From: mwleeds@mailtundra.com <mwleeds@mailtundra.com>
Date: Sun, 7 Apr 2024 01:47:26 +0000 (-0700)
Subject: zfs: Add a comment to clarify nvlist memory layout
X-Git-Url: http://git.dujemihanovic.xyz/html/index.html?a=commitdiff_plain;h=6bbd7e820d3eba14eceb46c3bb42bfad1af6be3f;p=u-boot.git

zfs: Add a comment to clarify nvlist memory layout

Signed-off-by: Phaedrus Leeds <mwleeds@mailtundra.com>
---

diff --git a/fs/zfs/zfs.c b/fs/zfs/zfs.c
index 14779dee32..61d58fce68 100644
--- a/fs/zfs/zfs.c
+++ b/fs/zfs/zfs.c
@@ -1617,6 +1617,11 @@ zfs_nvlist_lookup_nvlist(char *nvlist, char *name)
 							  &size, 0);
 	if (!found)
 		return 0;
+
+	/* Allocate 12 bytes in addition to the nvlist size: One uint32 before the
+	 * nvlist to hold the encoding method, and two zero uint32's after the
+	 * nvlist as the NULL terminator.
+	 */
 	ret = calloc(1, size + 3 * sizeof(uint32_t));
 	if (!ret)
 		return 0;