lkml.org 
[lkml]   [2010]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 2/7] Flush block device before reset
    Date
    Make sure we flush block device before freeing all metadata
    during reset ioctl.

    Signed-off-by: Nitin Gupta <ngupta@vflar.org>
    ---
    drivers/staging/ramzswap/ramzswap_drv.c | 11 ++++++++---
    1 files changed, 8 insertions(+), 3 deletions(-)

    diff --git a/drivers/staging/ramzswap/ramzswap_drv.c b/drivers/staging/ramzswap/ramzswap_drv.c
    index 05273c0..3567ee3 100644
    --- a/drivers/staging/ramzswap/ramzswap_drv.c
    +++ b/drivers/staging/ramzswap/ramzswap_drv.c
    @@ -1000,6 +1000,9 @@ static void reset_device(struct ramzswap *rzs)
    unsigned entries_per_page;
    unsigned long num_table_pages, entry = 0;

    + /* Do not accept any new I/O request */
    + rzs->init_done = 0;
    +
    if (rzs->backing_swap && !rzs->num_extents)
    is_backing_blkdev = 1;

    @@ -1073,9 +1076,6 @@ static void reset_device(struct ramzswap *rzs)

    rzs->disksize = 0;
    rzs->memlimit = 0;
    -
    - /* Back to uninitialized state */
    - rzs->init_done = 0;
    }

    static int ramzswap_ioctl_init_device(struct ramzswap *rzs)
    @@ -1276,6 +1276,11 @@ static int ramzswap_ioctl(struct block_device *bdev, fmode_t mode,
    ret = -EBUSY;
    goto out;
    }
    +
    + /* Make sure all pending I/O is finished */
    + if (bdev)
    + fsync_bdev(bdev);
    +
    ret = ramzswap_ioctl_reset_device(rzs);
    break;

    --
    1.6.2.5


    \
     
     \ /
      Last update: 2010-01-28 16:49    [W:0.021 / U:29.720 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site