btrfs: fix string and comment grammatical issues and typos

Signed-off-by: Nicholas D Steeves <nsteeves@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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

@@ -303,7 +303,7 @@ 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 @@ again:
 		/*
 		 * 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 @@ again:
 		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

@@ -186,7 +186,7 @@ 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)
 
 #define BTRFS_FT_UNKNOWN	0
@@ -1221,7 +1221,7 @@ 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;
@@ -2392,7 +2392,7 @@ 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

@@ -441,7 +441,7 @@ leave:
 }
 
 /*
- * 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) >
@@ -3017,7 +3017,7 @@ retry_root_backup:
 	}
 
 	/*
-	 * 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);
@@ -3245,7 +3245,7 @@ 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);

fs/btrfs/extent-tree.c

@@ -980,7 +980,7 @@ out_free:
  * 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;
@@ -4243,7 +4243,7 @@ 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)
@@ -4911,7 +4911,7 @@ 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
@@ -5516,7 +5516,7 @@ 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,
@@ -5565,7 +5565,7 @@ 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
@@ -5591,7 +5591,7 @@ 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 >=
@@ -5605,8 +5605,8 @@ 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
@@ -5758,7 +5758,7 @@ out_fail:
 
 		/*
 		 * 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
@@ -5780,7 +5780,7 @@ out_fail:
 
 		/*
 		 * 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
@@ -7471,7 +7471,7 @@ loop:
 		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)
@@ -7873,7 +7873,7 @@ 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);
@@ -9317,7 +9317,7 @@ 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;
 

fs/btrfs/extent_io.c

@@ -4591,7 +4591,7 @@ static void btrfs_release_extent_buffer_page(struct extent_buffer *eb)
 		if (mapped)
 			spin_unlock(&page->mapping->private_lock);
 
-		/* One for when we alloced the page */
+		/* One for when we allocated the page */
 		put_page(page);
 	} while (index != 0);
 }
@@ -5751,7 +5751,7 @@ int try_release_extent_buffer(struct page *page)
 	struct extent_buffer *eb;
 
 	/*
-	 * We need to make sure noboody is attaching this page to an eb right
+	 * We need to make sure nobody is attaching this page to an eb right
 	 * now.
 	 */
 	spin_lock(&page->mapping->private_lock);

fs/btrfs/extent_map.c

@@ -62,7 +62,7 @@ struct extent_map *alloc_extent_map(void)
 
 /**
  * free_extent_map - drop reference count of an extent_map
- * @em:		extent map being releasead
+ * @em:		extent map being released
  *
  * Drops the reference out on @em by one and free the structure
  * if the reference count hits zero.

fs/btrfs/file.c

@@ -2024,7 +2024,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 	     BTRFS_I(inode)->last_trans
 	     <= root->fs_info->last_trans_committed)) {
 		/*
-		 * We'v had everything committed since the last time we were
+		 * We've had everything committed since the last time we were
 		 * modified so clear this flag in case it was set for whatever
 		 * reason, it's no longer relevant.
 		 */
@@ -2372,7 +2372,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
 
 	/* Check the aligned pages after the first unaligned page,
 	 * if offset != orig_start, which means the first unaligned page
-	 * including serveral following pages are already in holes,
+	 * including several following pages are already in holes,
 	 * the extra check can be skipped */
 	if (offset == orig_start) {
 		/* after truncate page, check hole again */

fs/btrfs/free-space-cache.c

@@ -1983,7 +1983,7 @@ static bool use_bitmap(struct btrfs_free_space_ctl *ctl,
 		/*
 		 * If this block group has some small extents we don't want to
 		 * use up all of our free slots in the cache with them, we want
-		 * to reserve them to larger extents, however if we have plent
+		 * to reserve them to larger extents, however if we have plenty
 		 * of cache left then go ahead an dadd them, no sense in adding
 		 * the overhead of a bitmap if we don't have to.
 		 */

fs/btrfs/free-space-cache.h

@@ -123,7 +123,7 @@ int btrfs_return_cluster_to_free_space(
 int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
 			   u64 *trimmed, u64 start, u64 end, u64 minlen);
 
