diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index b5fca8e26..1235074ef 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -62,7 +62,7 @@
  * elements of the cache are therefore exactly the same size.  So
  * when adjusting the cache size following a cache miss, its simply
  * a matter of choosing a single page to evict.  In our model, we
- * have variable sized cache blocks (rangeing from 512 bytes to
+ * have variable sized cache blocks (ranging from 512 bytes to
  * 128K bytes).  We therefore choose a set of blocks to evict to make
  * space for a cache miss that approximates as closely as possible
  * the space used by the new block.
@@ -262,7 +262,7 @@
  * The L1ARC has a slightly different system for storing encrypted data.
  * Raw (encrypted + possibly compressed) data has a few subtle differences from
  * data that is just compressed. The biggest difference is that it is not
- * possible to decrypt encrypted data (or visa versa) if the keys aren't loaded.
+ * possible to decrypt encrypted data (or vice-versa) if the keys aren't loaded.
  * The other difference is that encryption cannot be treated as a suggestion.
  * If a caller would prefer compressed data, but they actually wind up with
  * uncompressed data the worst thing that could happen is there might be a
@@ -2151,7 +2151,7 @@ arc_buf_fill(arc_buf_t *buf, spa_t *spa, const zbookmark_phys_t *zb,
 	}
 
 	/*
-	 * Adjust encrypted and authenticated headers to accomodate
+	 * Adjust encrypted and authenticated headers to accommodate
 	 * the request if needed. Dnode blocks (ARC_FILL_IN_PLACE) are
 	 * allowed to fail decryption due to keys not being loaded
 	 * without being marked as an IO error.
@@ -2220,7 +2220,7 @@ arc_buf_fill(arc_buf_t *buf, spa_t *spa, const zbookmark_phys_t *zb,
 		if (arc_buf_is_shared(buf)) {
 			ASSERT(ARC_BUF_COMPRESSED(buf));
 
-			/* We need to give the buf it's own b_data */
+			/* We need to give the buf its own b_data */
 			buf->b_flags &= ~ARC_BUF_FLAG_SHARED;
 			buf->b_data =
 			    arc_get_data_buf(hdr, HDR_GET_LSIZE(hdr), buf);
@@ -2836,7 +2836,7 @@ arc_can_share(arc_buf_hdr_t *hdr, arc_buf_t *buf)
 	 * sufficient to make this guarantee, however it's possible
 	 * (specifically in the rare L2ARC write race mentioned in
 	 * arc_buf_alloc_impl()) there will be an existing uncompressed buf that
-	 * is sharable, but wasn't at the time of its allocation. Rather than
+	 * is shareable, but wasn't at the time of its allocation. Rather than
 	 * allow a new shared uncompressed buf to be created and then shuffle
 	 * the list around to make it the last element, this simply disallows
 	 * sharing if the new buf isn't the first to be added.
@@ -2895,7 +2895,7 @@ arc_buf_alloc_impl(arc_buf_hdr_t *hdr, spa_t *spa, const zbookmark_phys_t *zb,
 
 	/*
 	 * Only honor requests for compressed bufs if the hdr is actually
-	 * compressed. This must be overriden if the buffer is encrypted since
+	 * compressed. This must be overridden if the buffer is encrypted since
 	 * encrypted buffers cannot be decompressed.
 	 */
 	if (encrypted) {
@@ -3199,7 +3199,7 @@ arc_buf_remove(arc_buf_hdr_t *hdr, arc_buf_t *buf)
 }
 
 /*
- * Free up buf->b_data and pull the arc_buf_t off of the the arc_buf_hdr_t's
+ * Free up buf->b_data and pull the arc_buf_t off of the arc_buf_hdr_t's
  * list and free it.
  */
 static void
@@ -3658,7 +3658,7 @@ arc_hdr_realloc_crypt(arc_buf_hdr_t *hdr, boolean_t need_crypt)
 /*
  * This function is used by the send / receive code to convert a newly
  * allocated arc_buf_t to one that is suitable for a raw encrypted write. It
- * is also used to allow the root objset block to be uupdated without altering
+ * is also used to allow the root objset block to be updated without altering
  * its embedded MACs. Both block types will always be uncompressed so we do not
  * have to worry about compression type or psize.
  */
@@ -6189,7 +6189,7 @@ top:
 
 	/*
 	 * Determine if we have an L1 cache hit or a cache miss. For simplicity
-	 * we maintain encrypted data seperately from compressed / uncompressed
+	 * we maintain encrypted data separately from compressed / uncompressed
 	 * data. If the user is requesting raw encrypted data and we don't have
 	 * that in the header we will read from disk to guarantee that we can
 	 * get it even if the encryption keys aren't loaded.
diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c
index ace862637..c3127ee0e 100644
--- a/module/zfs/dbuf.c
+++ b/module/zfs/dbuf.c
@@ -2337,7 +2337,7 @@ dmu_buf_will_dirty_impl(dmu_buf_t *db_fake, int flags, dmu_tx_t *tx)
 	ASSERT(!zfs_refcount_is_zero(&db->db_holds));
 
 	/*
-	 * Quick check for dirtyness.  For already dirty blocks, this
+	 * Quick check for dirtiness.  For already dirty blocks, this
 	 * reduces runtime of this function by >90%, and overall performance
 	 * by 50% for some workloads (e.g. file deletion with indirect blocks
 	 * cached).
@@ -2892,7 +2892,7 @@ dbuf_create(dnode_t *dn, uint8_t level, uint64_t blkid,
 	 * Hold the dn_dbufs_mtx while we get the new dbuf
 	 * in the hash table *and* added to the dbufs list.
 	 * This prevents a possible deadlock with someone
-	 * trying to look up this dbuf before its added to the
+	 * trying to look up this dbuf before it's added to the
 	 * dn_dbufs list.
 	 */
 	mutex_enter(&dn->dn_dbufs_mtx);
@@ -3337,7 +3337,7 @@ dbuf_hold_impl_arg(struct dbuf_hold_arg *dh)
 	ASSERT(dh->dh_db->db_buf == NULL || arc_referenced(dh->dh_db->db_buf));
 
 	/*
-	 * If this buffer is currently syncing out, and we are are
+	 * If this buffer is currently syncing out, and we are
 	 * still referencing it from db_data, we need to make a copy
 	 * of it in case we decide we want to dirty it again in this txg.
 	 */
@@ -3812,7 +3812,7 @@ dbuf_check_blkptr(dnode_t *dn, dmu_buf_impl_t *db)
 		/*
 		 * This buffer was allocated at a time when there was
 		 * no available blkptrs from the dnode, or it was
-		 * inappropriate to hook it in (i.e., nlevels mis-match).
+		 * inappropriate to hook it in (i.e., nlevels mismatch).
 		 */
 		ASSERT(db->db_blkid < dn->dn_phys->dn_nblkptr);
 		ASSERT(db->db_parent == NULL);
diff --git a/module/zfs/dmu.c b/module/zfs/dmu.c
index aa3ef6458..c7ddbcba7 100644
--- a/module/zfs/dmu.c
+++ b/module/zfs/dmu.c
@@ -639,11 +639,11 @@ dmu_buf_rele_array(dmu_buf_t **dbp_fake, int numbufs, void *tag)
 
 /*
  * Issue prefetch i/os for the given blocks.  If level is greater than 0, the
- * indirect blocks prefeteched will be those that point to the blocks containing
+ * indirect blocks prefetched will be those that point to the blocks containing
  * the data starting at offset, and continuing to offset + len.
  *
  * Note that if the indirect blocks above the blocks being prefetched are not
- * in cache, they will be asychronously read in.
+ * in cache, they will be asynchronously read in.
  */
 void
 dmu_prefetch(objset_t *os, uint64_t object, int64_t level, uint64_t offset,
@@ -2176,7 +2176,7 @@ dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp, zio_prop_t *zp)
 		 * Determine dedup setting.  If we are in dmu_sync(),
 		 * we won't actually dedup now because that's all
 		 * done in syncing context; but we do want to use the
-		 * dedup checkum.  If the checksum is not strong
+		 * dedup checksum.  If the checksum is not strong
 		 * enough to ensure unique signatures, force
 		 * dedup_verify.
 		 */
diff --git a/module/zfs/dmu_objset.c b/module/zfs/dmu_objset.c
index 3afafd182..9350322ff 100644
--- a/module/zfs/dmu_objset.c
+++ b/module/zfs/dmu_objset.c
@@ -1028,7 +1028,7 @@ dmu_objset_create_impl_dnstats(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
 
