• Theodore Ts'o's avatar
    ext4: add prefetch_block_bitmaps mount option · 3d392b26
    Theodore Ts'o authored
    For file systems where we can afford to keep the buddy bitmaps cached,
    we can speed up initial writes to large file systems by starting to
    load the block allocation bitmaps as soon as the file system is
    mounted.  This won't work well for _super_ large file systems, or
    memory constrained systems, so we only enable this when it is
    requested via a mount option.
    
    Addresses-Google-Bug: 159488342
    Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
    Reviewed-by: default avatarAndreas Dilger <adilger@dilger.ca>
    3d392b26
super.c 181 KB