Fix various typos

Correct an assortment of typos throughout the code base.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Closes #11774

module/avl/avl.c

@@ -1008,7 +1008,7 @@ avl_destroy_nodes(avl_tree_t *tree, void **cookie)
 	--tree->avl_numnodes;
 
 	/*
-	 * If we just did a right child or there isn't one, go up to parent.
+	 * If we just removed a right child or there isn't one, go up to parent.
 	 */
 	if (child == 1 || parent->avl_child[1] == NULL) {
 		node = parent;

module/icp/algs/modes/gcm.c

@@ -1399,7 +1399,7 @@ gcm_decrypt_final_avx(gcm_ctx_t *ctx, crypto_data_t *out, size_t block_size)
 		}
 		datap += done;
 	}
-	/* Decrypt remainder, which is less then chunk size, in one go. */
+	/* Decrypt remainder, which is less than chunk size, in one go. */
 	kfpu_begin();
 	if (bleft >= GCM_AVX_MIN_DECRYPT_BYTES) {
 		done = aesni_gcm_decrypt(datap, datap, bleft,
@@ -1415,7 +1415,7 @@ gcm_decrypt_final_avx(gcm_ctx_t *ctx, crypto_data_t *out, size_t block_size)
 	ASSERT(bleft < GCM_AVX_MIN_DECRYPT_BYTES);
 
 	/*
-	 * Now less then GCM_AVX_MIN_DECRYPT_BYTES bytes remain,
+	 * Now less than GCM_AVX_MIN_DECRYPT_BYTES bytes remain,
 	 * decrypt them block by block.
 	 */
 	while (bleft > 0) {

module/os/freebsd/zfs/abd_os.c

@@ -306,7 +306,7 @@ void
 abd_free_linear_page(abd_t *abd)
 {
 	/*
-	 * FreeBSD does not have have scatter linear pages
+	 * FreeBSD does not have scatter linear pages
 	 * so there is an error.
 	 */
 	VERIFY(0);

module/os/freebsd/zfs/zfs_vnops_os.c

@@ -3577,7 +3577,7 @@ zfs_symlink(znode_t *dzp, const char *name, vattr_t *vap,
 
 	/*
 	 * Create a new object for the symlink.
-	 * for version 4 ZPL datsets the symlink will be an SA attribute
+	 * for version 4 ZPL datasets the symlink will be an SA attribute
 	 */
 	zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids);
 

module/os/freebsd/zfs/zio_crypt.c

@@ -114,7 +114,7 @@
  * Similarly to ZIL blocks, the core part of each dnode_phys_t needs to be left
  * in plaintext for scrubbing and claiming, but the bonus buffers might contain
  * sensitive user data. The function zio_crypt_init_uios_dnode() handles parsing
- * which which pieces of the block need to be encrypted. For more details about
+ * which pieces of the block need to be encrypted. For more details about
  * dnode authentication and encryption, see zio_crypt_init_uios_dnode().
  *
  * OBJECT SET AUTHENTICATION:

module/os/freebsd/zfs/zvol_os.c

@@ -761,7 +761,7 @@ zvol_cdev_read(struct cdev *dev, struct uio *uio_s, int ioflag)
 	volsize = zv->zv_volsize;
 	/*
 	 * uio_loffset == volsize isn't an error as
-	 * its required for EOF processing.
+	 * it's required for EOF processing.
 	 */
 	if (zfs_uio_resid(&uio) > 0 &&
 	    (zfs_uio_offset(&uio) < 0 || zfs_uio_offset(&uio) > volsize))

module/os/linux/zfs/zfs_vnops_os.c

@@ -3140,7 +3140,7 @@ top:
 
 	/*
 	 * Create a new object for the symlink.
-	 * for version 4 ZPL datsets the symlink will be an SA attribute
+	 * for version 4 ZPL datasets the symlink will be an SA attribute
 	 */
 	zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids);
 

module/os/linux/zfs/zfs_znode.c

@@ -217,7 +217,7 @@ zfs_znode_fini(void)
  * created or destroyed.  This kind of locking would normally reside in the
  * znode itself but in this case that's impossible because the znode and SA
  * buffer may not yet exist.  Therefore the locking is handled externally
- * with an array of mutexs and AVLs trees which contain per-object locks.
+ * with an array of mutexes and AVLs trees which contain per-object locks.
  *
  * In zfs_znode_hold_enter() a per-object lock is created as needed, inserted
  * in to the correct AVL tree and finally the per-object lock is held.  In

