fs: Make unload_nls() NULL pointer safe

Most call sites of unload_nls() do:
	if (nls)
		unload_nls(nls);

Check the pointer inside unload_nls() like we do in kfree() and
simplify the call sites.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Steve French <[email protected]>
Cc: OGAWA Hirofumi <[email protected]>
Cc: Roman Zippel <[email protected]>
Cc: Dave Kleikamp <[email protected]>
Cc: Petr Vandrovec <[email protected]>
Cc: Anton Altaparmakov <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Thomas Gleixner 2009-08-16 21:05:08 +00:00 • committed by Al Viro
commit 6d729e44a5
12 changed files with 27 additions and 69 deletions

View file

@ -270,7 +270,8 @@ struct nls_table *load_nls(char *charset)
void unload_nls(struct nls_table *nls)
{
module_put(nls->owner);
if (nls)
module_put(nls->owner);
}
static const wchar_t charset2uni[256] = {