Merge branch 'cleanups-4.7' into for-chris-4.7-20160525

Author: kdave

fs/btrfs/backref.c

@@ -1939,7 +1939,7 @@ static int inode_to_path(u64 inum, u32 name_len, unsigned long name_off,
  * from ipath->fspath->val[i].
  * when it returns, there are ipath->fspath->elem_cnt number of paths available
  * in ipath->fspath->val[]. when the allocated space wasn't sufficient, the
- * number of missed paths in recored in ipath->fspath->elem_missed, otherwise,
+ * number of missed paths is recorded in ipath->fspath->elem_missed, otherwise,
  * it's zero. ipath->fspath->bytes_missing holds the number of bytes that would
  * have been needed to return all paths.
  */

fs/btrfs/btrfs_inode.h

@@ -313,7 +313,7 @@ struct btrfs_dio_private {
 	struct bio *dio_bio;
 
 	/*
-	 * The original bio may be splited to several sub-bios, this is
+	 * The original bio may be split to several sub-bios, this is
 	 * done during endio of sub-bios
 	 */
 	int (*subio_endio)(struct inode *, struct btrfs_io_bio *, int);

fs/btrfs/check-integrity.c

@@ -1939,7 +1939,7 @@ static void btrfsic_process_written_block(struct btrfsic_dev_state *dev_state,
 		/*
 		 * Clear all references of this block. Do not free
 		 * the block itself even if is not referenced anymore
-		 * because it still carries valueable information
+		 * because it still carries valuable information
 		 * like whether it was ever written and IO completed.
 		 */
 		list_for_each_entry_safe(l, tmp, &block->ref_to_list,

fs/btrfs/ctree.c

@@ -156,7 +156,7 @@ struct extent_buffer *btrfs_root_node(struct btrfs_root *root)
 
 		/*
 		 * RCU really hurts here, we could free up the root node because
-		 * it was cow'ed but we may not get the new root node yet so do
+		 * it was COWed but we may not get the new root node yet so do
 		 * the inc_not_zero dance and if it doesn't work then
 		 * synchronize_rcu and try again.
 		 */
@@ -955,7 +955,7 @@ int btrfs_block_can_be_shared(struct btrfs_root *root,
 			      struct extent_buffer *buf)
 {
 	/*
-	 * Tree blocks not in refernece counted trees and tree roots
+	 * Tree blocks not in reference counted trees and tree roots
 	 * are never shared. If a block was allocated after the last
 	 * snapshot and the block was not allocated by tree relocation,
 	 * we know the block is not shared.
@@ -1270,7 +1270,7 @@ __tree_mod_log_oldest_root(struct btrfs_fs_info *fs_info,
 
 /*
  * tm is a pointer to the first operation to rewind within eb. then, all
- * previous operations will be rewinded (until we reach something older than
+ * previous operations will be rewound (until we reach something older than
  * time_seq).
  */
 static void
@@ -1345,7 +1345,7 @@ __tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb,
 }
 
 /*
- * Called with eb read locked. If the buffer cannot be rewinded, the same buffer
+ * Called with eb read locked. If the buffer cannot be rewound, the same buffer
  * is returned. If rewind operations happen, a fresh buffer is returned. The
  * returned buffer is always read-locked. If the returned buffer is not the
  * input buffer, the lock on the input buffer is released and the input buffer
@@ -1516,7 +1516,7 @@ static inline int should_cow_block(struct btrfs_trans_handle *trans,
 	 * 3) the root is not forced COW.
 	 *
 	 * What is forced COW:
-	 *    when we create snapshot during commiting the transaction,
+	 *    when we create snapshot during committing the transaction,
 	 *    after we've finished coping src root, we must COW the shared
 	 *    block to ensure the metadata consistency.
 	 */
@@ -1531,7 +1531,7 @@ static inline int should_cow_block(struct btrfs_trans_handle *trans,
 
 /*
  * cows a single block, see __btrfs_cow_block for the real work.
- * This version of it has extra checks so that a block isn't cow'd more than
+ * This version of it has extra checks so that a block isn't COWed more than
  * once per transaction, as long as it hasn't been written yet
  */
 noinline int btrfs_cow_block(struct btrfs_trans_handle *trans,
@@ -2986,7 +2986,7 @@ int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key,
 		btrfs_unlock_up_safe(p, level + 1);
 
 		/*
-		 * Since we can unwind eb's we want to do a real search every
+		 * Since we can unwind ebs we want to do a real search every
 		 * time.
 		 */
 		prev_cmp = -1;

fs/btrfs/ctree.h

@@ -89,7 +89,7 @@ static const int btrfs_csum_sizes[] = { 4 };
 /* four bytes for CRC32 */
 #define BTRFS_EMPTY_DIR_SIZE 0
 
