tree d9dc5bca94748d4173a7783e963d20b5a75f8db8
parent 393418676a7602e1d7d3f6e560159c65c8cbd50e
author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 1231210195 -0500
committer Theodore Ts'o <tytso@mit.edu> 1231210195 -0500

ext4: Use new buffer_head flag to check uninit group bitmaps initialization

For uninit block group, the on-disk bitmap is not initialized. That
implies we cannot depend on the uptodate flag on the bitmap
buffer_head to find bitmap validity.  Use a new buffer_head flag which
would be set after we properly initialize the bitmap.  This also
prevents (re-)initializing the uninit group bitmap every time we call 
ext4_read_block_bitmap().

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org