ext4: fix spelling errors and a comment in extent_status tree

Replace "assertation" with "assertion" in lots and lots of debugging
messages.

Correct the comment stating when ext4_es_insert_extent() is used.  It
was no doubt tree at one point, but it is no longer true...

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Zheng Liu <gnehzuil.liu@gmail.com>

fs/ext4/extents_status.c

@@ -439,7 +439,7 @@ static void ext4_es_insert_extent_ext_check(struct inode *inode,
 		 */
 		if (!ext4_es_is_written(es) && !ext4_es_is_unwritten(es)) {
 			if (in_range(es->es_lblk, ee_block, ee_len)) {
-				pr_warn("ES insert assertation failed for "
+				pr_warn("ES insert assertion failed for "
 					"inode: %lu we can find an extent "
 					"at block [%d/%d/%llu/%c], but we "
 					"want to add an delayed/hole extent "
@@ -458,7 +458,7 @@ static void ext4_es_insert_extent_ext_check(struct inode *inode,
 		 */
 		if (es->es_lblk < ee_block ||
 		    ext4_es_pblock(es) != ee_start + es->es_lblk - ee_block) {
-			pr_warn("ES insert assertation failed for inode: %lu "
+			pr_warn("ES insert assertion failed for inode: %lu "
 				"ex_status [%d/%d/%llu/%c] != "
 				"es_status [%d/%d/%llu/%c]\n", inode->i_ino,
 				ee_block, ee_len, ee_start,
@@ -468,7 +468,7 @@ static void ext4_es_insert_extent_ext_check(struct inode *inode,
 		}
 
 		if (ee_status ^ es_status) {
-			pr_warn("ES insert assertation failed for inode: %lu "
+			pr_warn("ES insert assertion failed for inode: %lu "
 				"ex_status [%d/%d/%llu/%c] != "
 				"es_status [%d/%d/%llu/%c]\n", inode->i_ino,
 				ee_block, ee_len, ee_start,
@@ -481,7 +481,7 @@ static void ext4_es_insert_extent_ext_check(struct inode *inode,
 		 * that we don't want to add an written/unwritten extent.
 		 */
 		if (!ext4_es_is_delayed(es) && !ext4_es_is_hole(es)) {
-			pr_warn("ES insert assertation failed for inode: %lu "
+			pr_warn("ES insert assertion failed for inode: %lu "
 				"can't find an extent at block %d but we want "
 				"to add an written/unwritten extent "
 				"[%d/%d/%llu/%llx]\n", inode->i_ino,
@@ -519,21 +519,21 @@ static void ext4_es_insert_extent_ind_check(struct inode *inode,
 			 * We want to add a delayed/hole extent but this
 			 * block has been allocated.
 			 */
-			pr_warn("ES insert assertation failed for inode: %lu "
+			pr_warn("ES insert assertion failed for inode: %lu "
 				"We can find blocks but we want to add a "
 				"delayed/hole extent [%d/%d/%llu/%llx]\n",
 				inode->i_ino, es->es_lblk, es->es_len,
 				ext4_es_pblock(es), ext4_es_status(es));
 			return;
 		} else if (ext4_es_is_written(es)) {
 			if (retval != es->es_len) {
-				pr_warn("ES insert assertation failed for "
+				pr_warn("ES insert assertion failed for "
 					"inode: %lu retval %d != es_len %d\n",
 					inode->i_ino, retval, es->es_len);
 				return;
 			}
 			if (map.m_pblk != ext4_es_pblock(es)) {
-				pr_warn("ES insert assertation failed for "
+				pr_warn("ES insert assertion failed for "
 					"inode: %lu m_pblk %llu != "
 					"es_pblk %llu\n",
 					inode->i_ino, map.m_pblk,
@@ -549,7 +549,7 @@ static void ext4_es_insert_extent_ind_check(struct inode *inode,
 		}
 	} else if (retval == 0) {
 		if (ext4_es_is_written(es)) {
-			pr_warn("ES insert assertation failed for inode: %lu "
+			pr_warn("ES insert assertion failed for inode: %lu "
 				"We can't find the block but we want to add "
 				"an written extent [%d/%d/%llu/%llx]\n",
 				inode->i_ino, es->es_lblk, es->es_len,
@@ -632,10 +632,8 @@ static int __es_insert_extent(struct inode *inode, struct extent_status *newes)
 }
 
 /*
- * ext4_es_insert_extent() adds a space to a extent status tree.
- *
- * ext4_es_insert_extent is called by ext4_da_write_begin and
- * ext4_es_remove_extent.
+ * ext4_es_insert_extent() adds information to an inode's extent
+ * status tree.
  *
  * Return 0 on success, error code on failure.
  */

fs/ext4/inode.c

@@ -465,7 +465,7 @@ static void ext4_map_blocks_es_recheck(handle_t *handle,
 	if (es_map->m_lblk != map->m_lblk ||
 	    es_map->m_flags != map->m_flags ||
 	    es_map->m_pblk != map->m_pblk) {
-		printk("ES cache assertation failed for inode: %lu "
+		printk("ES cache assertion failed for inode: %lu "
 		       "es_cached ex [%d/%d/%llu/%x] != "
 		       "found ex [%d/%d/%llu/%x] retval %d flags %x\n",
 		       inode->i_ino, es_map->m_lblk, es_map->m_len,
@@ -558,7 +558,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
 
 #ifdef ES_AGGRESSIVE_TEST
 		if (retval != map->m_len) {
-			printk("ES len assertation failed for inode: %lu "
+			printk("ES len assertion failed for inode: %lu "
 			       "retval %d != map->m_len %d "
 			       "in %s (lookup)\n", inode->i_ino, retval,
 			       map->m_len, __func__);
@@ -659,7 +659,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
 
 #ifdef ES_AGGRESSIVE_TEST
 		if (retval != map->m_len) {
-			printk("ES len assertation failed for inode: %lu "
+			printk("ES len assertion failed for inode: %lu "
 			       "retval %d != map->m_len %d "
 			       "in %s (allocation)\n", inode->i_ino, retval,
 			       map->m_len, __func__);
@@ -1642,7 +1642,7 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
 
 #ifdef ES_AGGRESSIVE_TEST
 		if (retval != map->m_len) {
-			printk("ES len assertation failed for inode: %lu "
+			printk("ES len assertion failed for inode: %lu "
 			       "retval %d != map->m_len %d "
 			       "in %s (lookup)\n", inode->i_ino, retval,
 			       map->m_len, __func__);