• Jaegeuk Kim's avatar
    f2fs: clarify and enhance the f2fs_gc flow · 43727527
    Jaegeuk Kim authored
    This patch makes clearer the ambiguous f2fs_gc flow as follows.
    
    1. Remove intermediate checkpoint condition during f2fs_gc
     (i.e., should_do_checkpoint() and GC_BLOCKED)
    
    2. Remove unnecessary return values of f2fs_gc because of #1.
     (i.e., GC_NODE, GC_OK, etc)
    
    3. Simplify write_checkpoint() because of #2.
    
    4. Clarify the main f2fs_gc flow.
     o monitor how many freed sections during one iteration of do_garbage_collect().
     o do GC more without checkpoints if we can't get enough free sections.
     o do checkpoint once we've got enough free sections through forground GCs.
    
    5. Adopt thread-logging (Slack-Space-Recycle) scheme more aggressively on data
      log types. See. get_ssr_segement()
    Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>
    43727527
checkpoint.c 19.8 KB