• Tetsuo Handa's avatar
    fs: ratelimit __find_get_block_slow() failure message. · 43636c80
    Tetsuo Handa authored
    When something let __find_get_block_slow() hit all_mapped path, it calls
    printk() for 100+ times per a second. But there is no need to print same
    message with such high frequency; it is just asking for stall warning, or
    at least bloating log files.
      [  399.866302][T15342] __find_get_block_slow() failed. block=1, b_blocknr=8
      [  399.873324][T15342] b_state=0x00000029, b_size=512
      [  399.878403][T15342] device loop0 blocksize: 4096
      [  399.883296][T15342] __find_get_block_slow() failed. block=1, b_blocknr=8
      [  399.890400][T15342] b_state=0x00000029, b_size=512
      [  399.895595][T15342] device loop0 blocksize: 4096
      [  399.900556][T15342] __find_get_block_slow() failed. block=1, b_blocknr=8
      [  399.907471][T15342] b_state=0x00000029, b_size=512
      [  399.912506][T15342] device loop0 blocksize: 4096
    This patch reduces frequency to up to once per a second, in addition to
    concatenating three lines into one.
      [  399.866302][T15342] __find_get_block_slow() failed. block=1, b_blocknr=8, b_state=0x00000029, b_size=512, device loop0 blocksize: 4096
    Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
    Reviewed-by: default avatarJan Kara <jack@suse.cz>
    Cc: Dmitry Vyukov <dvyukov@google.com>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
buffer.c 90 KB