Hi,
The free bitmap is called from fill_segs(). The page for free bitmap

may be used recursively. We have to care this point.
lock_page(bitmap page (e.g. index == 3))

  ->writepage(bitmap page)

    tux3_get_block()

      balloc() (allocate blocks for that bitmap page)

        /* we are starting to find free block on bitmap */

	while (end of page)

           blockread(bitmap page)

	     lock_page(bitmap page (index == 3))
Current blockread() have the above deadlock. This patchset is including

the hack to avoid this. Later, we should revisit blockread() to fix

properly.
Second one is dleaf_merge() fix. Now, it don't care about

MAX_GROUP_ENTRIES at all. This fixes it.
	static-http://userweb.kernel.org/~hirofumi/tux3/
Please review those.

--

OGAWA Hirofumi 
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