Good day,
>>>>> David Chinner (DC) writes:
DC> So that mean's we'll have 2 separate mechanisms for marking
DC> pages as delalloc. XFS uses the BH_delay flag to indicate
DC> that a buffer (block) attached to the page is using delalloc.
well, for blocksize=pagesize we can save 56 bytes on every page.
DC> FWIW, how does this mechanism deal with block size < page size?
DC> Don't you have to track delalloc on a block basis rather than
DC> a page basis?
I'm still thinking how better to deal with that w/o much code duplication.
DC> Ah, that's why you can get away with a page flag - you've ignored
DC> the partial page delay state problem. Any plans to use the
DC> existing method in the future so we will be able to use ext4 delalloc
DC> on machines with a page size larger than 4k?
what do you mean by "exsiting"? BH_delay?
thanks, Alex
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