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[PATCH] ufs: truncate negative to unsigned fix

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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: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Evgeniy Dushistov 2007-01-29 13:19:55 -08:00 committed by Linus Torvalds
parent a685e26fff
commit 8682164a66
1 changed files with 2 additions and 2 deletions
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4
fs/ufs/truncate.c
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@ -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;