 	/*
 	 * We don't want to have to increase the meta-dnode's nlevels
-	 * later, because then we could do it in quescing context while
+	 * later, because then we could do it in quiescing context while
 	 * we are also accessing it in open context.
 	 *
 	 * This precaution is not necessary for the MOS (ds == NULL),
@@ -2648,7 +2648,7 @@ dmu_objset_find_dp_cb(void *arg)
 
 	/*
 	 * We need to get a pool_config_lock here, as there are several
-	 * asssert(pool_config_held) down the stack. Getting a lock via
+	 * assert(pool_config_held) down the stack. Getting a lock via
 	 * dsl_pool_config_enter is risky, as it might be stalled by a
 	 * pending writer. This would deadlock, as the write lock can
 	 * only be granted when our parent thread gives up the lock.
diff --git a/module/zfs/dmu_send.c b/module/zfs/dmu_send.c
index 884be31bd..39f6883ff 100644
--- a/module/zfs/dmu_send.c
+++ b/module/zfs/dmu_send.c
@@ -548,7 +548,7 @@ dump_write(dmu_send_cookie_t *dscp, dmu_object_type_t type, uint64_t object,
 		/*
 		 * There's no pre-computed checksum for partial-block writes,
 		 * embedded BP's, or encrypted BP's that are being sent as
-		 * plaintext, so (like fletcher4-checkummed blocks) userland
+		 * plaintext, so (like fletcher4-checksummed blocks) userland
 		 * will have to compute a dedup-capable checksum itself.
 		 */
 		drrw->drr_checksumtype = ZIO_CHECKSUM_OFF;
@@ -2262,7 +2262,7 @@ setup_send_progress(struct dmu_send_params *dspp)
  *
  * The final case is a simple zfs full or incremental send.  The to_ds traversal
  * thread behaves the same as always. The redact list thread is never started.
- * The send merge thread takes all the blocks that the to_ds traveral thread
+ * The send merge thread takes all the blocks that the to_ds traversal thread
  * sends it, prefetches the data, and sends the blocks on to the main thread.
  * The main thread sends the data over the wire.
  *
diff --git a/module/zfs/dmu_zfetch.c b/module/zfs/dmu_zfetch.c
index 6511e4f8e..b99106ae7 100644
--- a/module/zfs/dmu_zfetch.c
+++ b/module/zfs/dmu_zfetch.c
@@ -221,7 +221,7 @@ dmu_zfetch(zfetch_t *zf, uint64_t blkid, uint64_t nblks, boolean_t fetch_data,
 	 * can only read from blocks that we carefully ensure are on
 	 * concrete vdevs (or previously-loaded indirect vdevs).  So we
 	 * can't allow the predictive prefetcher to attempt reads of other
-	 * blocks (e.g. of the MOS's dnode obejct).
+	 * blocks (e.g. of the MOS's dnode object).
 	 */
 	if (!spa_indirect_vdevs_loaded(spa))
 		return;
diff --git a/module/zfs/dnode.c b/module/zfs/dnode.c
index 108bf1714..4ee192ed5 100644
--- a/module/zfs/dnode.c
+++ b/module/zfs/dnode.c
@@ -1787,7 +1787,7 @@ dnode_set_blksz(dnode_t *dn, uint64_t size, int ibs, dmu_tx_t *tx)
 		dn->dn_indblkshift = ibs;
 		dn->dn_next_indblkshift[tx->tx_txg&TXG_MASK] = ibs;
 	}
-	/* rele after we have fixed the blocksize in the dnode */
+	/* release after we have fixed the blocksize in the dnode */
 	if (db)
 		dbuf_rele(db, FTAG);
 
diff --git a/module/zfs/dsl_bookmark.c b/module/zfs/dsl_bookmark.c
index 4da17488c..2126f3d9b 100644
--- a/module/zfs/dsl_bookmark.c
+++ b/module/zfs/dsl_bookmark.c
@@ -88,7 +88,7 @@ dsl_bookmark_lookup_impl(dsl_dataset_t *ds, const char *shortname,
 }
 
 /*
- * If later_ds is non-NULL, this will return EXDEV if the the specified bookmark
+ * If later_ds is non-NULL, this will return EXDEV if the specified bookmark
  * does not represents an earlier point in later_ds's timeline.  However,
  * bmp will still be filled in if we return EXDEV.
  *
diff --git a/module/zfs/dsl_crypt.c b/module/zfs/dsl_crypt.c
index 24711227b..271019e79 100644
--- a/module/zfs/dsl_crypt.c
+++ b/module/zfs/dsl_crypt.c
@@ -227,7 +227,7 @@ dsl_crypto_params_create_nvlist(dcp_cmd_t cmd, nvlist_t *props,
 		goto error;
 	}
 
-	/* if the user asked for the deault crypt, determine that now */
+	/* if the user asked for the default crypt, determine that now */
 	if (dcp->cp_crypt == ZIO_CRYPT_ON)
 		dcp->cp_crypt = ZIO_CRYPT_ON_VALUE;
 
@@ -1596,7 +1596,7 @@ spa_keystore_change_key(const char *dsname, dsl_crypto_params_t *dcp)
 	/*
 	 * Perform the actual work in syncing context. The blocks modified
 	 * here could be calculated but it would require holding the pool
-	 * lock and tarversing all of the datasets that will have their keys
+	 * lock and traversing all of the datasets that will have their keys
 	 * changed.
 	 */
 	return (dsl_sync_task(dsname, spa_keystore_change_key_check,
@@ -1714,7 +1714,7 @@ dsl_dataset_promote_crypt_sync(dsl_dir_t *target, dsl_dir_t *origin,
 		return;
 
 	/*
-	 * If the target is being promoted to the encyrption root update the
+	 * If the target is being promoted to the encryption root update the
 	 * DSL Crypto Key and keylocation to reflect that. We also need to
 	 * update the DSL Crypto Keys of all children inheritting their
 	 * encryption root to point to the new target. Otherwise, the check
diff --git a/module/zfs/dsl_dataset.c b/module/zfs/dsl_dataset.c
index 069a66ecb..8c5e6cb5c 100644
--- a/module/zfs/dsl_dataset.c
+++ b/module/zfs/dsl_dataset.c
@@ -393,7 +393,7 @@ load_zfeature(objset_t *mos, dsl_dataset_t *ds, spa_feature_t f)
 }
 
 /*
- * We have to release the fsid syncronously or we risk that a subsequent
+ * We have to release the fsid synchronously or we risk that a subsequent
  * mount of the same dataset will fail to unique_insert the fsid.  This
  * failure would manifest itself as the fsid of this dataset changing
  * between mounts which makes NFS clients quite unhappy.
@@ -2308,7 +2308,7 @@ get_clones_stat(dsl_dataset_t *ds, nvlist_t *nv)
 	 * We use nvlist_alloc() instead of fnvlist_alloc() because the
 	 * latter would allocate the list with NV_UNIQUE_NAME flag.
 	 * As a result, every time a clone name is appended to the list
-	 * it would be (linearly) searched for for a duplicate name.
+	 * it would be (linearly) searched for a duplicate name.
 	 * We already know that all clone names must be unique and we
 	 * want avoid the quadratic complexity of double-checking that
 	 * because we can have a large number of clones.
@@ -2683,7 +2683,7 @@ dsl_get_mountpoint(dsl_dataset_t *ds, const char *dsname, char *value,
 	int error;
 	dsl_pool_t *dp = ds->ds_dir->dd_pool;
 