-/* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */
+/* specific to btrfs_map_block(), therefore not in include/linux/blk_types.h */
 #define REQ_GET_READ_MIRRORS	(1 << 30)
 
 /* ioprio of readahead is set to idle */
@@ -431,7 +431,7 @@ struct btrfs_space_info {
 	 * bytes_pinned does not reflect the bytes that will be pinned once the
 	 * delayed refs are flushed, so this counter is inc'ed every time we
 	 * call btrfs_free_extent so it is a realtime count of what will be
-	 * freed once the transaction is committed.  It will be zero'ed every
+	 * freed once the transaction is committed.  It will be zeroed every
 	 * time the transaction commits.
 	 */
 	struct percpu_counter total_bytes_pinned;
@@ -1401,7 +1401,7 @@ static inline void btrfs_init_map_token (struct btrfs_map_token *token)
 	token->kaddr = NULL;
 }
 
-/* some macros to generate set/get funcs for the struct fields.  This
+/* some macros to generate set/get functions for the struct fields.  This
  * assumes there is a lefoo_to_cpu for every type, so lets make a simple
  * one for u8:
  */

fs/btrfs/delayed-ref.h

@@ -188,7 +188,7 @@ struct btrfs_delayed_ref_root {
 
 	/*
 	 * To make qgroup to skip given root.
-	 * This is for snapshot, as btrfs_qgroup_inherit() will manully
+	 * This is for snapshot, as btrfs_qgroup_inherit() will manually
 	 * modify counters for snapshot and its source, so we should skip
 	 * the snapshot in new_root/old_roots or it will get calculated twice
 	 */

fs/btrfs/dev-replace.c

@@ -450,7 +450,7 @@ int btrfs_dev_replace_by_ioctl(struct btrfs_root *root,
 }
 
 /*
- * blocked until all flighting bios are finished.
+ * blocked until all in-flight bios operations are finished.
  */
 static void btrfs_rm_dev_replace_blocked(struct btrfs_fs_info *fs_info)
 {

fs/btrfs/disk-io.c

@@ -384,7 +384,7 @@ static int verify_parent_transid(struct extent_io_tree *io_tree,
 	/*
 	 * Things reading via commit roots that don't have normal protection,
 	 * like send, can have a really old block in cache that may point at a
-	 * block that has been free'd and re-allocated.  So don't clear uptodate
+	 * block that has been freed and re-allocated.  So don't clear uptodate
 	 * if we find an eb that is under IO (dirty/writeback) because we could
 	 * end up reading in the stale data and then writing it back out and
 	 * making everybody very sad.
@@ -418,7 +418,7 @@ static int btrfs_check_super_csum(char *raw_disk_sb)
 		/*
 		 * The super_block structure does not span the whole
 		 * BTRFS_SUPER_INFO_SIZE range, we expect that the unused space
-		 * is filled with zeros and is included in the checkum.
+		 * is filled with zeros and is included in the checksum.
 		 */
 		crc = btrfs_csum_data(raw_disk_sb + BTRFS_CSUM_SIZE,
 				crc, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
@@ -600,7 +600,7 @@ static noinline int check_leaf(struct btrfs_root *root,
 
 		/*
 		 * Check to make sure that we don't point outside of the leaf,
-		 * just incase all the items are consistent to eachother, but
+		 * just in case all the items are consistent to each other, but
 		 * all point outside of the leaf.
 		 */
 		if (btrfs_item_end_nr(leaf, slot) >
@@ -3022,7 +3022,7 @@ int open_ctree(struct super_block *sb,
 	}
 
 	/*
-	 * Mount does not set all options immediatelly, we can do it now and do
+	 * Mount does not set all options immediately, we can do it now and do
 	 * not have to wait for transaction commit
 	 */
 	btrfs_apply_pending_changes(fs_info);
@@ -3255,7 +3255,7 @@ static void btrfs_end_buffer_write_sync(struct buffer_head *bh, int uptodate)
 		btrfs_warn_rl_in_rcu(device->dev_root->fs_info,
 				"lost page write due to IO error on %s",
 					  rcu_str_deref(device->name));
-		/* note, we dont' set_buffer_write_io_error because we have
+		/* note, we don't set_buffer_write_io_error because we have
 		 * our own ways of dealing with the IO errors
 		 */
 		clear_buffer_uptodate(bh);
@@ -4367,7 +4367,7 @@ static int btrfs_destroy_marked_extents(struct btrfs_root *root,
 		if (ret)
 			break;
 
-		clear_extent_bits(dirty_pages, start, end, mark, GFP_NOFS);
+		clear_extent_bits(dirty_pages, start, end, mark);
 		while (start <= end) {
 			eb = btrfs_find_tree_block(root->fs_info, start);
 			start += root->nodesize;
@@ -4402,7 +4402,7 @@ static int btrfs_destroy_pinned_extent(struct btrfs_root *root,
 		if (ret)
 			break;
 
