+                                loc->path);
                         dht_layout_unref (this, local->layout);
-			goto do_fresh_lookup;
-		}
+                        goto do_fresh_lookup;
+                }
 
-		local->inode    = inode_ref (loc->inode);
-		local->ia_ino   = loc->inode->ino;
+                local->inode    = inode_ref (loc->inode);
+                local->ia_ino   = loc->inode->ino;
 
-		local->call_cnt = layout->cnt;
-		call_cnt = local->call_cnt;
+                local->call_cnt = layout->cnt;
+                call_cnt = local->call_cnt;
 
-		/* NOTE: we don't require 'trusted.glusterfs.dht.linkto' attribute,
-		 *       revalidates directly go to the cached-subvolume.
-		 */
-		ret = dict_set_uint32 (local->xattr_req,
-				       "trusted.glusterfs.dht", 4 * 4);
+                /* NOTE: we don't require 'trusted.glusterfs.dht.linkto' attribute,
+                 *       revalidates directly go to the cached-subvolume.
+                 */
+                ret = dict_set_uint32 (local->xattr_req,
+                                       "trusted.glusterfs.dht", 4 * 4);
                 if (ret < 0) {
                         gf_log (this->name, GF_LOG_ERROR,
                                 "Failed to set dict value.");
@@ -241,20 +241,20 @@ nufa_lookup (call_frame_t *frame, xlator_t *this,
                         goto err;
                 }
 
-		for (i = 0; i < layout->cnt; i++) {
-			subvol = layout->list[i].xlator;
+                for (i = 0; i < layout->cnt; i++) {
+                        subvol = layout->list[i].xlator;
 
-			STACK_WIND (frame, dht_revalidate_cbk,
-				    subvol, subvol->fops->lookup,
-				    loc, local->xattr_req);
+                        STACK_WIND (frame, dht_revalidate_cbk,
+                                    subvol, subvol->fops->lookup,
+                                    loc, local->xattr_req);
 
-			if (!--call_cnt)
-				break;
-		}
-	} else {
+                        if (!--call_cnt)
+                                break;
+                }
+        } else {
         do_fresh_lookup:
-		ret = dict_set_uint32 (local->xattr_req,
-				       "trusted.glusterfs.dht", 4 * 4);
+                ret = dict_set_uint32 (local->xattr_req,
+                                       "trusted.glusterfs.dht", 4 * 4);
                 if (ret < 0) {
                         gf_log (this->name, GF_LOG_ERROR,
                                 "Failed to set dict value.");
@@ -262,8 +262,8 @@ nufa_lookup (call_frame_t *frame, xlator_t *this,
                         goto err;
                 }
 
-		ret = dict_set_uint32 (local->xattr_req,
-				       "trusted.glusterfs.dht.linkto", 256);
+                ret = dict_set_uint32 (local->xattr_req,
+                                       "trusted.glusterfs.dht.linkto", 256);
                 if (ret < 0) {
                         gf_log (this->name, GF_LOG_ERROR,
                                 "Failed to set dict value.");
@@ -271,84 +271,84 @@ nufa_lookup (call_frame_t *frame, xlator_t *this,
                         goto err;
                 }
 
-		/* Send it to only local volume */
-		STACK_WIND (frame, nufa_local_lookup_cbk,
-			    (xlator_t *)conf->private,
-			    ((xlator_t *)conf->private)->fops->lookup,
-			    loc, local->xattr_req);
-	}
+                /* Send it to only local volume */
+                STACK_WIND (frame, nufa_local_lookup_cbk,
+                            (xlator_t *)conf->private,
+                            ((xlator_t *)conf->private)->fops->lookup,
+                            loc, local->xattr_req);
+        }
 
         return 0;
 
 err:
-	op_errno = (op_errno == -1) ? errno : op_errno;
+        op_errno = (op_errno == -1) ? errno : op_errno;
         DHT_STACK_UNWIND (lookup, frame, -1, op_errno, NULL, NULL, NULL, NULL);
-	return 0;
+        return 0;
 }
 
 int
 nufa_create_linkfile_create_cbk (call_frame_t *frame, void *cookie,
-				 xlator_t *this, int op_ret, int op_errno,
+                                 xlator_t *this, int op_ret, int op_errno,
                                  inode_t *inode, struct iatt *stbuf,
                                  struct iatt *preparent,
                                  struct iatt *postparent)
 {
-	dht_local_t  *local = NULL;
+        dht_local_t  *local = NULL;
 
