tree 7e7644a2fd48586ec2f455e56525565174798e4a
parent e21675d4b63975d09eb75c443c48ebe663d23e18
author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 1231209379 -0500
committer Theodore Ts'o <tytso@mit.edu> 1231209379 -0500

ext4: Use EXT4_GROUP_INFO_NEED_INIT_BIT during resize

The new groups added during resize are flagged as
need_init group. Make sure we properly initialize these
groups. When we have block size < page size and we are adding
new groups the page may still be marked uptodate even though
we haven't initialized the group. While forcing the init
of buddy cache we need to make sure other groups part of the
same page of buddy cache is not using the cache.
group_info->alloc_sem is added to ensure the same.

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