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[PATCH] ufs: fix hang during `rm'

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This fixes the code like this:

	bh = sb_find_get_block (sb, tmp + j);
	if ((bh && DATA_BUFFER_USED(bh)) || tmp != fs32_to_cpu(sb, *p)) {
		retry = 1;
		brelse (bh);
		goto next1;
	}
	bforget (bh);

sb_find_get_block() ordinarily returns a buffer_head with b_count>=2, and
this code assume that in case if "b_count>1" buffer is used, so this caused
infinite loop.

(akpm: that is-the-buffer-busy code is incomprehensible.  Good riddance.  Use
of block_truncate_page() seems sane).

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Evgeniy Dushistov
2006-02-03 03:04:06 -08:00
committed by Linus Torvalds
parent e295cfcb29
commit 09114eb8c5
3 changed files with 18 additions and 57 deletions
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2
fs/ufs/inode.c
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@@ -376,7 +376,7 @@ out:
* This function gets the block which contains the fragment.
*/
static int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
{
struct super_block * sb = inode->i_sb;
struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;