-/* Support functions for runnint our sanity tests */
+/* Support functions for running our sanity tests */
 #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
 int test_add_free_space_entry(struct btrfs_block_group_cache *cache,
 			      u64 offset, u64 bytes, bool bitmap);

fs/btrfs/inode.c

@@ -455,7 +455,7 @@ again:
 
 	/*
 	 * skip compression for a small file range(<=blocksize) that
-	 * isn't an inline extent, since it dosen't save disk space at all.
+	 * isn't an inline extent, since it doesn't save disk space at all.
 	 */
 	if (total_compressed <= blocksize &&
 	   (start > 0 || end + 1 < BTRFS_I(inode)->disk_i_size))
@@ -3705,7 +3705,7 @@ cache_index:
 	 * and doesn't have an inode ref with the name "bar" anymore.
 	 *
 	 * Setting last_unlink_trans to last_trans is a pessimistic approach,
-	 * but it guarantees correctness at the expense of ocassional full
+	 * but it guarantees correctness at the expense of occasional full
 	 * transaction commits on fsync if our inode is a directory, or if our
 	 * inode is not a directory, logging its parent unnecessarily.
 	 */
@@ -4961,7 +4961,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr)
 		 * be instantly completed which will give us extents that need
 		 * to be truncated.  If we fail to get an orphan inode down we
 		 * could have left over extents that were never meant to live,
-		 * so we need to garuntee from this point on that everything
+		 * so we need to guarantee from this point on that everything
 		 * will be consistent.
 		 */
 		ret = btrfs_orphan_add(trans, inode);
@@ -5231,7 +5231,7 @@ void btrfs_evict_inode(struct inode *inode)
 		}
 
 		/*
-		 * We can't just steal from the global reserve, we need tomake
+		 * We can't just steal from the global reserve, we need to make
 		 * sure there is room to do it, if not we need to commit and try
 		 * again.
 		 */
@@ -7407,7 +7407,7 @@ static int lock_extent_direct(struct inode *inode, u64 lockstart, u64 lockend,
 				 cached_state);
 		/*
 		 * We're concerned with the entire range that we're going to be
-		 * doing DIO to, so we need to make sure theres no ordered
+		 * doing DIO to, so we need to make sure there's no ordered
 		 * extents in this range.
 		 */
 		ordered = btrfs_lookup_ordered_range(inode, lockstart,
@@ -7569,7 +7569,7 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock,
 	if (current->journal_info) {
 		/*
 		 * Need to pull our outstanding extents and set journal_info to NULL so
-		 * that anything that needs to check if there's a transction doesn't get
+		 * that anything that needs to check if there's a transaction doesn't get
 		 * confused.
 		 */
 		dio_data = current->journal_info;
@@ -7602,7 +7602,7 @@ static int btrfs_get_blocks_direct(struct inode *inode, sector_t iblock,
 	 * decompress it, so there will be buffering required no matter what we
 	 * do, so go ahead and fallback to buffered.
 	 *
-	 * We return -ENOTBLK because thats what makes DIO go ahead and go back
+	 * We return -ENOTBLK because that's what makes DIO go ahead and go back
 	 * to buffered IO.  Don't blame me, this is the price we pay for using
 	 * the generic code.
 	 */
@@ -9018,7 +9018,7 @@ static int btrfs_truncate(struct inode *inode)
 		return ret;
 
 	/*
-	 * Yes ladies and gentelment, this is indeed ugly.  The fact is we have
+	 * Yes ladies and gentlemen, this is indeed ugly.  The fact is we have
 	 * 3 things going on here
 	 *
 	 * 1) We need to reserve space for our orphan item and the space to
@@ -9032,15 +9032,15 @@ static int btrfs_truncate(struct inode *inode)
 	 * space reserved in case it uses space during the truncate (thank you
 	 * very much snapshotting).
 	 *
-	 * And we need these to all be seperate.  The fact is we can use alot of
+	 * And we need these to all be separate.  The fact is we can use a lot of
 	 * space doing the truncate, and we have no earthly idea how much space
-	 * we will use, so we need the truncate reservation to be seperate so it
+	 * we will use, so we need the truncate reservation to be separate so it
 	 * doesn't end up using space reserved for updating the inode or
 	 * removing the orphan item.  We also need to be able to stop the
 	 * transaction and start a new one, which means we need to be able to
 	 * update the inode several times, and we have no idea of knowing how
 	 * many times that will be, so we can't just reserve 1 item for the
-	 * entirety of the opration, so that has to be done seperately as well.
+	 * entirety of the operation, so that has to be done separately as well.
 	 * Then there is the orphan item, which does indeed need to be held on
 	 * to for the whole operation, and we need nobody to touch this reserved
 	 * space except the orphan code.

