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Commit 8682164a authored by Evgeniy Dushistov's avatar Evgeniy Dushistov Committed by Linus Torvalds
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[PATCH] ufs: truncate negative to unsigned fix 



During ufs_trunc_direct which is subroutine of ufs::truncate, we try the first
of all free parts of block and then whole blocks.  But we calculate size of
block's part to free in the wrong way.

This may cause bad update of used blocks and fragments statistic, and you can
got report that you have free 32T on 1Gb partition.

Signed-off-by: default avatarEvgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a685e26f

fs/ufs/truncate.c

+2 −2
Original line number Diff line number Diff line
@@ -109,10 +109,10 @@ static int ufs_trunc_direct (struct inode * inode) 
	tmp = fs32_to_cpu(sb, *p);

	if (!tmp )

		ufs_panic (sb, "ufs_trunc_direct", "internal error");

	frag2 -= frag1;

	frag1 = ufs_fragnum (frag1);

	frag2 = ufs_fragnum (frag2);



	ufs_free_fragments (inode, tmp + frag1, frag2 - frag1);

	ufs_free_fragments(inode, tmp + frag1, frag2);

	mark_inode_dirty(inode);

	frag_to_free = tmp + frag1;