-	local = frame->local;
+        local = frame->local;
 
-	if (op_ret == -1)
-		goto err;
+        if (op_ret == -1)
+                goto err;
 
-	STACK_WIND (frame, dht_create_cbk,
-		    local->cached_subvol, local->cached_subvol->fops->create,
-		    &local->loc, local->flags, local->mode, local->fd,
+        STACK_WIND (frame, dht_create_cbk,
+                    local->cached_subvol, local->cached_subvol->fops->create,
+                    &local->loc, local->flags, local->mode, local->fd,
                     local->params);
 
-	return 0;
+        return 0;
 
- err:
-	DHT_STACK_UNWIND (create, frame, -1, op_errno,
+err:
+        DHT_STACK_UNWIND (create, frame, -1, op_errno,
                           NULL, NULL, NULL, NULL, NULL);
-	return 0;
+        return 0;
 }
 
 int
 nufa_create (call_frame_t *frame, xlator_t *this,
-	     loc_t *loc, int32_t flags, mode_t mode,
+             loc_t *loc, int32_t flags, mode_t mode,
              fd_t *fd, dict_t *params)
 {
-	dht_local_t *local = NULL;
-	dht_conf_t  *conf  = NULL;
-	xlator_t    *subvol = NULL;
+        dht_local_t *local = NULL;
+        dht_conf_t  *conf  = NULL;
+        xlator_t    *subvol = NULL;
         xlator_t    *avail_subvol = NULL;
-	int          op_errno = -1;
-	int          ret = -1;
+        int          op_errno = -1;
+        int          ret = -1;
 
-	VALIDATE_OR_GOTO (frame, err);
-	VALIDATE_OR_GOTO (this, err);
-	VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
 
-	conf  = this->private;
+        conf  = this->private;
 
         dht_get_du_info (frame, this, loc);
 
         local = dht_local_init (frame);
-	if (!local) {
-		op_errno = ENOMEM;
-		gf_log (this->name, GF_LOG_ERROR,
-			"Out of memory");
-		goto err;
-	}
-
-	subvol = dht_subvol_get_hashed (this, loc);
-	if (!subvol) {
-		gf_log (this->name, GF_LOG_DEBUG,
-			"no subvolume in layout for path=%s",
-			loc->path);
-		op_errno = ENOENT;
-		goto err;
-	}
+        if (!local) {
+                op_errno = ENOMEM;
+                gf_log (this->name, GF_LOG_ERROR,
+                        "Out of memory");
+                goto err;
+        }
+
+        subvol = dht_subvol_get_hashed (this, loc);
+        if (!subvol) {
+                gf_log (this->name, GF_LOG_DEBUG,
+                        "no subvolume in layout for path=%s",
+                        loc->path);
+                op_errno = ENOENT;
+                goto err;
+        }
 
         avail_subvol = conf->private;
         if (dht_is_subvol_filled (this, (xlator_t *)conf->private)) {
@@ -361,10 +361,10 @@ nufa_create (call_frame_t *frame, xlator_t *this,
                 /* create a link file instead of actual file */
                 ret = loc_copy (&local->loc, loc);
                 if (ret == -1) {
-                                gf_log (this->name, GF_LOG_ERROR,
-                                        "Out of memory");
-                                op_errno = ENOMEM;
-                                goto err;
+                        gf_log (this->name, GF_LOG_ERROR,
+                                "Out of memory");
+                        op_errno = ENOMEM;
+                        goto err;
                 }
 
                 local->fd = fd_ref (fd);
@@ -389,11 +389,11 @@ nufa_create (call_frame_t *frame, xlator_t *this,
         return 0;
 
 err:
-	op_errno = (op_errno == -1) ? errno : op_errno;
-	DHT_STACK_UNWIND (create, frame, -1, op_errno,
+        op_errno = (op_errno == -1) ? errno : op_errno;
+        DHT_STACK_UNWIND (create, frame, -1, op_errno,
                           NULL, NULL, NULL, NULL, NULL);
 
