Theodore Ts'o 1f94533d9c ext4: fix a BUG_ON crash by checking that page has buffers attached to it
In ext4_num_dirty_pages() we were calling page_buffers() before
checking to see if the page actually had pages attached to it; this
would cause a BUG check crash in the inline function page_buffers().

Thanks to Markus Trippelsdorf for reporting this bug.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-09-30 22:57:41 -04:00
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