-	/* Retrieve the mountpoint value stored in the zap opbject */
+	/* Retrieve the mountpoint value stored in the zap object */
 	error = dsl_prop_get_ds(ds, zfs_prop_to_name(ZFS_PROP_MOUNTPOINT), 1,
 	    ZAP_MAXVALUELEN, value, source);
 	if (error != 0) {
@@ -3961,7 +3961,7 @@ dsl_dataset_clone_swap_check_impl(dsl_dataset_t *clone,
 	 * The clone can't be too much over the head's refquota.
 	 *
 	 * To ensure that the entire refquota can be used, we allow one
-	 * transaction to exceed the the refquota.  Therefore, this check
+	 * transaction to exceed the refquota.  Therefore, this check
 	 * needs to also allow for the space referenced to be more than the
 	 * refquota.  The maximum amount of space that one transaction can use
 	 * on disk is DMU_MAX_ACCESS * spa_asize_inflation.  Allowing this
diff --git a/module/zfs/dsl_destroy.c b/module/zfs/dsl_destroy.c
index 788753bdc..a30018341 100644
--- a/module/zfs/dsl_destroy.c
+++ b/module/zfs/dsl_destroy.c
@@ -667,7 +667,7 @@ dsl_destroy_snapshots_nvl(nvlist_t *snaps, boolean_t defer,
 
 	/*
 	 * lzc_destroy_snaps() is documented to fill the errlist with
-	 * int32 values, so we need to covert the int64 values that are
+	 * int32 values, so we need to convert the int64 values that are
 	 * returned from LUA.
 	 */
 	int rv = 0;
diff --git a/module/zfs/dsl_dir.c b/module/zfs/dsl_dir.c
index 7b3c892c0..373f661a6 100644
--- a/module/zfs/dsl_dir.c
+++ b/module/zfs/dsl_dir.c
@@ -97,7 +97,7 @@
  * limit set. If there is a limit at any initialized level up the tree, the
  * check must pass or the creation will fail. Likewise, when a filesystem or
  * snapshot is destroyed, the counts are recursively adjusted all the way up
- * the initizized nodes in the tree. Renaming a filesystem into different point
+ * the initialized nodes in the tree. Renaming a filesystem into different point
  * in the tree will first validate, then update the counts on each branch up to
  * the common ancestor. A receive will also validate the counts and then update
  * them.
@@ -1467,7 +1467,7 @@ dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx)
  * less than the amount specified.
  *
  * NOTE: The behavior of this function is identical to the Illumos / FreeBSD
- * version however it has been adjusted to use an iterative rather then
+ * version however it has been adjusted to use an iterative rather than
  * recursive algorithm to minimize stack usage.
  */
 void
diff --git a/module/zfs/dsl_scan.c b/module/zfs/dsl_scan.c
index d6956f560..1becd4d55 100644
--- a/module/zfs/dsl_scan.c
+++ b/module/zfs/dsl_scan.c
@@ -1912,7 +1912,7 @@ dsl_scan_visitbp(blkptr_t *bp, const zbookmark_phys_t *zb,
 
 	/*
 	 * This debugging is commented out to conserve stack space.  This
-	 * function is called recursively and the debugging addes several
+	 * function is called recursively and the debugging adds several
 	 * bytes to the stack for each call.  It can be commented back in
 	 * if required to debug an issue in dsl_scan_visitbp().
 	 *
@@ -3373,7 +3373,7 @@ dsl_process_async_destroys(dsl_pool_t *dp, dmu_tx_t *tx)
 /*
  * This is the primary entry point for scans that is called from syncing
  * context. Scans must happen entirely during syncing context so that we
- * cna guarantee that blocks we are currently scanning will not change out
+ * can guarantee that blocks we are currently scanning will not change out
  * from under us. While a scan is active, this function controls how quickly
  * transaction groups proceed, instead of the normal handling provided by
  * txg_sync_thread().
@@ -3977,7 +3977,7 @@ scan_exec_io(dsl_pool_t *dp, const blkptr_t *bp, int zio_flags,
  * As can be seen, at fill_ratio=3, the algorithm is slightly biased towards
  * extents that are more completely filled (in a 3:2 ratio) vs just larger.
  * Note that as an optimization, we replace multiplication and division by
- * 100 with bitshifting by 7 (which effecitvely multiplies and divides by 128).
+ * 100 with bitshifting by 7 (which effectively multiplies and divides by 128).
  */
 static int
 ext_size_compare(const void *x, const void *y)
diff --git a/module/zfs/dsl_synctask.c b/module/zfs/dsl_synctask.c
index b225eed37..2d6ca8549 100644
--- a/module/zfs/dsl_synctask.c
+++ b/module/zfs/dsl_synctask.c
@@ -143,7 +143,7 @@ dsl_sync_task(const char *pool, dsl_checkfunc_t *checkfunc,
  * For that reason, early synctasks can affect the process of writing dirty
  * changes to disk for the txg that they run and should be used with caution.
  * In addition, early synctasks should not dirty any metaslabs as this would
- * invalidate the precodition/invariant for subsequent early synctasks.
+ * invalidate the precondition/invariant for subsequent early synctasks.
  * [see dsl_pool_sync() and dsl_early_sync_task_verify()]
  */
 int
diff --git a/module/zfs/dsl_userhold.c b/module/zfs/dsl_userhold.c
index 638805d0b..2b2182fad 100644
--- a/module/zfs/dsl_userhold.c
+++ b/module/zfs/dsl_userhold.c
@@ -302,7 +302,7 @@ dsl_dataset_user_hold_sync(void *arg, dmu_tx_t *tx)
  * holds is nvl of snapname -> holdname
  * errlist will be filled in with snapname -> error
  *
- * The snaphosts must all be in the same pool.
+ * The snapshots must all be in the same pool.
  *
  * Holds for snapshots that don't exist will be skipped.
  *
@@ -556,9 +556,9 @@ dsl_dataset_user_release_sync(void *arg, dmu_tx_t *tx)
  * errlist will be filled in with snapname -> error
  *
  * If tmpdp is not NULL the names for holds should be the dsobj's of snapshots,
- * otherwise they should be the names of shapshots.
+ * otherwise they should be the names of snapshots.
  *
- * As a release may cause snapshots to be destroyed this trys to ensure they
+ * As a release may cause snapshots to be destroyed this tries to ensure they
  * aren't mounted.
  *
  * The release of non-existent holds are skipped.
diff --git a/module/zfs/fm.c b/module/zfs/fm.c
index 0a0fc79bd..98a844820 100644
--- a/module/zfs/fm.c
+++ b/module/zfs/fm.c
@@ -31,7 +31,7 @@
  * Name-Value Pair Lists
  *
  * The embodiment of an FMA protocol element (event, fmri or authority) is a
- * name-value pair list (nvlist_t).  FMA-specific nvlist construtor and
+ * name-value pair list (nvlist_t).  FMA-specific nvlist constructor and
  * destructor functions, fm_nvlist_create() and fm_nvlist_destroy(), are used
  * to create an nvpair list using custom allocators.  Callers may choose to
  * allocate either from the kernel memory allocator, or from a preallocated
@@ -784,7 +784,7 @@ zfs_zevent_destroy(zfs_zevent_t *ze)
 #endif /* _KERNEL */
 
 /*
- * Wrapppers for FM nvlist allocators
+ * Wrappers for FM nvlist allocators
  */
 /* ARGSUSED */
 static void *
diff --git a/module/zfs/metaslab.c b/module/zfs/metaslab.c
index 11b9ba8e9..1b45e3e33 100644
--- a/module/zfs/metaslab.c
+++ b/module/zfs/metaslab.c
@@ -112,7 +112,7 @@ int zfs_mg_noalloc_threshold = 0;
 
