Messages in this thread | | | Date | Fri, 21 May 2010 11:15:18 -0400 | From | Christoph Hellwig <> | Subject | Re: [RFC] new ->perform_write fop |
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Nick, what exactly is the problem with the reserve + allocate design?
In a delalloc filesystem (which is all those that will care about high performance large writes) the write path fundamentally consists of those two operations. Getting rid of the get_blocks mess and replacing it with a dedicated operations vector will simplify things a lot.
Punching holes is a rather problematic operation, and as mentioned not actually implemented for most filesystems - just decrementing counters on errors increases the chances that our error handling will actually work massively.
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