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dcache: Replace simple_strtoul with kstrtoul in set_dhash_entries

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Replace simple_strtoul() with the recommended kstrtoul() for parsing the
'dhash_entries=' boot parameter.

Check the return value of kstrtoul() and reject invalid values. This
adds error handling while preserving behavior for existing values, and
removes use of the deprecated simple_strtoul() helper.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20251216145236.44520-2-thorsten.blum@linux.dev
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Thorsten Blum 2025-12-16 15:52:37 +01:00 • committed by Christian Brauner
parent 63ad216fbf
commit b29a0a37f4
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1 changed files with 1 additions and 4 deletions
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5
fs/dcache.c
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@ -3227,10 +3227,7 @@ EXPORT_SYMBOL(d_parent_ino);
static __initdata unsigned long dhash_entries;
static int __init set_dhash_entries(char *str)
{
if (!str)
return 0;
dhash_entries = simple_strtoul(str, &str, 0);
return 1;
return kstrtoul(str, 0, &dhash_entries) == 0;
}
__setup("dhash_entries=", set_dhash_entries);