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udf: fix udf_add_free_space

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In commit 742ba02a51 (udf: create common
function for changing free space counter) by accident I reversed safety
condition which lead to null pointer dereference in case of media error and
wrong counting of free space in normal situation

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Jan Kara <jack@suse.cz>
Acked-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marcin Slusarz 2008-02-13 15:03:33 -08:00 committed by Linus Torvalds
parent e28d80f182
commit cba44359d1
1 changed files with 1 additions and 1 deletions
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2
fs/udf/balloc.c
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@ -145,7 +145,7 @@ static bool udf_add_free_space(struct udf_sb_info *sbi,
{ {
struct logicalVolIntegrityDesc *lvid; struct logicalVolIntegrityDesc *lvid;
if (sbi->s_lvid_bh) if (sbi->s_lvid_bh == NULL)
return false; return false;
lvid = (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data; lvid = (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;