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fs: Make unload_nls() NULL pointer safe

Browse source 
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
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6
fs/hfsplus/super.c
View file

@ -229,8 +229,7 @@ static void hfsplus_put_super(struct super_block *sb)
iput(HFSPLUS_SB(sb).alloc_file);
iput(HFSPLUS_SB(sb).hidden_dir);
brelse(HFSPLUS_SB(sb).s_vhbh);
if (HFSPLUS_SB(sb).nls)
unload_nls(HFSPLUS_SB(sb).nls);
unload_nls(HFSPLUS_SB(sb).nls);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
@ -464,8 +463,7 @@ out:
cleanup:
hfsplus_put_super(sb);
if (nls)
unload_nls(nls);
unload_nls(nls);
return err;
}