 /*
  * Metaslab groups are considered eligible for allocations if their
- * fragmenation metric (measured as a percentage) is less than or
+ * fragmentation metric (measured as a percentage) is less than or
  * equal to zfs_mg_fragmentation_threshold. If a metaslab group
  * exceeds this threshold then it will be skipped unless all metaslab
  * groups within the metaslab class have also crossed this threshold.
@@ -1285,7 +1285,7 @@ metaslab_largest_unflushed_free(metaslab_t *msp)
 	 * deferred. Similar logic applies to the ms_freed tree. See
 	 * metaslab_load() for more details.
 	 *
-	 * There are two primary sources of innacuracy in this estimate. Both
+	 * There are two primary sources of inaccuracy in this estimate. Both
 	 * are tolerated for performance reasons. The first source is that we
 	 * only check the largest segment for overlaps. Smaller segments may
 	 * have more favorable overlaps with the other trees, resulting in
@@ -1874,7 +1874,7 @@ metaslab_verify_weight_and_frag(metaslab_t *msp)
  * If we're over the zfs_metaslab_mem_limit, select the loaded metaslab from
  * this class that was used longest ago, and attempt to unload it.  We don't
  * want to spend too much time in this loop to prevent performance
- * degredation, and we expect that most of the time this operation will
+ * degradation, and we expect that most of the time this operation will
  * succeed. Between that and the normal unloading processing during txg sync,
  * we expect this to keep the metaslab memory usage under control.
  */
@@ -3060,7 +3060,7 @@ metaslab_passivate(metaslab_t *msp, uint64_t weight)
  * we either fail an allocation attempt (similar to space-based metaslabs)
  * or have exhausted the free space in zfs_metaslab_switch_threshold
  * buckets since the metaslab was activated. This function checks to see
- * if we've exhaused the zfs_metaslab_switch_threshold buckets in the
+ * if we've exhausted the zfs_metaslab_switch_threshold buckets in the
  * metaslab and passivates it proactively. This will allow us to select a
  * metaslab with a larger contiguous region, if any, remaining within this
  * metaslab group. If we're in sync pass > 1, then we continue using this
@@ -4294,7 +4294,7 @@ metaslab_block_alloc(metaslab_t *msp, uint64_t size, uint64_t txg)
  * have selected, we may not try the newly-activated metaslab, and instead
  * activate another metaslab.  This is not optimal, but generally does not cause
  * any problems (a possible exception being if every metaslab is completely full
- * except for the the newly-activated metaslab which we fail to examine).
+ * except for the newly-activated metaslab which we fail to examine).
  */
 static metaslab_t *
 find_valid_metaslab(metaslab_group_t *mg, uint64_t activation_weight,
@@ -4441,7 +4441,7 @@ metaslab_group_alloc_normal(metaslab_group_t *mg, zio_alloc_list_t *zal,
 			/*
 			 * Even though we don't hold the ms_lock for the
 			 * primary metaslab, those fields should not
-			 * change while we hold the mg_lock. Thus is is
+			 * change while we hold the mg_lock. Thus it is
 			 * safe to make assertions on them.
 			 */
 			ASSERT(msp->ms_primary);
@@ -4879,7 +4879,7 @@ top:
 
 		/*
 		 * If we don't need to try hard, then require that the
-		 * block be on an different metaslab from any other DVAs
+		 * block be on a different metaslab from any other DVAs
 		 * in this BP (unique=true).  If we are trying hard, then
 		 * allow any metaslab to be used (unique=false).
 		 */
@@ -5685,7 +5685,7 @@ metaslab_check_free_impl(vdev_t *vd, uint64_t offset, uint64_t size)
 	 *
 	 * It would intuitively make sense to also check the current allocating
 	 * tree since metaslab_unalloc_dva() exists for extents that are
-	 * allocated and freed in the same sync pass withing the same txg.
+	 * allocated and freed in the same sync pass within the same txg.
 	 * Unfortunately there are places (e.g. the ZIL) where we allocate a
 	 * segment but then we free part of it within the same txg
 	 * [see zil_sync()]. Thus, we don't call range_tree_verify() in the
diff --git a/module/zfs/mmp.c b/module/zfs/mmp.c
index 1ffd862da..810d20fdd 100644
--- a/module/zfs/mmp.c
+++ b/module/zfs/mmp.c
@@ -87,12 +87,12 @@
  *
  *    In this case, a weak guarantee is provided.  Since the host which last had
  *    the pool imported will suspend the pool if no mmp writes land within
- *    fail_intervals * multihost_interval ms, the absense of writes during that
+ *    fail_intervals * multihost_interval ms, the absence of writes during that
  *    time means either the pool is not imported, or it is imported but the pool
  *    is suspended and no further writes will occur.
  *
  *    Note that resuming the suspended pool on the remote host would invalidate
- *    this gurantee, and so it is not allowed.
+ *    this guarantee, and so it is not allowed.
  *
  *    The factor of 2 provides a conservative safety factor and derives from
  *    MMP_IMPORT_SAFETY_FACTOR;
diff --git a/module/zfs/policy.c b/module/zfs/policy.c
index a723235d3..7f9456a67 100644
--- a/module/zfs/policy.c
+++ b/module/zfs/policy.c
@@ -70,7 +70,7 @@ static int
 priv_policy_user(const cred_t *cr, int capability, boolean_t all, int err)
 {
 	/*
-	 * All priv_policy_user checks are preceeded by kuid/kgid_has_mapping()
+	 * All priv_policy_user checks are preceded by kuid/kgid_has_mapping()
 	 * checks. If we cannot do them, we shouldn't be using ns_capable()
 	 * since we don't know whether the affected files are valid in our
 	 * namespace. Note that kuid_has_mapping() came after cred->user_ns, so
diff --git a/module/zfs/qat.h b/module/zfs/qat.h
index 9014c0314..fdd608139 100644
--- a/module/zfs/qat.h
+++ b/module/zfs/qat.h
@@ -85,7 +85,7 @@ typedef struct qat_stats {
 	 * Number of fails in the QAT compression / decompression engine.
 	 * Note: when a QAT error happens, it doesn't necessarily indicate a
 	 * critical hardware issue. Sometimes it is because the output buffer
-	 * is not big enough. The compression job will be transfered to the
+	 * is not big enough. The compression job will be transferred to the
 	 * gzip software implementation so the functionality of ZFS is not
 	 * impacted.
 	 */
@@ -118,7 +118,7 @@ typedef struct qat_stats {
 	/*
 	 * Number of fails in the QAT encryption / decryption engine.
 	 * Note: when a QAT error happens, it doesn't necessarily indicate a
-	 * critical hardware issue. The encryption job will be transfered
+	 * critical hardware issue. The encryption job will be transferred
 	 * to the software implementation so the functionality of ZFS is
 	 * not impacted.
 	 */
@@ -135,7 +135,7 @@ typedef struct qat_stats {
 	/*
 	 * Number of fails in the QAT checksum engine.
 	 * Note: when a QAT error happens, it doesn't necessarily indicate a
-	 * critical hardware issue. The checksum job will be transfered to the
+	 * critical hardware issue. The checksum job will be transferred to the
 	 * software implementation so the functionality of ZFS is not impacted.
 	 */
 	kstat_named_t cksum_fails;
diff --git a/module/zfs/sa.c b/module/zfs/sa.c
index f718e7662..621838396 100644
--- a/module/zfs/sa.c
+++ b/module/zfs/sa.c
@@ -83,7 +83,7 @@
  * Layouts are simply an array of the attributes and their
  * ordering i.e. [0, 1, 4, 5, 2]
  *
- * Each distinct layout is given a unique layout number and that is whats
+ * Each distinct layout is given a unique layout number and that is what's
  * stored in the header at the beginning of the SA data buffer.
  *
  * A layout only covers a single dbuf (bonus or spill).  If a set of
@@ -95,7 +95,7 @@
  * Adding a single attribute will cause the entire set of attributes to
  * be rewritten and could result in a new layout number being constructed
  * as part of the rewrite if no such layout exists for the new set of
- * attribues.  The new attribute will be appended to the end of the already
+ * attributes.  The new attribute will be appended to the end of the already
  * existing attributes.
  *
  * Both the attribute registration and attribute layout information are
diff --git a/module/zfs/spa.c b/module/zfs/spa.c
index c404e876b..f4a6f3f45 100644
--- a/module/zfs/spa.c
+++ b/module/zfs/spa.c
@@ -2204,7 +2204,7 @@ spa_load_verify_done(zio_t *zio)
 }
 