-		clear_extent_dirty(unpin, start, end, GFP_NOFS);
+		clear_extent_dirty(unpin, start, end);
 		btrfs_error_unpin_extent_range(root, start, end);
 		cond_resched();
 	}

fs/btrfs/extent-tree.c

@@ -231,9 +231,9 @@ static int add_excluded_extent(struct btrfs_root *root,
 {
 	u64 end = start + num_bytes - 1;
 	set_extent_bits(&root->fs_info->freed_extents[0],
-			start, end, EXTENT_UPTODATE, GFP_NOFS);
+			start, end, EXTENT_UPTODATE);
 	set_extent_bits(&root->fs_info->freed_extents[1],
-			start, end, EXTENT_UPTODATE, GFP_NOFS);
+			start, end, EXTENT_UPTODATE);
 	return 0;
 }
 
@@ -246,9 +246,9 @@ static void free_excluded_extents(struct btrfs_root *root,
 	end = start + cache->key.offset - 1;
 
 	clear_extent_bits(&root->fs_info->freed_extents[0],
-			  start, end, EXTENT_UPTODATE, GFP_NOFS);
+			  start, end, EXTENT_UPTODATE);
 	clear_extent_bits(&root->fs_info->freed_extents[1],
-			  start, end, EXTENT_UPTODATE, GFP_NOFS);
+			  start, end, EXTENT_UPTODATE);
 }
 
 static int exclude_super_stripes(struct btrfs_root *root,
@@ -980,7 +980,7 @@ int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
  * event that tree block loses its owner tree's reference and do the
  * back refs conversion.
  *
- * When a tree block is COW'd through a tree, there are four cases:
+ * When a tree block is COWed through a tree, there are four cases:
  *
  * The reference count of the block is one and the tree is the block's
  * owner tree. Nothing to do in this case.
@@ -2595,7 +2595,7 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
 			}
 
 			/*
-			 * Need to drop our head ref lock and re-aqcuire the
+			 * Need to drop our head ref lock and re-acquire the
 			 * delayed ref lock and then re-check to make sure
 			 * nobody got added.
 			 */
@@ -2747,7 +2747,7 @@ static inline u64 heads_to_leaves(struct btrfs_root *root, u64 heads)
 
 	/*
 	 * We don't ever fill up leaves all the way so multiply by 2 just to be
-	 * closer to what we're really going to want to ouse.
+	 * closer to what we're really going to want to use.
 	 */
 	return div_u64(num_bytes, BTRFS_LEAF_DATA_SIZE(root));
 }
@@ -2851,7 +2851,7 @@ static void delayed_ref_async_start(struct btrfs_work *work)
 	}
 
 	/*
-	 * trans->sync means that when we call end_transaciton, we won't
+	 * trans->sync means that when we call end_transaction, we won't
 	 * wait on delayed refs
 	 */
 	trans->sync = true;
@@ -4296,7 +4296,7 @@ void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start,
  * Called if we need to clear a data reservation for this inode
  * Normally in a error case.
  *
- * This one will handle the per-indoe data rsv map for accurate reserved
+ * This one will handle the per-inode data rsv map for accurate reserved
  * space framework.
  */
 void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len)
@@ -4967,7 +4967,7 @@ void btrfs_init_async_reclaim_work(struct work_struct *work)
  * @orig_bytes - the number of bytes we want
  * @flush - whether or not we can flush to make our reservation
  *
- * This will reserve orgi_bytes number of bytes from the space info associated
+ * This will reserve orig_bytes number of bytes from the space info associated
  * with the block_rsv.  If there is not enough space it will make an attempt to
  * flush out space to make room.  It will do this by flushing delalloc if
  * possible or committing the transaction.  If flush is 0 then no attempts to
@@ -5572,7 +5572,7 @@ void btrfs_orphan_release_metadata(struct inode *inode)
  * common file/directory operations, they change two fs/file trees
  * and root tree, the number of items that the qgroup reserves is
  * different with the free space reservation. So we can not use
- * the space reseravtion mechanism in start_transaction().
+ * the space reservation mechanism in start_transaction().
  */
 int btrfs_subvolume_reserve_metadata(struct btrfs_root *root,
 				     struct btrfs_block_rsv *rsv,
@@ -5621,7 +5621,7 @@ void btrfs_subvolume_release_metadata(struct btrfs_root *root,
 /**
  * drop_outstanding_extent - drop an outstanding extent
  * @inode: the inode we're dropping the extent for
- * @num_bytes: the number of bytes we're relaseing.
+ * @num_bytes: the number of bytes we're releasing.
  *
  * This is called when we are freeing up an outstanding extent, either called
  * after an error or after an extent is written.  This will return the number of
@@ -5647,7 +5647,7 @@ static unsigned drop_outstanding_extent(struct inode *inode, u64 num_bytes)
 		drop_inode_space = 1;
 
