• Jaegeuk Kim's avatar
    f2fs: consider fallocated space for SEEK_DATA · 7f7670fe
    Jaegeuk Kim authored
    If an amount of data are allocated though fallocate and user writes a couple of
    data among the space, f2fs should return the data offset made by user when
    SEEK_DATA is requested.
    For example, (N: NEW_ADDR by fallocate, X: NEW_ADDR by user)
    1) fallocate 0 ~ 10MB
    f -> N N N N N N N N N N N N ... N
    2) write 4KB at 5MB offset
    f -> N N N N N X N N N N N N ... N
    3) SEEK_DATA from 0 should return 5MB offset
    So, this patch adds a routine to search the first dirty page to handle that.
    Then, the SEEK_DATA flow skips NEW_ADDR offsets until any dirty page is found.
    Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>