 /*
- * Maximum number of inflight bytes is the log2 faction of the arc size.
+ * Maximum number of inflight bytes is the log2 fraction of the arc size.
  * By default, we set it to 1/16th of the arc.
  */
 int spa_load_verify_shift = 4;
@@ -3030,7 +3030,7 @@ spa_activity_check_duration(spa_t *spa, uberblock_t *ub)
 
 	} else if (MMP_VALID(ub)) {
 		/*
-		 * zfs-0.7 compatability case
+		 * zfs-0.7 compatibility case
 		 */
 
 		import_delay = MAX(import_delay, (multihost_interval +
@@ -4339,7 +4339,7 @@ spa_ld_check_for_config_update(spa_t *spa, uint64_t config_cache_txg,
 			need_update = B_TRUE;
 
 	/*
-	 * Update the config cache asychronously in case we're the
+	 * Update the config cache asynchronously in case we're the
 	 * root pool, in which case the config cache isn't writable yet.
 	 */
 	if (need_update)
@@ -4652,7 +4652,7 @@ spa_load_impl(spa_t *spa, spa_import_type_t type, char **ereport)
 			return (error);
 
 		/*
-		 * Redo the loading process process again with the
+		 * Redo the loading process again with the
 		 * checkpointed uberblock.
 		 */
 		spa_ld_prepare_for_reload(spa);
@@ -8441,7 +8441,7 @@ spa_sync_props(void *arg, dmu_tx_t *tx)
 		case ZPOOL_PROP_READONLY:
 		case ZPOOL_PROP_CACHEFILE:
 			/*
-			 * 'readonly' and 'cachefile' are also non-persisitent
+			 * 'readonly' and 'cachefile' are also non-persistent
 			 * properties.
 			 */
 			break;
@@ -9278,7 +9278,7 @@ EXPORT_SYMBOL(spa_inject_delref);
 EXPORT_SYMBOL(spa_scan_stat_init);
 EXPORT_SYMBOL(spa_scan_get_stats);
 
-/* device maniion */
+/* device manipulation */
 EXPORT_SYMBOL(spa_vdev_add);
 EXPORT_SYMBOL(spa_vdev_attach);
 EXPORT_SYMBOL(spa_vdev_detach);
diff --git a/module/zfs/spa_checkpoint.c b/module/zfs/spa_checkpoint.c
index d6f68ceda..44711acef 100644
--- a/module/zfs/spa_checkpoint.c
+++ b/module/zfs/spa_checkpoint.c
@@ -102,7 +102,7 @@
  *   Once the synctask is done and the discarding zthr is awake, we discard
  *   the checkpointed data over multiple TXGs by having the zthr prefetching
  *   entries from vdev_checkpoint_sm and then starting a synctask that places
- *   them as free blocks in to their respective ms_allocatable and ms_sm
+ *   them as free blocks into their respective ms_allocatable and ms_sm
  *   structures.
  *   [see spa_checkpoint_discard_thread()]
  *
diff --git a/module/zfs/spa_errlog.c b/module/zfs/spa_errlog.c
index e42f8a021..fa5120eb6 100644
--- a/module/zfs/spa_errlog.c
+++ b/module/zfs/spa_errlog.c
@@ -31,7 +31,7 @@
  * and the current log.  All errors seen are logged to the current log.  When a
  * scrub completes, the current log becomes the last log, the last log is thrown
  * out, and the current log is reinitialized.  This way, if an error is somehow
- * corrected, a new scrub will show that that it no longer exists, and will be
+ * corrected, a new scrub will show that it no longer exists, and will be
  * deleted from the log when the scrub completes.
  *
  * The log is stored using a ZAP object whose key is a string form of the
diff --git a/module/zfs/spa_history.c b/module/zfs/spa_history.c
index 68c6b544e..d2839b97f 100644
--- a/module/zfs/spa_history.c
+++ b/module/zfs/spa_history.c
@@ -63,7 +63,7 @@
  * overwrite the original creation of the pool.  'sh_phys_max_off' is the
  * physical ending offset in bytes of the log.  This tells you the length of
  * the buffer. 'sh_eof' is the logical EOF (in bytes).  Whenever a record
- * is added, 'sh_eof' is incremented by the the size of the record.
+ * is added, 'sh_eof' is incremented by the size of the record.
  * 'sh_eof' is never decremented.  'sh_bof' is the logical BOF (in bytes).
  * This is where the consumer should start reading from after reading in
  * the 'zpool create' portion of the log.
diff --git a/module/zfs/spa_log_spacemap.c b/module/zfs/spa_log_spacemap.c
index 550aa1e3a..8a8593a27 100644
--- a/module/zfs/spa_log_spacemap.c
+++ b/module/zfs/spa_log_spacemap.c
@@ -180,7 +180,7 @@
 unsigned long zfs_log_sm_blksz = 1ULL << 17;
 
 /*
- * Percentage of the overall system’s memory that ZFS allows to be
+ * Percentage of the overall system's memory that ZFS allows to be
  * used for unflushed changes (e.g. the sum of size of all the nodes
  * in the unflushed trees).
  *
@@ -392,7 +392,7 @@ summary_entry_is_full(spa_t *spa, log_summary_entry_t *e)
  * Update the log summary information to reflect the fact that a metaslab
  * was flushed or destroyed (e.g due to device removal or pool export/destroy).
  *
- * We typically flush the oldest flushed metaslab so the first (and olderst)
+ * We typically flush the oldest flushed metaslab so the first (and oldest)
  * entry of the summary is updated. However if that metaslab is getting loaded
  * we may flush the second oldest one which may be part of an entry later in
  * the summary. Moreover, if we call into this function from metaslab_fini()
@@ -838,7 +838,7 @@ spa_flush_metaslabs(spa_t *spa, dmu_tx_t *tx)
 
 /*
  * Close the log space map for this TXG and update the block counts
- * for the the log's in-memory structure and the summary.
+ * for the log's in-memory structure and the summary.
  */
 void
 spa_sync_close_syncing_log_sm(spa_t *spa)
diff --git a/module/zfs/txg.c b/module/zfs/txg.c
index b7914e000..dc085f78d 100644
--- a/module/zfs/txg.c
+++ b/module/zfs/txg.c
@@ -644,8 +644,8 @@ txg_quiesce_thread(void *arg)
 
 /*
  * Delay this thread by delay nanoseconds if we are still in the open
- * transaction group and there is already a waiting txg quiesing or quiesced.
- * Abort the delay if this txg stalls or enters the quiesing state.
+ * transaction group and there is already a waiting txg quiescing or quiesced.
+ * Abort the delay if this txg stalls or enters the quiescing state.
  */
 void
 txg_delay(dsl_pool_t *dp, uint64_t txg, hrtime_t delay, hrtime_t resolution)
@@ -768,7 +768,7 @@ txg_wait_open(dsl_pool_t *dp, uint64_t txg, boolean_t should_quiesce)
 
 /*
  * If there isn't a txg syncing or in the pipeline, push another txg through
- * the pipeline by queiscing the open txg.
+ * the pipeline by quiescing the open txg.
  */
 void
 txg_kick(dsl_pool_t *dp)
diff --git a/module/zfs/vdev.c b/module/zfs/vdev.c
index a6280e011..f083732b2 100644
--- a/module/zfs/vdev.c
+++ b/module/zfs/vdev.c
@@ -223,7 +223,7 @@ vdev_default_xlate(vdev_t *vd, const range_seg_t *in, range_seg_t *res)
 }
 
 /*
- * Derive the enumerated alloction bias from string input.
+ * Derive the enumerated allocation bias from string input.
  * String origin is either the per-vdev zap or zpool(1M).
  */
 static vdev_alloc_bias_t
@@ -1321,7 +1321,7 @@ vdev_metaslab_init(vdev_t *vd, uint64_t txg)
 