 	/*
-	 * If we have more or the same amount of outsanding extents than we have
+	 * If we have more or the same amount of outstanding extents than we have
 	 * reserved then we need to leave the reserved extents count alone.
 	 */
 	if (BTRFS_I(inode)->outstanding_extents >=
@@ -5661,8 +5661,8 @@ static unsigned drop_outstanding_extent(struct inode *inode, u64 num_bytes)
 }
 
 /**
- * calc_csum_metadata_size - return the amount of metada space that must be
- *	reserved/free'd for the given bytes.
+ * calc_csum_metadata_size - return the amount of metadata space that must be
+ *	reserved/freed for the given bytes.
  * @inode: the inode we're manipulating
  * @num_bytes: the number of bytes in question
  * @reserve: 1 if we are reserving space, 0 if we are freeing space
@@ -5814,7 +5814,7 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
 
 		/*
 		 * This is tricky, but first we need to figure out how much we
-		 * free'd from any free-ers that occurred during this
+		 * freed from any free-ers that occurred during this
 		 * reservation, so we reset ->csum_bytes to the csum_bytes
 		 * before we dropped our lock, and then call the free for the
 		 * number of bytes that were freed while we were trying our
@@ -5836,7 +5836,7 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
 
 		/*
 		 * Now reset ->csum_bytes to what it should be.  If bytes is
-		 * more than to_free then we would have free'd more space had we
+		 * more than to_free then we would have freed more space had we
 		 * not had an artificially high ->csum_bytes, so we need to free
 		 * the remainder.  If bytes is the same or less then we don't
 		 * need to do anything, the other free-ers did the correct
@@ -6515,7 +6515,7 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
 			ret = btrfs_discard_extent(root, start,
 						   end + 1 - start, NULL);
 
-		clear_extent_dirty(unpin, start, end, GFP_NOFS);
+		clear_extent_dirty(unpin, start, end);
 		unpin_extent_range(root, start, end, true);
 		mutex_unlock(&fs_info->unused_bg_unpin_mutex);
 		cond_resched();
@@ -7578,7 +7578,7 @@ static noinline int find_free_extent(struct btrfs_root *orig_root,
 		if (loop == LOOP_CACHING_NOWAIT) {
 			/*
 			 * We want to skip the LOOP_CACHING_WAIT step if we
-			 * don't have any unached bgs and we've alrelady done a
+			 * don't have any uncached bgs and we've already done a
 			 * full search through.
 			 */
 			if (orig_have_caching_bg || !full_search)
@@ -7982,7 +7982,7 @@ int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans,
 
 	/*
 	 * Mixed block groups will exclude before processing the log so we only
-	 * need to do the exlude dance if this fs isn't mixed.
+	 * need to do the exclude dance if this fs isn't mixed.
 	 */
 	if (!btrfs_fs_incompat(root->fs_info, MIXED_GROUPS)) {
 		ret = __exclude_logged_extent(root, ins->objectid, ins->offset);
@@ -8032,7 +8032,7 @@ btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 					buf->start + buf->len - 1, GFP_NOFS);
 		else
 			set_extent_new(&root->dirty_log_pages, buf->start,
-					buf->start + buf->len - 1, GFP_NOFS);
+					buf->start + buf->len - 1);
 	} else {
 		buf->log_index = -1;
 		set_extent_dirty(&trans->transaction->dirty_pages, buf->start,
@@ -9426,7 +9426,7 @@ u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo)
 	u64 free_bytes = 0;
 	int factor;
 
-	/* It's df, we don't care if it's racey */
+	/* It's df, we don't care if it's racy */
 	if (list_empty(&sinfo->ro_bgs))
 		return 0;
 
@@ -10635,14 +10635,14 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info)
 		 */
 		mutex_lock(&fs_info->unused_bg_unpin_mutex);
 		ret = clear_extent_bits(&fs_info->freed_extents[0], start, end,
-				  EXTENT_DIRTY, GFP_NOFS);
+				  EXTENT_DIRTY);
 		if (ret) {
 			mutex_unlock(&fs_info->unused_bg_unpin_mutex);
 			btrfs_dec_block_group_ro(root, block_group);
 			goto end_trans;
 		}
 		ret = clear_extent_bits(&fs_info->freed_extents[1], start, end,
-				  EXTENT_DIRTY, GFP_NOFS);
+				  EXTENT_DIRTY);
 		if (ret) {
 			mutex_unlock(&fs_info->unused_bg_unpin_mutex);
 			btrfs_dec_block_group_ro(root, block_group);