reiserfs: rework reiserfs_warning

ReiserFS warnings can be somewhat inconsistent.
In some cases:
 * a unique identifier may be associated with it
 * the function name may be included
 * the device may be printed separately

This patch aims to make warnings more consistent. reiserfs_warning() prints
the device name, so printing it a second time is not required. The function
name for a warning is always helpful in debugging, so it is now automatically
inserted into the output. Hans has stated that every warning should have
a unique identifier. Some cases lack them, others really shouldn't have them.
reiserfs_warning() now expects an id associated with each message. In the
rare case where one isn't needed, "" will suffice.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 50 insertions, 57 deletions

diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index abbc64dcc8d..f328d27a19d 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -444,23 +444,24 @@ static int is_leaf(char *buf, int blocksize, struct buffer_head *bh)
 
 	blkh = (struct block_head *)buf;
 	if (blkh_level(blkh) != DISK_LEAF_NODE_LEVEL) {
-		reiserfs_warning(NULL,
-				 "is_leaf: this should be caught earlier");
+		reiserfs_warning(NULL, "reiserfs-5080",
+				 "this should be caught earlier");
 		return 0;
 	}
 
 	nr = blkh_nr_item(blkh);
 	if (nr < 1 || nr > ((blocksize - BLKH_SIZE) / (IH_SIZE + MIN_ITEM_LEN))) {
 		/* item number is too big or too small */
-		reiserfs_warning(NULL, "is_leaf: nr_item seems wrong: %z", bh);
+		reiserfs_warning(NULL, "reiserfs-5081",
+				 "nr_item seems wrong: %z", bh);
 		return 0;
 	}
 	ih = (struct item_head *)(buf + BLKH_SIZE) + nr - 1;
 	used_space = BLKH_SIZE + IH_SIZE * nr + (blocksize - ih_location(ih));
 	if (used_space != blocksize - blkh_free_space(blkh)) {
 		/* free space does not match to calculated amount of use space */
-		reiserfs_warning(NULL, "is_leaf: free space seems wrong: %z",
-				 bh);
+		reiserfs_warning(NULL, "reiserfs-5082",
+				 "free space seems wrong: %z", bh);
 		return 0;
 	}
 	// FIXME: it is_leaf will hit performance too much - we may have
@@ -471,29 +472,29 @@ static int is_leaf(char *buf, int blocksize, struct buffer_head *bh)
 	prev_location = blocksize;
 	for (i = 0; i < nr; i++, ih++) {
 		if (le_ih_k_type(ih) == TYPE_ANY) {
-			reiserfs_warning(NULL,
-					 "is_leaf: wrong item type for item %h",
+			reiserfs_warning(NULL, "reiserfs-5083",
+					 "wrong item type for item %h",
 					 ih);
 			return 0;
 		}
 		if (ih_location(ih) >= blocksize
 		    || ih_location(ih) < IH_SIZE * nr) {
-			reiserfs_warning(NULL,
-					 "is_leaf: item location seems wrong: %h",
+			reiserfs_warning(NULL, "reiserfs-5084",
+					 "item location seems wrong: %h",
 					 ih);
 			return 0;
 		}
 		if (ih_item_len(ih) < 1
 		    || ih_item_len(ih) > MAX_ITEM_LEN(blocksize)) {
-			reiserfs_warning(NULL,
-					 "is_leaf: item length seems wrong: %h",
+			reiserfs_warning(NULL, "reiserfs-5085",
+					 "item length seems wrong: %h",
 					 ih);
 			return 0;
 		}
 		if (prev_location - ih_location(ih) != ih_item_len(ih)) {
-			reiserfs_warning(NULL,
-					 "is_leaf: item location seems wrong (second one): %h",
-					 ih);
+			reiserfs_warning(NULL, "reiserfs-5086",
+					 "item location seems wrong "
+					 "(second one): %h", ih);
 			return 0;
 		}
 		prev_location = ih_location(ih);
@@ -514,24 +515,23 @@ static int is_internal(char *buf, int blocksize, struct buffer_head *bh)
 	nr = blkh_level(blkh);
 	if (nr <= DISK_LEAF_NODE_LEVEL || nr > MAX_HEIGHT) {
 		/* this level is not possible for internal nodes */
-		reiserfs_warning(NULL,
-				 "is_internal: this should be caught earlier");
+		reiserfs_warning(NULL, "reiserfs-5087",
+				 "this should be caught earlier");
 		return 0;
 	}
 
 	nr = blkh_nr_item(blkh);
 	if (nr > (blocksize - BLKH_SIZE - DC_SIZE) / (KEY_SIZE + DC_SIZE)) {
 		/* for internal which is not root we might check min number of keys */
-		reiserfs_warning(NULL,
-				 "is_internal: number of key seems wrong: %z",
-				 bh);
+		reiserfs_warning(NULL, "reiserfs-5088",
+				 "number of key seems wrong: %z", bh);
 		return 0;
 	}
 
