• Qu Wenruo's avatar
    btrfs: cleanup for open-coded alignment · fda2832f
    Qu Wenruo authored
    Though most of the btrfs codes are using ALIGN macro for page alignment,
    there are still some codes using open-coded alignment like the
    following:
    ------
            u64 mask = ((u64)root->stripesize - 1);
            u64 ret = (val + mask) & ~mask;
    ------
    Or even hidden one:
    ------
            num_bytes = (end - start + blocksize) & ~(blocksize - 1);
    ------
    
    Sometimes these open-coded alignment is not so easy to understand for
    newbie like me.
    
    This commit changes the open-coded alignment to the ALIGN macro for a
    better readability.
    
    Also there is a previous patch from David Sterba with similar changes,
    but the patch is for 3.2 kernel and seems not merged.
    http://www.spinics.net/lists/linux-btrfs/msg12747.html
    
    Cc: David Sterba <dave@jikos.cz>
    Signed-off-by: default avatarQu Wenruo <quwenruo@cn.fujitsu.com>
    Signed-off-by: default avatarJosef Bacik <jbacik@fusionio.com>
    fda2832f
extent_io.c 124 KB