Messages in this thread | | | From | Alex Tomas <> | Subject | [RFC] delayed allocation for ext4 | Date | Fri, 22 Dec 2006 23:20:08 +0300 |
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Good day,
probably the previous set of patches (including mballoc/lg) is too large. so, I reworked delayed allocation a bit so that it can be used on top of regular balloc, though it still can be used with extents-enabled files only.
this time series contains just 3 patches:
- booked-page-flag.patch adds PG_booked bit to page->flags. it's used in delayed allocation to mark space is already reserved for page (including possible metadata)
- ext4-block-reservation.patch this is scalable free space management. every time we delay allocation of some page, a space (including metadata) should be reserved
- ext4-delayed-allocation.patch delayed allocation itself, enabled by "delalloc" mount option. extents support is also required. currently it works only with blocksize=pagesize.
all the patches can be used in ftp://ftp.clusterfs.com/pub/people/alex/2.6.20-rc1/
the series passed basic tests like dd/dbench/fsx.
any comments/questions are very welcome.
thanks, Alex - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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