Andreas Dilger wrote:
On May 07, 2007 13:58 -0700, Andrew Morton wrote:
Final point: it's fairly disappointing that the present implementation is
ext4-only, and extent-only. I do think we should be aiming at an ext4
bitmap-based implementation and an ext3 implementation.
Actually, this is a non-issue. The reason that it is handled for extent-only
is that this is the only way to allocate space in the filesystem without
doing the explicit zeroing. For other filesystems (including ext3 and
Precisely /how/ do you avoid the zeroing issue, for extents?
If I posix_fallocate() 20GB on ext4, it damn well better be zeroed,
otherwise the implementation is broken.
Jeff
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