 	used_space = BLKH_SIZE + KEY_SIZE * nr + DC_SIZE * (nr + 1);
 	if (used_space != blocksize - blkh_free_space(blkh)) {
-		reiserfs_warning(NULL,
-				 "is_internal: free space seems wrong: %z", bh);
+		reiserfs_warning(NULL, "reiserfs-5089",
+				 "free space seems wrong: %z", bh);
 		return 0;
 	}
 	// one may imagine much more checks
@@ -543,8 +543,8 @@ static int is_internal(char *buf, int blocksize, struct buffer_head *bh)
 static int is_tree_node(struct buffer_head *bh, int level)
 {
 	if (B_LEVEL(bh) != level) {
-		reiserfs_warning(NULL,
-				 "is_tree_node: node level %d does not match to the expected one %d",
+		reiserfs_warning(NULL, "reiserfs-5090", "node level %d does "
+				 "not match to the expected one %d",
 				 B_LEVEL(bh), level);
 		return 0;
 	}
@@ -645,9 +645,9 @@ int search_by_key(struct super_block *p_s_sb, const struct cpu_key *p_s_key,	/*
 
 #ifdef CONFIG_REISERFS_CHECK
 		if (!(++n_repeat_counter % 50000))
-			reiserfs_warning(p_s_sb, "PAP-5100: search_by_key: %s:"
-					 "there were %d iterations of while loop "
-					 "looking for key %K",
+			reiserfs_warning(p_s_sb, "PAP-5100",
+					 "%s: there were %d iterations of "
+					 "while loop looking for key %K",
 					 current->comm, n_repeat_counter,
 					 p_s_key);
 #endif
@@ -721,9 +721,9 @@ int search_by_key(struct super_block *p_s_sb, const struct cpu_key *p_s_key,	/*
 		// make sure, that the node contents look like a node of
 		// certain level
 		if (!is_tree_node(p_s_bh, expected_level)) {
-			reiserfs_warning(p_s_sb, "vs-5150: search_by_key: "
-					 "invalid format found in block %ld. Fsck?",
-					 p_s_bh->b_blocknr);
+			reiserfs_warning(p_s_sb, "vs-5150",
+					 "invalid format found in block %ld. "
+					 "Fsck?", p_s_bh->b_blocknr);
 			pathrelse(p_s_search_path);
 			return IO_ERROR;
 		}
@@ -1227,8 +1227,7 @@ int reiserfs_delete_item(struct reiserfs_transaction_handle *th, struct treepath
 		if (n_ret_value == IO_ERROR)
 			break;
 		if (n_ret_value == FILE_NOT_FOUND) {
-			reiserfs_warning(p_s_sb,
-					 "vs-5340: reiserfs_delete_item: "
+			reiserfs_warning(p_s_sb, "vs-5340",
 					 "no items of the file %K found",
 					 p_s_item_key);
 			break;
@@ -1338,10 +1337,9 @@ void reiserfs_delete_solid_item(struct reiserfs_transaction_handle *th,
 	while (1) {
 		retval = search_item(th->t_super, &cpu_key, &path);
 		if (retval == IO_ERROR) {
-			reiserfs_warning(th->t_super,
-					 "vs-5350: reiserfs_delete_solid_item: "
-					 "i/o failure occurred trying to delete %K",
-					 &cpu_key);
+			reiserfs_warning(th->t_super, "vs-5350",
+					 "i/o failure occurred trying "
+					 "to delete %K", &cpu_key);
 			break;
 		}
 		if (retval != ITEM_FOUND) {
@@ -1355,9 +1353,8 @@ void reiserfs_delete_solid_item(struct reiserfs_transaction_handle *th,
 			     GET_GENERATION_NUMBER(le_key_k_offset
 						   (le_key_version(key),
 						    key)) == 1))
-				reiserfs_warning(th->t_super,
-						 "vs-5355: reiserfs_delete_solid_item: %k not found",
-						 key);
+				reiserfs_warning(th->t_super, "vs-5355",
+						 "%k not found", key);
 			break;
 		}
 		if (!tb_init) {
@@ -1389,8 +1386,7 @@ void reiserfs_delete_solid_item(struct reiserfs_transaction_handle *th,
 			break;
 		}
 		// IO_ERROR, NO_DISK_SPACE, etc
-		reiserfs_warning(th->t_super,
-				 "vs-5360: reiserfs_delete_solid_item: "
+		reiserfs_warning(th->t_super, "vs-5360",
 				 "could not delete %K due to fix_nodes failure",
 				 &cpu_key);
 		unfix_nodes(&tb);
@@ -1533,8 +1529,9 @@ static void indirect_to_direct_roll_back(struct reiserfs_transaction_handle *th,
 		set_cpu_key_k_offset(&tail_key,
 				     cpu_key_k_offset(&tail_key) - removed);
 	}
-	reiserfs_warning(inode->i_sb,
-			 "indirect_to_direct_roll_back: indirect_to_direct conversion has been rolled back due to lack of disk space");
+	reiserfs_warning(inode->i_sb, "reiserfs-5091", "indirect_to_direct "
+			 "conversion has been rolled back due to "
+			 "lack of disk space");
 	//mark_file_without_tail (inode);
 	mark_inode_dirty(inode);
 }
@@ -1639,8 +1636,7 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th,
 		if (n_ret_value == POSITION_FOUND)
 			continue;
 
