Eric Lee / smarc-fsl-linux-kernel

24 Nov, 2013

1 commit

  • 003b5c571   block: Convert drivers to immutable biovecs ... Browse Code »

    Now that we've got a mechanism for immutable biovecs -
    bi_iter.bi_bvec_done - we need to convert drivers to use primitives that
    respect it instead of using the bvec array directly.

    Signed-off-by: Kent Overstreet
    Cc: Jens Axboe
    Cc: NeilBrown
    Cc: Alasdair Kergon
    Cc: dm-devel@redhat.com

    Kent Overstreet
     

29 May, 2011

1 commit

  • bda8efec5   dm io: use fixed initial mempool size ... Browse Code »

    Replace the arbitrary calculation of an initial io struct mempool size
    with a constant.

    The code calculated the number of reserved structures based on the request
    size and used a "magic" multiplication constant of 4. This patch changes
    it to reserve a fixed number - itself still chosen quite arbitrarily.
    Further testing might show if there is a better number to choose.

    Note that if there is no memory pressure, we can still allocate an
    arbitrary number of "struct io" structures. One structure is enough to
    process the whole request.

    Signed-off-by: Mikulas Patocka
    Signed-off-by: Alasdair G Kergon

    Mikulas Patocka
     

06 Mar, 2010

1 commit

  • 924e600d4   dm: eliminate some holes data structures ... Browse Code »

    Eliminate a 4-byte hole in 'struct dm_io_memory' by moving 'offset' above the
    'ptr' to which it applies (size reduced from 24 to 16 bytes). And by
    association, 1-4 byte hole is eliminated in 'struct dm_io_request' (size
    reduced from 56 to 48 bytes).

    Eliminate all 6 4-byte holes and 1 cache-line in 'struct dm_snapshot' (size
    reduced from 392 to 368 bytes).

    Signed-off-by: Mike Snitzer
    Signed-off-by: Alasdair G Kergon

    Mike Snitzer
     

25 Apr, 2008

1 commit