-	return 0;
+        return 0;
 }
 
 int
@@ -402,64 +402,64 @@ nufa_mknod_linkfile_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
                          struct iatt *stbuf, struct iatt *preparent,
                          struct iatt *postparent)
 {
-	dht_local_t  *local = NULL;
+        dht_local_t  *local = NULL;
 
-	local = frame->local;
+        local = frame->local;
 
-	if (op_ret >= 0) {
-		STACK_WIND (frame, dht_newfile_cbk,
-			    local->cached_subvol,
-			    local->cached_subvol->fops->mknod,
-			    &local->loc, local->mode, local->rdev,
+        if (op_ret >= 0) {
+                STACK_WIND (frame, dht_newfile_cbk,
+                            local->cached_subvol,
+                            local->cached_subvol->fops->mknod,
+                            &local->loc, local->mode, local->rdev,
                             local->params);
 
-		return 0;
-	}
+                return 0;
+        }
 
         WIPE (postparent);
         WIPE (preparent);
 
-	DHT_STACK_UNWIND (link, frame, op_ret, op_errno,
+        DHT_STACK_UNWIND (link, frame, op_ret, op_errno,
                           inode, stbuf, preparent, postparent);
-	return 0;
+        return 0;
 }
 
 
 int
 nufa_mknod (call_frame_t *frame, xlator_t *this,
-	    loc_t *loc, mode_t mode, dev_t rdev, dict_t *params)
+            loc_t *loc, mode_t mode, dev_t rdev, dict_t *params)
 {
-	dht_local_t *local = NULL;
-	dht_conf_t  *conf  = NULL;
-	xlator_t    *subvol = NULL;
+        dht_local_t *local = NULL;
+        dht_conf_t  *conf  = NULL;
+        xlator_t    *subvol = NULL;
         xlator_t    *avail_subvol = NULL;
-	int          op_errno = -1;
-	int          ret = -1;
+        int          op_errno = -1;
+        int          ret = -1;
 
-	VALIDATE_OR_GOTO (frame, err);
-	VALIDATE_OR_GOTO (this, err);
-	VALIDATE_OR_GOTO (loc, err);
+        VALIDATE_OR_GOTO (frame, err);
+        VALIDATE_OR_GOTO (this, err);
+        VALIDATE_OR_GOTO (loc, err);
 
-	conf  = this->private;
+        conf  = this->private;
 
         dht_get_du_info (frame, this, loc);
 
         local = dht_local_init (frame);
-	if (!local) {
-		op_errno = ENOMEM;
-		gf_log (this->name, GF_LOG_ERROR,
-			"Out of memory");
-		goto err;
-	}
-
-	subvol = dht_subvol_get_hashed (this, loc);
-	if (!subvol) {
-		gf_log (this->name, GF_LOG_DEBUG,
-			"no subvolume in layout for path=%s",
-			loc->path);
-		op_errno = ENOENT;
-		goto err;
-	}
+        if (!local) {
+                op_errno = ENOMEM;
+                gf_log (this->name, GF_LOG_ERROR,
+                        "Out of memory");
+                goto err;
+        }
+
+        subvol = dht_subvol_get_hashed (this, loc);
+        if (!subvol) {
+                gf_log (this->name, GF_LOG_DEBUG,
+                        "no subvolume in layout for path=%s",
+                        loc->path);
+                op_errno = ENOENT;
+                goto err;
+        }
 
         /* Consider the disksize in consideration */
         avail_subvol = conf->private;
@@ -469,52 +469,52 @@ nufa_mknod (call_frame_t *frame, xlator_t *this,
                                                         (xlator_t *)conf->private);
         }
 