-		reiserfs_warning(p_s_sb,
-				 "PAP-5610: reiserfs_cut_from_item: item %K not found",
+		reiserfs_warning(p_s_sb, "PAP-5610", "item %K not found",
 				 p_s_item_key);
 		unfix_nodes(&s_cut_balance);
 		return (n_ret_value == IO_ERROR) ? -EIO : -ENOENT;
@@ -1654,7 +1650,8 @@ int reiserfs_cut_from_item(struct reiserfs_transaction_handle *th,
 			indirect_to_direct_roll_back(th, p_s_inode, p_s_path);
 		}
 		if (n_ret_value == NO_DISK_SPACE)
-			reiserfs_warning(p_s_sb, "NO_DISK_SPACE");
+			reiserfs_warning(p_s_sb, "reiserfs-5092",
+					 "NO_DISK_SPACE");
 		unfix_nodes(&s_cut_balance);
 		return -EIO;
 	}
@@ -1743,8 +1740,7 @@ static void truncate_directory(struct reiserfs_transaction_handle *th,
 {
 	BUG_ON(!th->t_trans_id);
 	if (inode->i_nlink)
-		reiserfs_warning(inode->i_sb,
-				 "vs-5655: truncate_directory: link count != 0");
+		reiserfs_warning(inode->i_sb, "vs-5655", "link count != 0");
 
 	set_le_key_k_offset(KEY_FORMAT_3_5, INODE_PKEY(inode), DOT_OFFSET);
 	set_le_key_k_type(KEY_FORMAT_3_5, INODE_PKEY(inode), TYPE_DIRENTRY);
@@ -1797,16 +1793,14 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, struct inode *p
 	    search_for_position_by_key(p_s_inode->i_sb, &s_item_key,
 				       &s_search_path);
 	if (retval == IO_ERROR) {
-		reiserfs_warning(p_s_inode->i_sb,
-				 "vs-5657: reiserfs_do_truncate: "
+		reiserfs_warning(p_s_inode->i_sb, "vs-5657",
 				 "i/o failure occurred trying to truncate %K",
 				 &s_item_key);
 		err = -EIO;
 		goto out;
 	}
 	if (retval == POSITION_FOUND || retval == FILE_NOT_FOUND) {
-		reiserfs_warning(p_s_inode->i_sb,
-				 "PAP-5660: reiserfs_do_truncate: "
+		reiserfs_warning(p_s_inode->i_sb, "PAP-5660",
 				 "wrong result %d of search for %K", retval,
 				 &s_item_key);
 
@@ -1850,8 +1844,8 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, struct inode *p
 		    reiserfs_cut_from_item(th, &s_search_path, &s_item_key,
 					   p_s_inode, page, n_new_file_size);
 		if (n_deleted < 0) {
-			reiserfs_warning(p_s_inode->i_sb,
-					 "vs-5665: reiserfs_do_truncate: reiserfs_cut_from_item failed");
+			reiserfs_warning(p_s_inode->i_sb, "vs-5665",
+					 "reiserfs_cut_from_item failed");
 			reiserfs_check_path(&s_search_path);
 			return 0;
 		}
@@ -2000,8 +1994,8 @@ int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th, struct tree
 			goto error_out;
 		}
 		if (retval == POSITION_FOUND) {
-			reiserfs_warning(inode->i_sb,
-					 "PAP-5710: reiserfs_paste_into_item: entry or pasted byte (%K) exists",
+			reiserfs_warning(inode->i_sb, "PAP-5710",
+					 "entry or pasted byte (%K) exists",
 					 p_s_key);
 			retval = -EEXIST;
 			goto error_out;
@@ -2087,8 +2081,7 @@ int reiserfs_insert_item(struct reiserfs_transaction_handle *th, struct treepath
 			goto error_out;
 		}
 		if (retval == ITEM_FOUND) {
-			reiserfs_warning(th->t_super,
-					 "PAP-5760: reiserfs_insert_item: "
+			reiserfs_warning(th->t_super, "PAP-5760",
 					 "key %K already exists in the tree",
 					 key);
 			retval = -EEXIST;