module/os/linux/zfs/zio_crypt.c

@@ -115,7 +115,7 @@
  * Similarly to ZIL blocks, the core part of each dnode_phys_t needs to be left
  * in plaintext for scrubbing and claiming, but the bonus buffers might contain
  * sensitive user data. The function zio_crypt_init_uios_dnode() handles parsing
- * which which pieces of the block need to be encrypted. For more details about
+ * which pieces of the block need to be encrypted. For more details about
  * dnode authentication and encryption, see zio_crypt_init_uios_dnode().
  *
  * OBJECT SET AUTHENTICATION:

module/unicode/u8_textprep.c

@@ -884,7 +884,7 @@ do_decomp(size_t uv, uchar_t *u8s, uchar_t *s, int sz,
 	 *	| B0| B1| ... | Bm|
 	 *	+---+---+-...-+---+
 	 *
-	 *	The first byte, B0, is always less then 0xF5 (U8_DECOMP_BOTH).
+	 *	The first byte, B0, is always less than 0xF5 (U8_DECOMP_BOTH).
 	 *
 	 * (2) Canonical decomposition mappings:
 	 *

module/zcommon/zfs_comutil.c

@@ -26,7 +26,7 @@
 /*
  * This file is intended for functions that ought to be common between user
  * land (libzfs) and the kernel. When many common routines need to be shared
- * then a separate file should to be created.
+ * then a separate file should be created.
  */
 
 #if !defined(_KERNEL)

module/zfs/abd.c

@@ -381,7 +381,7 @@ abd_gang_add_gang(abd_t *pabd, abd_t *cabd, boolean_t free_on_free)
 		    child = list_next(&ABD_GANG(cabd).abd_gang_chain, child)) {
 			/*
 			 * We always pass B_FALSE for free_on_free as it is the
-			 * original child gang ABDs responsibilty to determine
+			 * original child gang ABDs responsibility to determine
 			 * if any of its child ABDs should be free'd on the call
 			 * to abd_free().
 			 */

module/zfs/arc.c

@@ -5036,7 +5036,7 @@ arc_reap_cb(void *arg, zthr_t *zthr)
 	 * memory in the system at a fraction of the arc_size (1/128th by
 	 * default).  If oversubscribed (free_memory < 0) then reduce the
 	 * target arc_size by the deficit amount plus the fractional
-	 * amount.  If free memory is positive but less then the fractional
+	 * amount.  If free memory is positive but less than the fractional
 	 * amount, reduce by what is needed to hit the fractional amount.
 	 */
 	free_memory = arc_available_memory();

module/zfs/dsl_bookmark.c

@@ -236,7 +236,7 @@ dsl_bookmark_create_check_impl(dsl_pool_t *dp,
 		error = SET_ERROR(EEXIST);
 		goto eholdnewbmds;
 	default:
-		/* dsl_bookmark_lookup_impl already did SET_ERRROR */
+		/* dsl_bookmark_lookup_impl already did SET_ERROR */
 		goto eholdnewbmds;
 	}
 
@@ -271,7 +271,7 @@ dsl_bookmark_create_check_impl(dsl_pool_t *dp,
 			error = SET_ERROR(ZFS_ERR_BOOKMARK_SOURCE_NOT_ANCESTOR);
 			break;
 		default:
-			/* dsl_bookmark_lookup already did SET_ERRROR */
+			/* dsl_bookmark_lookup already did SET_ERROR */
 			break;
 		}
 	} else {
@@ -536,7 +536,7 @@ dsl_bookmark_create_sync_impl_book(
 	 * Reasoning:
 	 * - The zbm_redaction_obj would be referred to by both source and new
 	 *   bookmark, but would be destroyed once either source or new is
-	 *   destroyed, resulting in use-after-free of the referrred object.
+	 *   destroyed, resulting in use-after-free of the referred object.
 	 * - User expectation when issuing the `zfs bookmark` command is that
 	 *   a normal bookmark of the source is created
 	 *

module/zfs/spa.c

@@ -6496,7 +6496,7 @@ spa_vdev_add(spa_t *spa, nvlist_t *nvroot)
 
 	/*
 	 * The virtual dRAID spares must be added after vdev tree is created
-	 * and the vdev guids are generated.  The guid of their assoicated
+	 * and the vdev guids are generated.  The guid of their associated
 	 * dRAID is stored in the config and used when opening the spare.
 	 */
 	if ((error = vdev_draid_spare_create(nvroot, vd, &ndraid,

module/zfs/vdev.c

@@ -1372,7 +1372,7 @@ vdev_metaslab_group_create(vdev_t *vd)
 
 		/*
 		 * The spa ashift min/max only apply for the normal metaslab
-		 * class. Class destination is late binding so ashift boundry
+		 * class. Class destination is late binding so ashift boundary
 		 * setting had to wait until now.
 		 */
 		if (vd->vdev_top == vd && vd->vdev_ashift != 0 &&
@@ -2046,7 +2046,7 @@ vdev_open(vdev_t *vd)
 		vd->vdev_max_asize = max_asize;
 