 #ifndef _KERNEL
 		/*
-		 * To accomodate zdb_leak_init() fake indirect
+		 * To accommodate zdb_leak_init() fake indirect
 		 * metaslabs, we allocate a metaslab group for
 		 * indirect vdevs which normally don't have one.
 		 */
@@ -4191,7 +4191,7 @@ vdev_space_update(vdev_t *vd, int64_t alloc_delta, int64_t defer_delta,
 	 * Apply the inverse of the psize-to-asize (ie. RAID-Z) space-expansion
 	 * factor.  We must calculate this here and not at the root vdev
 	 * because the root vdev's psize-to-asize is simply the max of its
-	 * childrens', thus not accurate enough for us.
+	 * children's, thus not accurate enough for us.
 	 */
 	dspace_delta = vdev_deflated_space(vd, space_delta);
 
diff --git a/module/zfs/vdev_cache.c b/module/zfs/vdev_cache.c
index 0f1d9448b..b63b9f979 100644
--- a/module/zfs/vdev_cache.c
+++ b/module/zfs/vdev_cache.c
@@ -46,7 +46,7 @@
  * terribly wasteful of bandwidth.  A more intelligent version of the cache
  * could keep track of access patterns and not do read-ahead unless it sees
  * at least two temporally close I/Os to the same region.  Currently, only
- * metadata I/O is inflated.  A futher enhancement could take advantage of
+ * metadata I/O is inflated.  A further enhancement could take advantage of
  * more semantic information about the I/O.  And it could use something
  * faster than an AVL tree; that was chosen solely for convenience.
  *
diff --git a/module/zfs/vdev_initialize.c b/module/zfs/vdev_initialize.c
index a355f185c..4963ba38d 100644
--- a/module/zfs/vdev_initialize.c
+++ b/module/zfs/vdev_initialize.c
@@ -602,7 +602,7 @@ vdev_initialize_stop_wait(spa_t *spa, list_t *vd_list)
 }
 
 /*
- * Stop initializing a device, with the resultant initialing state being
+ * Stop initializing a device, with the resultant initializing state being
  * tgt_state.  For blocking behavior pass NULL for vd_list.  Otherwise, when
  * a list_t is provided the stopping vdev is inserted in to the list.  Callers
  * are then required to call vdev_initialize_stop_wait() to block for all the
diff --git a/module/zfs/vdev_mirror.c b/module/zfs/vdev_mirror.c
index 23ff75bfc..2f75fca82 100644
--- a/module/zfs/vdev_mirror.c
+++ b/module/zfs/vdev_mirror.c
@@ -485,7 +485,7 @@ vdev_mirror_preferred_child_randomize(zio_t *zio)
 
 /*
  * Try to find a vdev whose DTL doesn't contain the block we want to read
- * prefering vdevs based on determined load.
+ * preferring vdevs based on determined load.
  *
  * Try to find a child whose DTL doesn't contain the block we want to read.
  * If we can't, try the read on any vdev we haven't already tried.
diff --git a/module/zfs/vdev_queue.c b/module/zfs/vdev_queue.c
index 86b20f134..d3d9a6baa 100644
--- a/module/zfs/vdev_queue.c
+++ b/module/zfs/vdev_queue.c
@@ -893,7 +893,7 @@ vdev_queue_change_io_priority(zio_t *zio, zio_priority_t priority)
 	 * ZIO_PRIORITY_NOW is used by the vdev cache code and the aggregate zio
 	 * code to issue IOs without adding them to the vdev queue. In this
 	 * case, the zio is already going to be issued as quickly as possible
-	 * and so it doesn't need any reprioitization to help.
+	 * and so it doesn't need any reprioritization to help.
 	 */
 	if (zio->io_priority == ZIO_PRIORITY_NOW)
 		return;
diff --git a/module/zfs/vdev_raidz.c b/module/zfs/vdev_raidz.c
index 327b18671..f63ccaa94 100644
--- a/module/zfs/vdev_raidz.c
+++ b/module/zfs/vdev_raidz.c
@@ -98,7 +98,7 @@
  *	R = 4^n-1 * D_0 + 4^n-2 * D_1 + ... + 4^1 * D_n-2 + 4^0 * D_n-1
  *	  = ((...((D_0) * 4 + D_1) * 4 + ...) * 4 + D_n-2) * 4 + D_n-1
  *
- * We chose 1, 2, and 4 as our generators because 1 corresponds to the trival
+ * We chose 1, 2, and 4 as our generators because 1 corresponds to the trivial
  * XOR operation, and 2 and 4 can be computed quickly and generate linearly-
  * independent coefficients. (There are no additional coefficients that have
  * this property which is why the uncorrected Plank method breaks down.)
@@ -447,7 +447,7 @@ vdev_raidz_map_alloc(zio_t *zio, uint64_t ashift, uint64_t dcols,
 	/*
 	 * If all data stored spans all columns, there's a danger that parity
 	 * will always be on the same device and, since parity isn't read
-	 * during normal operation, that that device's I/O bandwidth won't be
+	 * during normal operation, that device's I/O bandwidth won't be
 	 * used effectively. We therefore switch the parity every 1MB.
 	 *
 	 * ... at least that was, ostensibly, the theory. As a practical
@@ -2336,7 +2336,7 @@ vdev_raidz_state_change(vdev_t *vd, int faulted, int degraded)
 /*
  * Determine if any portion of the provided block resides on a child vdev
  * with a dirty DTL and therefore needs to be resilvered.  The function
- * assumes that at least one DTL is dirty which imples that full stripe
+ * assumes that at least one DTL is dirty which implies that full stripe
  * width blocks must be resilvered.
  */
 static boolean_t
diff --git a/module/zfs/vdev_raidz_math_aarch64_neon_common.h b/module/zfs/vdev_raidz_math_aarch64_neon_common.h
index 024917417..0ea2ad611 100644
--- a/module/zfs/vdev_raidz_math_aarch64_neon_common.h
+++ b/module/zfs/vdev_raidz_math_aarch64_neon_common.h
@@ -42,7 +42,7 @@
 /*
  * Here we need registers not used otherwise.
  * They will be used in unused ASM for the case
- * with more registers than required... but GGC
+ * with more registers than required... but GCC
  * will still need to make sure the constraints
  * are correct, and duplicate constraints are illegal
  * ... and we use the "register" number as a name
diff --git a/module/zfs/zcp.c b/module/zfs/zcp.c
index 1aeea1314..44e4d230a 100644
--- a/module/zfs/zcp.c
+++ b/module/zfs/zcp.c
@@ -66,7 +66,7 @@
  * consuming excessive system or running forever.  If one of these limits is
  * hit, the channel program will be stopped immediately and return from
  * zcp_eval() with an error code. No attempt will be made to roll back or undo
- * any changes made by the channel program before the error occured.
+ * any changes made by the channel program before the error occurred.
  * Consumers invoking zcp_eval() from elsewhere in the kernel may pass a time
  * limit of 0, disabling the time limit.
  *
@@ -77,7 +77,7 @@
  * In place of a return value, an error message will also be returned in the
  * 'result' nvlist containing information about the error. No attempt will be
  * made to roll back or undo any changes made by the channel program before the
- * error occured.
+ * error occurred.
  *
  * 3. If an error occurs inside a ZFS library call which returns an error code,
  * the error is returned to the Lua script to be handled as desired.
@@ -160,7 +160,7 @@ zcp_argerror(lua_State *state, int narg, const char *msg, ...)
  * of a function call.
  *
  * If an error occurs, the cleanup function will be invoked exactly once and
- * then unreigstered.
+ * then unregistered.
  *
  * Returns the registered cleanup handler so the caller can deregister it
  * if no error occurs.
diff --git a/module/zfs/zcp_get.c b/module/zfs/zcp_get.c
index 0a5f0b824..42c125d48 100644
--- a/module/zfs/zcp_get.c
+++ b/module/zfs/zcp_get.c
@@ -547,7 +547,7 @@ get_zap_prop(lua_State *state, dsl_dataset_t *ds, zfs_prop_t zfs_prop)
 		error = dsl_prop_get_ds(ds, prop_name, sizeof (numval),
 		    1, &numval, setpoint);
 
