btrfs: add a comment describing block reserves

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This is a giant comment at the top of block-rsv.c describing generally
how block reserves work.  It is purely about the block reserves
themselves, and nothing to do with how the actual reservation system
works.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Josef Bacik 2020-02-04 13:18:54 -05:00 • committed by David Sterba

parent 4cdfd93002

commit 734d8c15df

1 changed files with 92 additions and 0 deletions

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fs/btrfs/block-rsv.c

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