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nilfs2: fix infinite loop in nilfs_palloc_freev function

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After having applied commit 9954e7af14 ("nilfs2: add free
entries count only if clear bit operation succeeded"), a free routine
of nilfs came to fall into an infinite loop, outputting the same
message endlessly:

 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed
 nilfs_palloc_freev: entry number 29497 already freed ...

That patch broke the routine so that a loop counter is never updated
in an abnormal state.  This fixes the regression.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2011-05-10 20:59:34 +09:00
parent 693d92a1bb
commit 349dbc3669
1 changed files with 1 additions and 1 deletions
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2
fs/nilfs2/alloc.c
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@ -646,7 +646,7 @@ int nilfs_palloc_freev(struct inode *inode, __u64 *entry_nrs, size_t nitems)
unsigned long group, group_offset; unsigned long group, group_offset;
int i, j, n, ret; int i, j, n, ret;
for (i = 0; i < nitems; i += n) { for (i = 0; i < nitems; i = j) {
group = nilfs_palloc_group(inode, entry_nrs[i], &group_offset); group = nilfs_palloc_group(inode, entry_nrs[i], &group_offset);
ret = nilfs_palloc_get_desc_block(inode, group, 0, &desc_bh); ret = nilfs_palloc_get_desc_block(inode, group, 0, &desc_bh);
if (ret < 0) if (ret < 0)