-	if (avail_subvol != subvol) {
-		/* Create linkfile first */
-		ret = loc_copy (&local->loc, loc);
-		if (ret == -1) {
-			gf_log (this->name, GF_LOG_ERROR,
-				"Out of memory");
-			op_errno = ENOMEM;
-			goto err;
-		}
+        if (avail_subvol != subvol) {
+                /* Create linkfile first */
+                ret = loc_copy (&local->loc, loc);
+                if (ret == -1) {
+                        gf_log (this->name, GF_LOG_ERROR,
+                                "Out of memory");
+                        op_errno = ENOMEM;
+                        goto err;
+                }
 
                 local->params = dict_ref (params);
-		local->mode = mode;
-		local->rdev = rdev;
-		local->cached_subvol = avail_subvol;
+                local->mode = mode;
+                local->rdev = rdev;
+                local->cached_subvol = avail_subvol;
 
-		dht_linkfile_create (frame, nufa_mknod_linkfile_cbk,
+                dht_linkfile_create (frame, nufa_mknod_linkfile_cbk,
                                      avail_subvol, subvol, loc);
-		return 0;
-	}
+                return 0;
+        }
 
-	gf_log (this->name, GF_LOG_TRACE,
-		"creating %s on %s", loc->path, subvol->name);
+        gf_log (this->name, GF_LOG_TRACE,
+                "creating %s on %s", loc->path, subvol->name);
 
-	STACK_WIND (frame, dht_newfile_cbk,
-		    subvol, subvol->fops->mknod,
-		    loc, mode, rdev, params);
+        STACK_WIND (frame, dht_newfile_cbk,
+                    subvol, subvol->fops->mknod,
+                    loc, mode, rdev, params);
 
-	return 0;
+        return 0;
 
 err:
-	op_errno = (op_errno == -1) ? errno : op_errno;
-	DHT_STACK_UNWIND (mknod, frame, -1, op_errno,
+        op_errno = (op_errno == -1) ? errno : op_errno;
+        DHT_STACK_UNWIND (mknod, frame, -1, op_errno,
                           NULL, NULL, NULL, NULL);
 
-	return 0;
+        return 0;
 }
 
 
 int
 notify (xlator_t *this, int event, void *data, ...)
 {
-	int ret = -1;
+        int ret = -1;
 
-	ret = dht_notify (this, event, data);
+        ret = dht_notify (this, event, data);
 
-	return ret;
+        return ret;
 }
 
 void
@@ -523,7 +523,7 @@ fini (xlator_t *this)
         int         i = 0;
         dht_conf_t *conf = NULL;
 
-	conf = this->private;
+        conf = this->private;
 
         if (conf) {
                 if (conf->file_layouts) {
@@ -539,38 +539,38 @@ fini (xlator_t *this)
                 if (conf->subvolumes)
                         GF_FREE (conf->subvolumes);
 
-		if (conf->subvolume_status)
-			GF_FREE (conf->subvolume_status);
+                if (conf->subvolume_status)
+                        GF_FREE (conf->subvolume_status);
 
                 GF_FREE (conf);
         }
 
-	return;
+        return;
 }
 
 int
 init (xlator_t *this)
 {
         dht_conf_t    *conf = NULL;
-	xlator_list_t *trav = NULL;
-	data_t        *data = NULL;
-	char          *local_volname = NULL;
-	char          *temp_str = NULL;
+        xlator_list_t *trav = NULL;
+        data_t        *data = NULL;
+        char          *local_volname = NULL;
+        char          *temp_str = NULL;
         int            ret = -1;
         int            i = 0;
-	char           my_hostname[256];
-	uint32_t       temp_free_disk = 0;
+        char           my_hostname[256];
+        uint32_t       temp_free_disk = 0;
 
-	if (!this->children) {
-		gf_log (this->name, GF_LOG_CRITICAL,
-			"NUFA needs more than one subvolume");
-		return -1;
-	}
+        if (!this->children) {
+                gf_log (this->name, GF_LOG_CRITICAL,
+                        "NUFA needs more than one subvolume");
+                return -1;
+        }
 
