Re: [RFC 1/2] ext3: enlarge blocksize and fix rec_len overflow

[Andreas Dilger]

On Jun 28, 2006  17:50 +0200, Johann Lombardi wrote:
> ext2/ext3_dir_entry_2 has a 16-bit entry(rec_len) and it would overflow
> with 64KB blocksize.  This patch prevent from overflow by limiting
> rec_len to 65532.

Having a max rec_len of 65532 is rather unfortunate, since the dir
blocks always need to filled with dir entries.  65536 - 65532 = 4, and
the minimum ext3_dir_entry size is 8 bytes.  I would instead make this
maybe 64 bytes less so that there is room for a filename in the "tail"
dir_entry.


Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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