-		/* Fill in temorary value for prop, if applicable */
+		/* Fill in temporary value for prop, if applicable */
 		(void) get_temporary_prop(ds, zfs_prop, &numval, setpoint);
 
 		/* Push value to lua stack */
@@ -678,7 +678,7 @@ parse_userquota_prop(const char *prop_name, zfs_userquota_prop_t *type,
 	if (strncmp(cp, "S-1-", 4) == 0) {
 		/*
 		 * It's a numeric SID (eg "S-1-234-567-89") and we want to
-		 * seperate the domain id and the rid
+		 * separate the domain id and the rid
 		 */
 		int domain_len = strrchr(cp, '-') - cp;
 		domain_val = kmem_alloc(domain_len + 1, KM_SLEEP);
diff --git a/module/zfs/zcp_iter.c b/module/zfs/zcp_iter.c
index 7600e662d..f727c56f2 100644
--- a/module/zfs/zcp_iter.c
+++ b/module/zfs/zcp_iter.c
@@ -457,7 +457,7 @@ static zcp_list_info_t zcp_system_props_list_info = {
 };
 
 /*
- * Get a list of all visble system properties and their values for a given
+ * Get a list of all visible system properties and their values for a given
  * dataset. Returned on the stack as a Lua table.
  */
 static int
diff --git a/module/zfs/zfs_acl.c b/module/zfs/zfs_acl.c
index b1af4da2f..26af91e27 100644
--- a/module/zfs/zfs_acl.c
+++ b/module/zfs/zfs_acl.c
@@ -810,7 +810,7 @@ zfs_acl_xform(znode_t *zp, zfs_acl_t *aclp, cred_t *cr)
 	 * for zfs_copy_ace_2_fuid().
 	 *
 	 * We only convert an ACL once, so this won't happen
-	 * everytime.
+	 * every time.
 	 */
 	oldaclp = kmem_alloc(sizeof (zfs_oldace_t) * aclp->z_acl_count,
 	    KM_SLEEP);
diff --git a/module/zfs/zfs_byteswap.c b/module/zfs/zfs_byteswap.c
index 7893bde4e..1b8bb82c3 100644
--- a/module/zfs/zfs_byteswap.c
+++ b/module/zfs/zfs_byteswap.c
@@ -44,7 +44,7 @@ zfs_oldace_byteswap(ace_t *ace, int ace_cnt)
 }
 
 /*
- * swap ace_t and ace_oject_t
+ * swap ace_t and ace_object_t
  */
 void
 zfs_ace_byteswap(void *buf, size_t size, boolean_t zfs_layout)
@@ -70,7 +70,7 @@ zfs_ace_byteswap(void *buf, size_t size, boolean_t zfs_layout)
 			 * larger than needed to hold the aces
 			 * present.  As long as we do not do any
 			 * swapping beyond the end of our block we are
-			 * okay.  It it safe to swap any non-ace data
+			 * okay.  It is safe to swap any non-ace data
 			 * within the block since it is just zeros.
 			 */
 			if (ptr + sizeof (zfs_ace_hdr_t) > end) {
diff --git a/module/zfs/zfs_ctldir.c b/module/zfs/zfs_ctldir.c
index b3cbc7d7e..1e61ef06d 100644
--- a/module/zfs/zfs_ctldir.c
+++ b/module/zfs/zfs_ctldir.c
@@ -596,7 +596,7 @@ zfsctl_root(znode_t *zp)
 
 /*
  * Generate a long fid to indicate a snapdir. We encode whether snapdir is
- * already monunted in gen field. We do this because nfsd lookup will not
+ * already mounted in gen field. We do this because nfsd lookup will not
  * trigger automount. Next time the nfsd does fh_to_dentry, we will notice
  * this and do automount and return ESTALE to force nfsd revalidate and follow
  * mount.
diff --git a/module/zfs/zfs_dir.c b/module/zfs/zfs_dir.c
index 63ac97754..6bdad737c 100644
--- a/module/zfs/zfs_dir.c
+++ b/module/zfs/zfs_dir.c
@@ -55,7 +55,7 @@
 #include <sys/zfs_sa.h>
 
 /*
- * zfs_match_find() is used by zfs_dirent_lock() to peform zap lookups
+ * zfs_match_find() is used by zfs_dirent_lock() to perform zap lookups
  * of names after deciding which is the appropriate lookup interface.
  */
 static int
@@ -232,7 +232,7 @@ zfs_dirent_lock(zfs_dirlock_t **dlpp, znode_t *dzp, char *name, znode_t **zpp,
 	/*
 	 * Wait until there are no locks on this name.
 	 *
-	 * Don't grab the the lock if it is already held. However, cannot
+	 * Don't grab the lock if it is already held. However, cannot
 	 * have both ZSHARED and ZHAVELOCK together.
 	 */
 	ASSERT(!(flag & ZSHARED) || !(flag & ZHAVELOCK));
diff --git a/module/zfs/zfs_ioctl.c b/module/zfs/zfs_ioctl.c
index 399b15cbd..c5093fd44 100644
--- a/module/zfs/zfs_ioctl.c
+++ b/module/zfs/zfs_ioctl.c
@@ -2106,7 +2106,7 @@ zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
 		 * which we aren't supposed to do with a
 		 * DS_MODE_USER hold, because it could be
 		 * inconsistent.  So this is a bit of a workaround...
-		 * XXX reading with out owning
+		 * XXX reading without owning
 		 */
 		if (!zc->zc_objset_stats.dds_inconsistent &&
 		    dmu_objset_type(os) == DMU_OST_ZVOL) {
@@ -7097,7 +7097,7 @@ zfs_check_input_nvpairs(nvlist_t *innvl, const zfs_ioc_vec_t *vec)
 			continue;
 
 		if (nvl_keys[k].zkey_flags & ZK_WILDCARDLIST) {
-			/* at least one non-optionial key is expected here */
+			/* at least one non-optional key is expected here */
 			if (!required_keys_found)
 				return (SET_ERROR(ZFS_ERR_IOC_ARG_REQUIRED));
 			continue;
diff --git a/module/zfs/zfs_vfsops.c b/module/zfs/zfs_vfsops.c
index 34f4842d7..0914e4b7d 100644
--- a/module/zfs/zfs_vfsops.c
+++ b/module/zfs/zfs_vfsops.c
@@ -1477,7 +1477,7 @@ zfs_statvfs(struct dentry *dentry, struct kstatfs *statp)
 	 * "preferred" size.
 	 */
 
-	/* Round up so we never have a filesytem using 0 blocks. */
+	/* Round up so we never have a filesystem using 0 blocks. */
 	refdbytes = P2ROUNDUP(refdbytes, statp->f_bsize);
 	statp->f_blocks = (refdbytes + availbytes) >> bshift;
 	statp->f_bfree = availbytes >> bshift;
@@ -2431,7 +2431,7 @@ zfs_get_zplprop(objset_t *os, zfs_prop_t prop, uint64_t *value)
 }
 
 /*
- * Return true if the coresponding vfs's unmounted flag is set.
+ * Return true if the corresponding vfs's unmounted flag is set.
  * Otherwise return false.
  * If this function returns true we know VFS unmount has been initiated.
  */
diff --git a/module/zfs/zfs_vnops.c b/module/zfs/zfs_vnops.c
index 1ad6f1588..de7b59935 100644
--- a/module/zfs/zfs_vnops.c
+++ b/module/zfs/zfs_vnops.c
@@ -889,7 +889,7 @@ zfs_write(struct inode *ip, uio_t *uio, int ioflag, cred_t *cr)
 		 * Clear Set-UID/Set-GID bits on successful write if not
 		 * privileged and at least one of the execute bits is set.
 		 *
-		 * It would be nice to to this after all writes have
+		 * It would be nice to do this after all writes have
 		 * been done, but that would still expose the ISUID/ISGID
 		 * to another app after the partial write is committed.
 		 *
@@ -4378,7 +4378,7 @@ top:
 		uint64_t txtype = TX_LINK;
 		/*
 		 * tmpfile is created to be in z_unlinkedobj, so remove it.
-		 * Also, we don't log in ZIL, be cause all previous file
+		 * Also, we don't log in ZIL, because all previous file
 		 * operation on the tmpfile are ignored by ZIL. Instead we
 		 * always wait for txg to sync to make sure all previous
 		 * operation are sync safe.
@@ -4638,7 +4638,7 @@ zfs_dirty_inode(struct inode *ip, int flags)
 