 		/*
-		 * If the vdev_ashift was not overriden at creation time,
+		 * If the vdev_ashift was not overridden at creation time,
 		 * then set it the logical ashift and optimize the ashift.
 		 */
 		if (vd->vdev_ashift == 0) {
@@ -2116,7 +2116,7 @@ vdev_open(vdev_t *vd)
 	}
 
 	/*
-	 * Track the the minimum allocation size.
+	 * Track the minimum allocation size.
 	 */
 	if (vd->vdev_top == vd && vd->vdev_ashift != 0 &&
 	    vd->vdev_islog == 0 && vd->vdev_aux == NULL) {
@@ -4570,7 +4570,7 @@ vdev_stat_update(zio_t *zio, uint64_t psize)
 
 			/*
 			 * Solely for the purposes of 'zpool iostat -lqrw'
-			 * reporting use the priority to catagorize the IO.
+			 * reporting use the priority to categorize the IO.
 			 * Only the following are reported to user space:
 			 *
 			 *   ZIO_PRIORITY_SYNC_READ,

module/zfs/vdev_raidz.c

@@ -1984,7 +1984,7 @@ raidz_reconstruct(zio_t *zio, int *ltgts, int ntgts, int nparity)
  *      2   4 5  first: increment to 3
  *        3 4 5  done
  *
- * This strategy works for dRAID but is less effecient when there are a large
+ * This strategy works for dRAID but is less efficient when there are a large
  * number of child vdevs and therefore permutations to check. Furthermore,
  * since the raidz_map_t rows likely do not overlap reconstruction would be
  * possible as long as there are no more than nparity data errors per row.

module/zfs/vdev_rebuild.c

@@ -81,7 +81,7 @@
  * Advantages:
  *
  *   - Sequential reconstruction is performed in LBA order which may be faster
- *     than healing reconstruction particularly when using using HDDs (or
+ *     than healing reconstruction particularly when using HDDs (or
  *     especially with SMR devices).  Only allocated capacity is resilvered.
  *
  *   - Sequential reconstruction is not constrained by ZFS block boundaries.

module/zfs/zfs_ioctl.c

@@ -233,7 +233,7 @@ unsigned long zfs_max_nvlist_src_size = 0;
 
 /*
  * When logging the output nvlist of an ioctl in the on-disk history, limit
- * the logged size to this many bytes.  This must be less then DMU_MAX_ACCESS.
+ * the logged size to this many bytes.  This must be less than DMU_MAX_ACCESS.
  * This applies primarily to zfs_ioc_channel_program().
  */
 unsigned long zfs_history_output_max = 1024 * 1024;

module/zstd/README.md

@@ -10,7 +10,7 @@ library, besides upgrading to a newer ZSTD release.
 Tree structure:
 
 * `zfs_zstd.c` is the actual `zzstd` kernel module.
-* `lib/` contains the the unmodified, [_"amalgamated"_](https://github.com/facebook/zstd/blob/dev/contrib/single_file_libs/README.md)
+* `lib/` contains the unmodified, [_"amalgamated"_](https://github.com/facebook/zstd/blob/dev/contrib/single_file_libs/README.md)
   version of the `Zstandard` library, generated from our template file
 * `zstd-in.c` is our template file for generating the library
 * `include/`: This directory contains supplemental includes for platform

module/zstd/include/zstd_compat_wrapper.h

@@ -34,7 +34,7 @@
 
 /*
  * This wrapper fixes a problem, in case the ZFS filesystem driver, is compiled
- * staticly into the kernel.
+ * statically into the kernel.
  * This will cause a symbol collision with the older in-kernel zstd library.
  * The following macros will simply rename all local zstd symbols and references
  *

module/zstd/zfs_zstd.c

@@ -258,7 +258,7 @@ zstd_mempool_alloc(struct zstd_pool *zstd_mempool, size_t size)
 	for (int i = 0; i < ZSTD_POOL_MAX; i++) {
 		pool = &zstd_mempool[i];
 		/*
-		 * This lock is simply a marker for a pool object beeing in use.
+		 * This lock is simply a marker for a pool object being in use.
 		 * If it's already hold, it will be skipped.
 		 *
 		 * We need to create it before checking it to avoid race
@@ -488,7 +488,7 @@ zfs_zstd_decompress_level(void *s_start, void *d_start, size_t s_len,
 
 	/*
 	 * NOTE: We ignore the ZSTD version for now. As soon as any
-	 * incompatibility occurrs, it has to be handled accordingly.
+	 * incompatibility occurs, it has to be handled accordingly.
 	 * The version can be accessed via `hdr_copy.version`.
 	 */