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fs: Make unload_nls() NULL pointer safe

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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 <tglx@linutronix.de>
Cc: Steve French <sfrench@us.ibm.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
Cc: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Thomas Gleixner 2009-08-16 21:05:08 +00:00 • committed by Al Viro
parent 4504230a71
commit 6d729e44a5
12 changed files with 27 additions and 69 deletions
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10
fs/smbfs/inode.c
View file

@ -459,14 +459,8 @@ smb_show_options(struct seq_file *s, struct vfsmount *m)
static void
smb_unload_nls(struct smb_sb_info *server)
{
if (server->remote_nls) {
unload_nls(server->remote_nls);
server->remote_nls = NULL;
}
if (server->local_nls) {
unload_nls(server->local_nls);
server->local_nls = NULL;
}
unload_nls(server->remote_nls);
unload_nls(server->local_nls);
}
static void