-	if (!this->parents) {
-		gf_log (this->name, GF_LOG_WARNING,
-			"dangling volume. check volfile");
-	}
+        if (!this->parents) {
+                gf_log (this->name, GF_LOG_WARNING,
+                        "dangling volume. check volfile");
+        }
 
         conf = GF_CALLOC (1, sizeof (*conf),
                           gf_dht_mt_dht_conf_t);
@@ -581,13 +581,13 @@ init (xlator_t *this)
         }
 
         conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_ON;
-	if (dict_get_str (this->options, "lookup-unhashed", &temp_str) == 0) {
+        if (dict_get_str (this->options, "lookup-unhashed", &temp_str) == 0) {
                 /* If option is not "auto", other options _should_ be boolean */
                 if (strcasecmp (temp_str, "auto"))
                         gf_string2boolean (temp_str, &conf->search_unhashed);
                 else
                         conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_AUTO;
-	}
+        }
 
         ret = dht_init_subvolumes (this, conf);
         if (ret == -1) {
@@ -599,44 +599,44 @@ init (xlator_t *this)
                 goto err;
         }
 
-	LOCK_INIT (&conf->subvolume_lock);
-	LOCK_INIT (&conf->layout_lock);
-
-	conf->gen = 1;
-
-	local_volname = "localhost";
-	ret = gethostname (my_hostname, 256);
-	if (ret < 0) {
-		gf_log (this->name, GF_LOG_WARNING,
-			"could not find hostname (%s)",
-			strerror (errno));
-	}
-
-	if (ret == 0)
-		local_volname = my_hostname;
-
-	data = dict_get (this->options, "local-volume-name");
-	if (data) {
-		local_volname = data->data;
-	}
-
-	trav = this->children;
-	while (trav) {
-		if (strcmp (trav->xlator->name, local_volname) == 0)
-			break;
-		trav = trav->next;
-	}
-
-	if (!trav) {
-		gf_log (this->name, GF_LOG_ERROR,
-			"Could not find subvolume named '%s'. "
-			"Please define volume with the name as the hostname "
-			"or override it with 'option local-volume-name'",
-			local_volname);
-		goto err;
-	}
-	/* The volume specified exists */
-	conf->private = trav->xlator;
+        LOCK_INIT (&conf->subvolume_lock);
+        LOCK_INIT (&conf->layout_lock);
+
+        conf->gen = 1;
+
+        local_volname = "localhost";
+        ret = gethostname (my_hostname, 256);
+        if (ret < 0) {
+                gf_log (this->name, GF_LOG_WARNING,
+                        "could not find hostname (%s)",
+                        strerror (errno));
+        }
+
+        if (ret == 0)
+                local_volname = my_hostname;
+
+        data = dict_get (this->options, "local-volume-name");
+        if (data) {
+                local_volname = data->data;
+        }
+
+        trav = this->children;
+        while (trav) {
+                if (strcmp (trav->xlator->name, local_volname) == 0)
+                        break;
+                trav = trav->next;
+        }
+
+        if (!trav) {
+                gf_log (this->name, GF_LOG_ERROR,
+                        "Could not find subvolume named '%s'. "
+                        "Please define volume with the name as the hostname "
+                        "or override it with 'option local-volume-name'",
+                        local_volname);
+                goto err;
+        }
+        /* The volume specified exists */
+        conf->private = trav->xlator;
 
         conf->min_free_disk = 10;
         conf->disk_unit = 'p';
@@ -647,7 +647,7 @@ init (xlator_t *this)
                                        &temp_free_disk) == 0) {
                         if (temp_free_disk > 100) {
                                 gf_string2bytesize (temp_str,
-                                                        &conf->min_free_disk);
+                                                    &conf->min_free_disk);
                                 conf->disk_unit = 'b';
                         } else {
                                 conf->min_free_disk = (uint64_t)temp_free_disk;
@@ -655,7 +655,7 @@ init (xlator_t *this)
                         }
                 } else {
                         gf_string2bytesize (temp_str,
-                                                &conf->min_free_disk);
+                                            &conf->min_free_disk);
                         conf->disk_unit = 'b';
                 }
         }
@@ -687,8 +687,8 @@ err:
                 if (conf->subvolumes)
                         GF_FREE (conf->subvolumes);
 