fs/btrfs/ioctl.c

@@ -296,7 +296,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
 		}
 	} else {
 		/*
-		 * Revert back under same assuptions as above
+		 * Revert back under same assumptions as above
 		 */
 		if (S_ISREG(mode)) {
 			if (inode->i_size == 0)
@@ -461,7 +461,7 @@ static noinline int create_subvol(struct inode *dir,
 
 	/*
 	 * Don't create subvolume whose level is not zero. Or qgroup will be
-	 * screwed up since it assume subvolme qgroup's level to be 0.
+	 * screwed up since it assumes subvolume qgroup's level to be 0.
 	 */
 	if (btrfs_qgroup_level(objectid))
 		return -ENOSPC;
@@ -771,7 +771,7 @@ free_pending:
  *	a. be owner of dir, or
  *	b. be owner of victim, or
  *	c. have CAP_FOWNER capability
- *  6. If the victim is append-only or immutable we can't do antyhing with
+ *  6. If the victim is append-only or immutable we can't do anything with
  *     links pointing to it.
  *  7. If we were asked to remove a directory and victim isn't one - ENOTDIR.
  *  8. If we were asked to remove a non-directory and victim isn't one - EISDIR.
@@ -4585,7 +4585,7 @@ again:
 	}
 
 	/*
-	 * mut. excl. ops lock is locked.  Three possibilites:
+	 * mut. excl. ops lock is locked.  Three possibilities:
 	 *   (1) some other op is running
 	 *   (2) balance is running
 	 *   (3) balance is paused -- special case (think resume)
@@ -5490,7 +5490,7 @@ long btrfs_ioctl(struct file *file, unsigned int
 		ret = btrfs_sync_fs(file_inode(file)->i_sb, 1);
 		/*
 		 * The transaction thread may want to do more work,
-		 * namely it pokes the cleaner ktread that will start
+		 * namely it pokes the cleaner kthread that will start
 		 * processing uncleaned subvols.
 		 */
 		wake_up_process(root->fs_info->transaction_kthread);

fs/btrfs/ordered-data.h

@@ -58,7 +58,7 @@ struct btrfs_ordered_sum {
 
 #define BTRFS_ORDERED_COMPRESSED 3 /* writing a zlib compressed extent */
 
-#define BTRFS_ORDERED_PREALLOC 4 /* set when writing to prealloced extent */
+#define BTRFS_ORDERED_PREALLOC 4 /* set when writing to preallocated extent */
 
 #define BTRFS_ORDERED_DIRECT 5 /* set when we're doing DIO with this extent */
 

fs/btrfs/qgroup.c

@@ -85,7 +85,7 @@ struct btrfs_qgroup {
 
 	/*
 	 * temp variables for accounting operations
-	 * Refer to qgroup_shared_accouting() for details.
+	 * Refer to qgroup_shared_accounting() for details.
 	 */
 	u64 old_refcnt;
 	u64 new_refcnt;
@@ -499,7 +499,7 @@ void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info)
 	}
 	/*
 	 * we call btrfs_free_qgroup_config() when umounting
-	 * filesystem and disabling quota, so we set qgroup_ulit
+	 * filesystem and disabling quota, so we set qgroup_ulist
 	 * to be null here to avoid double free.
 	 */
 	ulist_free(fs_info->qgroup_ulist);
@@ -1036,7 +1036,7 @@ static void qgroup_dirty(struct btrfs_fs_info *fs_info,
 
 /*
  * The easy accounting, if we are adding/removing the only ref for an extent
- * then this qgroup and all of the parent qgroups get their refrence and
+ * then this qgroup and all of the parent qgroups get their reference and
  * exclusive counts adjusted.
  *
  * Caller should hold fs_info->qgroup_lock.
@@ -1436,7 +1436,7 @@ int btrfs_qgroup_prepare_account_extents(struct btrfs_trans_handle *trans,
 
