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On Thu, Oct 16, 2008 at 08:02:43PM -0400, Theodore Ts'o wrote: > The multiblock allocator needs to be able to release blocks (and issue > a blkdev discard request) when the transaction which freed those > blocks is committed. Previously this was done via a polling mechanism > when blocks are allocated or freed. A much better way of doing things > is to create a jbd2 callback function and attaching the list of blocks > to be freed directly to the transaction structure. Why not use journal commit callback patch from andreas (MID:20080929201752.GN10950@webber.adilger.int http://article.gmane.org/gmane.comp.file-systems.ext4/9148) The patch you sent will allows only one call back to be registered. -aneesh | ||||||||||
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