ocfs2: New slot map format

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The old slot map had a few limitations:

- It was limited to one block, so the maximum slot count was 255.
- Each slot was signed 16bits, limiting node numbers to INT16_MAX.
- An empty slot was marked by the magic 0xFFFF (-1).

The new slot map format provides 32bit node numbers (UINT32_MAX), a
separate space to mark a slot in use, and extra room to grow.  The slot
map is now bounded by i_size, not a block.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

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Joel Becker 2008-02-01 12:06:54 -08:00 • committed by Mark Fasheh

parent fb86b1f071

commit 386a2ef857

3 changed files with 133 additions and 15 deletions

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7

fs/ocfs2/ocfs2.h

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31

fs/ocfs2/ocfs2_fs.h

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110

fs/ocfs2/slot_map.c

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