 	/*
 	 * No need to do lock, since this function will only be called in
-	 * btrfs_commmit_transaction().
+	 * btrfs_commit_transaction().
 	 */
 	node = rb_first(&delayed_refs->dirty_extent_root);
 	while (node) {
@@ -1557,7 +1557,7 @@ static int qgroup_update_refcnt(struct btrfs_fs_info *fs_info,
  * A:	cur_old_roots < nr_old_roots	(not exclusive before)
  * !A:	cur_old_roots == nr_old_roots	(possible exclusive before)
  * B:	cur_new_roots < nr_new_roots	(not exclusive now)
- * !B:	cur_new_roots == nr_new_roots	(possible exclsuive now)
+ * !B:	cur_new_roots == nr_new_roots	(possible exclusive now)
  *
  * Results:
  * +: Possible sharing -> exclusive	-: Possible exclusive -> sharing
@@ -1851,7 +1851,7 @@ out:
 }
 
 /*
- * Copy the acounting information between qgroups. This is necessary
+ * Copy the accounting information between qgroups. This is necessary
  * when a snapshot or a subvolume is created. Throwing an error will
  * cause a transaction abort so we take extra care here to only error
  * when a readonly fs is a reasonable outcome.
@@ -2340,7 +2340,7 @@ out:
 	mutex_unlock(&fs_info->qgroup_rescan_lock);
 
 	/*
-	 * only update status, since the previous part has alreay updated the
+	 * only update status, since the previous part has already updated the
 	 * qgroup info.
 	 */
 	trans = btrfs_start_transaction(fs_info->quota_root, 1);
@@ -2670,7 +2670,7 @@ void btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes)
 }
 
 /*
- * Check qgroup reserved space leaking, normally at destory inode
+ * Check qgroup reserved space leaking, normally at destroy inode
  * time
  */
 void btrfs_qgroup_check_reserved_leak(struct inode *inode)

fs/btrfs/raid56.c

@@ -576,7 +576,7 @@ static int rbio_can_merge(struct btrfs_raid_bio *last,
 	 * we can't merge with cached rbios, since the
 	 * idea is that when we merge the destination
 	 * rbio is going to run our IO for us.  We can
-	 * steal from cached rbio's though, other functions
+	 * steal from cached rbios though, other functions
 	 * handle that.
 	 */
 	if (test_bit(RBIO_CACHE_BIT, &last->flags) ||
@@ -2368,7 +2368,7 @@ static noinline void finish_parity_scrub(struct btrfs_raid_bio *rbio,
 			run_xor(pointers + 1, nr_data - 1, PAGE_SIZE);
 		}
 
-		/* Check scrubbing pairty and repair it */
+		/* Check scrubbing parity and repair it */
 		p = rbio_stripe_page(rbio, rbio->scrubp, pagenr);
 		parity = kmap(p);
 		if (memcmp(parity, pointers[rbio->scrubp], PAGE_SIZE))
@@ -2493,7 +2493,7 @@ static void validate_rbio_for_parity_scrub(struct btrfs_raid_bio *rbio)
 		/*
 		 * Here means we got one corrupted data stripe and one
 		 * corrupted parity on RAID6, if the corrupted parity
-		 * is scrubbing parity, luckly, use the other one to repair
+		 * is scrubbing parity, luckily, use the other one to repair
 		 * the data, or we can not repair the data stripe.
 		 */
 		if (failp != rbio->scrubp)

fs/btrfs/relocation.c

@@ -668,8 +668,8 @@ int find_inline_backref(struct extent_buffer *leaf, int slot,
  * roots of b-trees that reference the tree block.
  *
  * the basic idea of this function is check backrefs of a given block
- * to find upper level blocks that refernece the block, and then check
- * bakcrefs of these upper level blocks recursively. the recursion stop
+ * to find upper level blocks that reference the block, and then check
+ * backrefs of these upper level blocks recursively. the recursion stop
  * when tree root is reached or backrefs for the block is cached.
  *
  * NOTE: if we find backrefs for a block are cached, we know backrefs
@@ -1160,7 +1160,7 @@ out:
 			if (!RB_EMPTY_NODE(&upper->rb_node))
 				continue;
 
