• Chao Yu's avatar
    f2fs: support in batch fzero in dnode page · 6e961949
    Chao Yu authored
    This patch tries to speedup fzero_range by making space preallocation and
    address removal of blocks in one dnode page as in batch operation.
    In virtual machine, with zram driver:
    dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=4096
    time xfs_io -f /mnt/f2fs/file -c "fzero 0 4096M"
    real	0m3.276s
    user	0m0.008s
    sys	0m3.260s
    real	0m1.568s
    user	0m0.000s
    sys	0m1.564s
    Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
    [Jaegeuk Kim: consider ENOSPC case]
    Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
file.c 47.2 KB