 #ifdef I_DIRTY_TIME
 	/*
-	 * This is the lazytime semantic indroduced in Linux 4.0
+	 * This is the lazytime semantic introduced in Linux 4.0
 	 * This flag will only be called from update_time when lazytime is set.
 	 * (Note, I_DIRTY_SYNC will also set if not lazytime)
 	 * Fortunately mtime and ctime are managed within ZFS itself, so we
diff --git a/module/zfs/zfs_znode.c b/module/zfs/zfs_znode.c
index 8512db9bc..549c701a0 100644
--- a/module/zfs/zfs_znode.c
+++ b/module/zfs/zfs_znode.c
@@ -788,7 +788,7 @@ zfs_mknode(znode_t *dzp, vattr_t *vap, dmu_tx_t *tx, cred_t *cr,
 	}
 
 	/*
-	 * No execs denied will be deterimed when zfs_mode_compute() is called.
+	 * No execs denied will be determined when zfs_mode_compute() is called.
 	 */
 	pflags |= acl_ids->z_aclp->z_hints &
 	    (ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|ZFS_ACL_AUTO_INHERIT|
@@ -1271,7 +1271,7 @@ zfs_rezget(znode_t *zp)
 	 * If the file has zero links, then it has been unlinked on the send
 	 * side and it must be in the received unlinked set.
 	 * We call zfs_znode_dmu_fini() now to prevent any accesses to the
-	 * stale data and to prevent automatical removal of the file in
+	 * stale data and to prevent automatic removal of the file in
 	 * zfs_zinactive().  The file will be removed either when it is removed
 	 * on the send side and the next incremental stream is received or
 	 * when the unlinked set gets processed.
diff --git a/module/zfs/zil.c b/module/zfs/zil.c
index 98678aa44..8411e333b 100644
--- a/module/zfs/zil.c
+++ b/module/zfs/zil.c
@@ -58,7 +58,7 @@
  *
  * In the event of a crash or power loss, the itxs contained by each
  * dataset's on-disk ZIL will be replayed when that dataset is first
- * instantiated (e.g. if the dataset is a normal fileystem, when it is
+ * instantiated (e.g. if the dataset is a normal filesystem, when it is
  * first mounted).
  *
  * As hinted at above, there is one ZIL per dataset (both the in-memory
@@ -2002,7 +2002,7 @@ zil_itx_assign(zilog_t *zilog, itx_t *itx, dmu_tx_t *tx)
 /*
  * If there are any in-memory intent log transactions which have now been
  * synced then start up a taskq to free them. We should only do this after we
- * have written out the uberblocks (i.e. txg has been comitted) so that
+ * have written out the uberblocks (i.e. txg has been committed) so that
  * don't inadvertently clean out in-memory log records that would be required
  * by zil_commit().
  */
diff --git a/module/zfs/zio_checksum.c b/module/zfs/zio_checksum.c
index 7b148375d..179fab5de 100644
--- a/module/zfs/zio_checksum.c
+++ b/module/zfs/zio_checksum.c
@@ -308,7 +308,7 @@ zio_checksum_template_init(enum zio_checksum checksum, spa_t *spa)
 	mutex_exit(&spa->spa_cksum_tmpls_lock);
 }
 
-/* convenience function to update a checksum to accomodate an encryption MAC */
+/* convenience function to update a checksum to accommodate an encryption MAC */
 static void
 zio_checksum_handle_crypt(zio_cksum_t *cksum, zio_cksum_t *saved, boolean_t xor)
 {
diff --git a/module/zfs/zio_compress.c b/module/zfs/zio_compress.c
index f5cbc3e82..cdaade27c 100644
--- a/module/zfs/zio_compress.c
+++ b/module/zfs/zio_compress.c
@@ -155,7 +155,7 @@ zio_decompress_data(enum zio_compress c, abd_t *src, void *dst,
 	abd_return_buf(src, tmp, s_len);
 
 	/*
-	 * Decompression shouldn't fail, because we've already verifyied
+	 * Decompression shouldn't fail, because we've already verified
 	 * the checksum.  However, for extra protection (e.g. against bitflips
 	 * in non-ECC RAM), we handle this error (and test it).
 	 */
diff --git a/module/zfs/zio_crypt.c b/module/zfs/zio_crypt.c
index eb781b64f..7cf20f413 100644
--- a/module/zfs/zio_crypt.c
+++ b/module/zfs/zio_crypt.c
@@ -369,7 +369,7 @@ error:
 /*
  * This function handles all encryption and decryption in zfs. When
  * encrypting it expects puio to reference the plaintext and cuio to
- * reference the cphertext. cuio must have enough space for the
+ * reference the ciphertext. cuio must have enough space for the
  * ciphertext + room for a MAC. datalen should be the length of the
  * plaintext / ciphertext alone.
  */
@@ -934,7 +934,7 @@ zio_crypt_bp_zero_nonportable_blkprop(blkptr_t *bp, uint64_t version)
 
 	/*
 	 * At L0 we want to verify these fields to ensure that data blocks
-	 * can not be reinterpretted. For instance, we do not want an attacker
+	 * can not be reinterpreted. For instance, we do not want an attacker
 	 * to trick us into returning raw lz4 compressed data to the user
 	 * by modifying the compression bits. At higher levels, we cannot
 	 * enforce this policy since raw sends do not convey any information
diff --git a/module/zfs/zio_inject.c b/module/zfs/zio_inject.c
index 78896d3dc..d8af503bd 100644
--- a/module/zfs/zio_inject.c
+++ b/module/zfs/zio_inject.c
@@ -113,7 +113,7 @@ freq_triggered(uint32_t frequency)
 		return (B_TRUE);
 
 	/*
-	 * Note: we still handle legacy (unscaled) frequecy values
+	 * Note: we still handle legacy (unscaled) frequency values
 	 */
 	uint32_t maximum = (frequency <= 100) ? 100 : ZI_PERCENTAGE_MAX;
 
diff --git a/module/zfs/zpl_super.c b/module/zfs/zpl_super.c
index 216c79401..810ab2898 100644
--- a/module/zfs/zpl_super.c
+++ b/module/zfs/zpl_super.c
@@ -297,7 +297,7 @@ zpl_mount_impl(struct file_system_type *fs_type, int flags, zfs_mnt_t *zm)
 	 * The dsl pool lock must be released prior to calling sget().
 	 * It is possible sget() may block on the lock in grab_super()
 	 * while deactivate_super() holds that same lock and waits for
-	 * a txg sync.  If the dsl_pool lock is held over over sget()
+	 * a txg sync.  If the dsl_pool lock is held over sget()
 	 * this can prevent the pool sync and cause a deadlock.
 	 */
 	dsl_pool_rele(dmu_objset_pool(os), FTAG);
diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c
index f74eb28ae..840b8d008 100644
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@@ -1997,7 +1997,7 @@ zvol_create_snap_minor_cb(const char *dsname, void *arg)
 	/* at this point, the dsname should name a snapshot */
 	if (strchr(dsname, '@') == 0) {
 		dprintf("zvol_create_snap_minor_cb(): "
-		    "%s is not a shapshot name\n", dsname);
+		    "%s is not a snapshot name\n", dsname);
 	} else {
 		minors_job_t *job;
 		char *n = strdup(dsname);