-			/* Add this guy's upper edges to the list to proces */
+			/* Add this guy's upper edges to the list to process */
 			list_for_each_entry(edge, &upper->upper, list[LOWER])
 				list_add_tail(&edge->list[UPPER], &list);
 			if (list_empty(&upper->upper))
@@ -2396,7 +2396,7 @@ again:
 		}
 
 		/*
-		 * we keep the old last snapshod transid in rtranid when we
+		 * we keep the old last snapshot transid in rtranid when we
 		 * created the relocation tree.
 		 */
 		last_snap = btrfs_root_rtransid(&reloc_root->root_item);
@@ -2616,7 +2616,7 @@ static int reserve_metadata_space(struct btrfs_trans_handle *trans,
 			 * only one thread can access block_rsv at this point,
 			 * so we don't need hold lock to protect block_rsv.
 			 * we expand more reservation size here to allow enough
-			 * space for relocation and we will return eailer in
+			 * space for relocation and we will return earlier in
 			 * enospc case.
 			 */
 			rc->block_rsv->size = tmp + rc->extent_root->nodesize *
@@ -4591,7 +4591,7 @@ int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans,
 
 /*
  * called before creating snapshot. it calculates metadata reservation
- * requried for relocating tree blocks in the snapshot
+ * required for relocating tree blocks in the snapshot
  */
 void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending,
 			      u64 *bytes_to_reserve)

fs/btrfs/root-tree.c

@@ -71,9 +71,9 @@ static void btrfs_read_root_item(struct extent_buffer *eb, int slot,
  * search_key: the key to search
  * path: the path we search
  * root_item: the root item of the tree we look for
- * root_key: the reak key of the tree we look for
+ * root_key: the root key of the tree we look for
  *
- * If ->offset of 'seach_key' is -1ULL, it means we are not sure the offset
+ * If ->offset of 'search_key' is -1ULL, it means we are not sure the offset
  * of the search key, just lookup the root with the highest offset for a
  * given objectid.
  *

fs/btrfs/scrub.c

@@ -1044,7 +1044,7 @@ nodatasum_case:
 
 		/*
 		 * !is_metadata and !have_csum, this means that the data
-		 * might not be COW'ed, that it might be modified
+		 * might not be COWed, that it might be modified
 		 * concurrently. The general strategy to work on the
 		 * commit root does not help in the case when COW is not
 		 * used.
@@ -1125,7 +1125,7 @@ nodatasum_case:
 	 * the 2nd page of mirror #1 faces I/O errors, and the 2nd page
 	 * of mirror #2 is readable but the final checksum test fails,
 	 * then the 2nd page of mirror #3 could be tried, whether now
-	 * the final checksum succeedes. But this would be a rare
+	 * the final checksum succeeds. But this would be a rare
 	 * exception and is therefore not implemented. At least it is
 	 * avoided that the good copy is overwritten.
 	 * A more useful improvement would be to pick the sectors

fs/btrfs/send.c

@@ -1831,7 +1831,7 @@ static int will_overwrite_ref(struct send_ctx *sctx, u64 dir, u64 dir_gen,
 
 	/*
 	 * If we have a parent root we need to verify that the parent dir was
-	 * not delted and then re-created, if it was then we have no overwrite
+	 * not deleted and then re-created, if it was then we have no overwrite
 	 * and we can just unlink this entry.
 	 */
 	if (sctx->parent_root) {
@@ -4192,9 +4192,9 @@ static int __process_new_xattr(int num, struct btrfs_key *di_key,
 		return -ENOMEM;
 
 	/*
-	 * This hack is needed because empty acl's are stored as zero byte
+	 * This hack is needed because empty acls are stored as zero byte
 	 * data in xattrs. Problem with that is, that receiving these zero byte
-	 * acl's will fail later. To fix this, we send a dummy acl list that
+	 * acls will fail later. To fix this, we send a dummy acl list that
 	 * only contains the version number and no entries.
 	 */
 	if (!strncmp(name, XATTR_NAME_POSIX_ACL_ACCESS, name_len) ||

fs/btrfs/struct-funcs.c

@@ -36,7 +36,7 @@ static inline void put_unaligned_le8(u8 val, void *p)
  *
  * The end result is that anyone who #includes ctree.h gets a
  * declaration for the btrfs_set_foo functions and btrfs_foo functions,
- * which are wappers of btrfs_set_token_#bits functions and
+ * which are wrappers of btrfs_set_token_#bits functions and
  * btrfs_get_token_#bits functions, which are defined in this file.
  *
  * These setget functions do all the extent_buffer related mapping