-		if (conf->subvolume_status)
-			GF_FREE (conf->subvolume_status);
+                if (conf->subvolume_status)
+                        GF_FREE (conf->subvolume_status);
 
                 if (conf->du_stats)
                         GF_FREE (conf->du_stats);
@@ -701,48 +701,48 @@ err:
 
 
 struct xlator_fops fops = {
-	.lookup      = nufa_lookup,
-	.create      = nufa_create,
-	.mknod       = nufa_mknod,
-
-	.stat        = dht_stat,
-	.fstat       = dht_fstat,
-	.truncate    = dht_truncate,
-	.ftruncate   = dht_ftruncate,
-	.access      = dht_access,
-	.readlink    = dht_readlink,
-	.setxattr    = dht_setxattr,
-	.getxattr    = dht_getxattr,
-	.removexattr = dht_removexattr,
-	.open        = dht_open,
-	.readv       = dht_readv,
-	.writev      = dht_writev,
-	.flush       = dht_flush,
-	.fsync       = dht_fsync,
-	.statfs      = dht_statfs,
-	.lk          = dht_lk,
-	.opendir     = dht_opendir,
-	.readdir     = dht_readdir,
-	.readdirp    = dht_readdirp,
-	.fsyncdir    = dht_fsyncdir,
-	.symlink     = dht_symlink,
-	.unlink      = dht_unlink,
-	.link        = dht_link,
-	.mkdir       = dht_mkdir,
-	.rmdir       = dht_rmdir,
-	.rename      = dht_rename,
-	.inodelk     = dht_inodelk,
-	.finodelk    = dht_finodelk,
-	.entrylk     = dht_entrylk,
-	.fentrylk    = dht_fentrylk,
-	.xattrop     = dht_xattrop,
-	.fxattrop    = dht_fxattrop,
+        .lookup      = nufa_lookup,
+        .create      = nufa_create,
+        .mknod       = nufa_mknod,
+
+        .stat        = dht_stat,
+        .fstat       = dht_fstat,
+        .truncate    = dht_truncate,
+        .ftruncate   = dht_ftruncate,
+        .access      = dht_access,
+        .readlink    = dht_readlink,
+        .setxattr    = dht_setxattr,
+        .getxattr    = dht_getxattr,
+        .removexattr = dht_removexattr,
+        .open        = dht_open,
+        .readv       = dht_readv,
+        .writev      = dht_writev,
+        .flush       = dht_flush,
+        .fsync       = dht_fsync,
+        .statfs      = dht_statfs,
+        .lk          = dht_lk,
+        .opendir     = dht_opendir,
+        .readdir     = dht_readdir,
+        .readdirp    = dht_readdirp,
+        .fsyncdir    = dht_fsyncdir,
+        .symlink     = dht_symlink,
+        .unlink      = dht_unlink,
+        .link        = dht_link,
+        .mkdir       = dht_mkdir,
+        .rmdir       = dht_rmdir,
+        .rename      = dht_rename,
+        .inodelk     = dht_inodelk,
+        .finodelk    = dht_finodelk,
+        .entrylk     = dht_entrylk,
+        .fentrylk    = dht_fentrylk,
+        .xattrop     = dht_xattrop,
+        .fxattrop    = dht_fxattrop,
         .setattr     = dht_setattr,
 };
 
 
 struct xlator_cbks cbks = {
-	.forget     = dht_forget
+        .forget     = dht_forget
 };
 
 
@@ -750,13 +750,13 @@ struct volume_options options[] = {
         { .key  = {"lookup-unhashed"},
           .value = {"auto", "yes", "no", "enable", "disable", "1", "0",
                     "on", "off"},
-	  .type = GF_OPTION_TYPE_STR
-	},
-	{ .key  = {"local-volume-name"},
-	  .type = GF_OPTION_TYPE_XLATOR
-	},
+          .type = GF_OPTION_TYPE_STR
+        },
+        { .key  = {"local-volume-name"},
+          .type = GF_OPTION_TYPE_XLATOR
+        },
         { .key  = {"min-free-disk"},
           .type = GF_OPTION_TYPE_PERCENT_OR_SIZET,
         },
-	{ .key  = {NULL} },
+        { .key  = {NULL} },
 };