tree ee19b6a6c4e33c4b9328265c1f2943b69c022721
parent c3dc8929286e3f3b46d4d014c5b7aeecb416f4e0
author Colin Cross <ccross@android.com> 1353449259 -0800
committer Colin Cross <ccross@android.com> 1354137802 -0800

make_ext4fs: fix dentry padding when dentry size is 4088 or 4092

When the total dentry size is N * 4096 - 4 or N * 4096 - 8, there is
not enough room in the block to insert an extra padding dentry.
Instead, switch to always padding the previous dentry out to the end
of the block, which matches what the kernel does when creating new
directory entries.

Also fix dentry_size to return the size of all the dentries
without the padding, the len + 8 padding is incorrect, and the
DIV_ROUND_UP will round up to the correct number of blocks.

Change-Id: If11f90e4ee172c135a0eae2a50b8be213e2dd0dc