fs/btrfs/super.c

@@ -121,7 +121,7 @@ static void btrfs_handle_error(struct btrfs_fs_info *fs_info)
 		 * Note that a running device replace operation is not
 		 * canceled here although there is no way to update
 		 * the progress. It would add the risk of a deadlock,
-		 * therefore the canceling is ommited. The only penalty
+		 * therefore the canceling is omitted. The only penalty
 		 * is that some I/O remains active until the procedure
 		 * completes. The next time when the filesystem is
 		 * mounted writeable again, the device replace
@@ -1881,7 +1881,7 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
 	int ret;
 
 	/*
-	 * We aren't under the device list lock, so this is racey-ish, but good
+	 * We aren't under the device list lock, so this is racy-ish, but good
 	 * enough for our purposes.
 	 */
 	nr_devices = fs_info->fs_devices->open_devices;
@@ -1900,7 +1900,7 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
 	if (!devices_info)
 		return -ENOMEM;
 
-	/* calc min stripe number for data space alloction */
+	/* calc min stripe number for data space allocation */
 	type = btrfs_get_alloc_profile(root, 1);
 	if (type & BTRFS_BLOCK_GROUP_RAID0) {
 		min_stripes = 2;
@@ -1936,7 +1936,7 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
 		avail_space *= BTRFS_STRIPE_LEN;
 
 		/*
-		 * In order to avoid overwritting the superblock on the drive,
+		 * In order to avoid overwriting the superblock on the drive,
 		 * btrfs starts at an offset of at least 1MB when doing chunk
 		 * allocation.
 		 */

fs/btrfs/tests/extent-io-tests.c

@@ -176,7 +176,7 @@ static int test_find_delalloc(void)
 	locked_page = find_lock_page(inode->i_mapping, test_start >>
 				     PAGE_SHIFT);
 	if (!locked_page) {
-		test_msg("Could'nt find the locked page\n");
+		test_msg("Couldn't find the locked page\n");
 		goto out_bits;
 	}
 	start = test_start;

fs/btrfs/tests/free-space-tests.c

@@ -25,7 +25,7 @@
 #define BITS_PER_BITMAP		(PAGE_SIZE * 8)
 
 /*
- * This test just does basic sanity checking, making sure we can add an exten
+ * This test just does basic sanity checking, making sure we can add an extent
  * entry and remove space from either end and the middle, and make sure we can
  * remove space that covers adjacent extent entries.
  */
@@ -396,8 +396,9 @@ static int check_cache_empty(struct btrfs_block_group_cache *cache)
  * wasn't optimal as they could be spread all over the block group while under
  * concurrency (extra overhead and fragmentation).
  *
- * This stealing approach is benefical, since we always prefer to allocate from
- * extent entries, both for clustered and non-clustered allocation requests.
+ * This stealing approach is beneficial, since we always prefer to allocate
+ * from extent entries, both for clustered and non-clustered allocation
+ * requests.
  */
 static int
 test_steal_space_from_bitmap_to_extent(struct btrfs_block_group_cache *cache)

fs/btrfs/tests/inode-tests.c

@@ -264,7 +264,7 @@ static noinline int test_btrfs_get_extent(void)
 
 	/*
 	 * We will just free a dummy node if it's ref count is 2 so we need an
-	 * extra ref so our searches don't accidently release our page.
+	 * extra ref so our searches don't accidentally release our page.
 	 */
 	extent_buffer_get(root->node);
 	btrfs_set_header_nritems(root->node, 0);

fs/btrfs/tests/qgroup-tests.c

@@ -234,7 +234,7 @@ static int test_no_shared_qgroup(struct btrfs_root *root)
 	}
 
