[sheepdog] [PATCH v4 0/5] add support to non-aglined read/write/create

[Liu Yuan]

On 05/23/2013 11:27 AM, Liu Yuan wrote:
> v4:
>  - do_aligned_write before journaling to avoid double journaling
> 
> v3:
>  - only read first and last sector for write
>  - inline flags_direct
>  - use & algo for aligned_sector
>  - remove constraint for sheepfs
>  - refine test
> 
> Liu Yuan (5):
>   util: add a helper round_down
>   plain store: add support to non-aglined read/write
>   collie: don't round_up vdi size & read/write
>   tests: add a tests/063 to test unaligned read/write/create
>   sheepfs: remove the align constraint
> 
>  collie/vdi.c        |   12 +------
>  include/util.h      |    3 +-
>  sheep/journal.c     |    6 ++--
>  sheep/plain_store.c |  100 +++++++++++++++++++++++++++++++++++++++++++++++----
>  sheepfs/volume.c    |    5 ---
>  tests/062           |   44 +++++++++++++++++++++++
>  tests/062.out       |   10 ++++++
>  tests/group         |    1 +
>  8 files changed, 154 insertions(+), 27 deletions(-)
>  create mode 100755 tests/062
>  create mode 100644 tests/062.out
> 

I'm wondering, if dropping O_DIRECT for unaligned read/write the
simplest and more suitable method? This just sacrifice more memory but
result a much simpler code to maintain.

Thanks,
Yuan