 	/*
-	 * Since the test trans doesn't havee the complicated delayed refs,
+	 * Since the test trans doesn't have the complicated delayed refs,
 	 * we can only call btrfs_qgroup_account_extent() directly to test
 	 * quota.
 	 */

fs/btrfs/transaction.h

@@ -144,7 +144,7 @@ struct btrfs_pending_snapshot {
 	/* block reservation for the operation */
 	struct btrfs_block_rsv block_rsv;
 	u64 qgroup_reserved;
-	/* extra metadata reseration for relocation */
+	/* extra metadata reservation for relocation */
 	int error;
 	bool readonly;
 	struct list_head list;

fs/btrfs/tree-log.c

@@ -2330,7 +2330,7 @@ static int replay_one_buffer(struct btrfs_root *log, struct extent_buffer *eb,
 				break;
 
 			/* for regular files, make sure corresponding
-			 * orhpan item exist. extents past the new EOF
+			 * orphan item exist. extents past the new EOF
 			 * will be truncated later by orphan cleanup.
 			 */
 			if (S_ISREG(mode)) {
@@ -4937,7 +4937,7 @@ out_unlock:
  * the actual unlink operation, so if we do this check before a concurrent task
  * sets last_unlink_trans it means we've logged a consistent version/state of
  * all the inode items, otherwise we are not sure and must do a transaction
- * commit (the concurrent task migth have only updated last_unlink_trans before
+ * commit (the concurrent task might have only updated last_unlink_trans before
  * we logged the inode or it might have also done the unlink).
  */
 static bool btrfs_must_commit_transaction(struct btrfs_trans_handle *trans,
@@ -4996,7 +4996,7 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans,
 	while (1) {
 		/*
 		 * If we are logging a directory then we start with our inode,
-		 * not our parents inode, so we need to skipp setting the
+		 * not our parent's inode, so we need to skip setting the
 		 * logged_trans so that further down in the log code we don't
 		 * think this inode has already been logged.
 		 */
@@ -5375,7 +5375,7 @@ static int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
 		log_dentries = true;
 
 	/*
-	 * On unlink we must make sure all our current and old parent directores
+	 * On unlink we must make sure all our current and old parent directory
 	 * inodes are fully logged. This is to prevent leaving dangling
 	 * directory index entries in directories that were our parents but are
 	 * not anymore. Not doing this results in old parent directory being

fs/btrfs/ulist.c

@@ -28,7 +28,7 @@
  * }
  * ulist_free(ulist);
  *
- * This assumes the graph nodes are adressable by u64. This stems from the
+ * This assumes the graph nodes are addressable by u64. This stems from the
  * usage for tree enumeration in btrfs, where the logical addresses are
  * 64 bit.
  *

fs/btrfs/volumes.c

@@ -2165,7 +2165,7 @@ static int btrfs_prepare_sprout(struct btrfs_root *root)
 }
 
 /*
- * strore the expected generation for seed devices in device items.
+ * Store the expected generation for seed devices in device items.
  */
 static int btrfs_finish_sprout(struct btrfs_trans_handle *trans,
 			       struct btrfs_root *root)
@@ -3362,7 +3362,7 @@ static int should_balance_chunk(struct btrfs_root *root,
 	} else if ((bargs->flags & BTRFS_BALANCE_ARGS_LIMIT_RANGE)) {
 		/*
 		 * Same logic as the 'limit' filter; the minimum cannot be
-		 * determined here because we do not have the global informatoin
+		 * determined here because we do not have the global information
 		 * about the count of all chunks that satisfy the filters.
 		 */
 		if (bargs->limit_max == 0)
@@ -6032,7 +6032,7 @@ static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical)
 {
 	atomic_inc(&bbio->error);
 	if (atomic_dec_and_test(&bbio->stripes_pending)) {
-		/* Shoud be the original bio. */
+		/* Should be the original bio. */
 		WARN_ON(bio != bbio->orig_bio);
 
 		btrfs_io_bio(bio)->mirror_num = bbio->mirror_num;
@@ -6516,7 +6516,7 @@ int btrfs_read_sys_array(struct btrfs_root *root)
 	set_extent_buffer_uptodate(sb);
 	btrfs_set_buffer_lockdep_class(root->root_key.objectid, sb, 0);
 	/*
-	 * The sb extent buffer is artifical and just used to read the system array.
+	 * The sb extent buffer is artificial and just used to read the system array.
 	 * set_extent_buffer_uptodate() call does not properly mark all it's
 	 * pages up-to-date when the page is larger: extent does not cover the
 	 * whole page and consequently check_page_uptodate does not find all