• J
    f2fs: avoid race condition in handling wait_io · 6a8f8ca5
    Jaegeuk Kim 提交于
    __submit_merged_bio    f2fs_write_end_io        f2fs_write_end_io
                           wait_io = X              wait_io = x
                           complete(X)              complete(X)
                           wait_io = NULL
    wait_for_completion()
    free(X)
                                                     spin_lock(X)
                                                     kernel panic
    
    In order to avoid this, this patch removes the wait_io facility.
    Instead, we can use wait_on_all_pages_writeback(sbi) to wait for end_ios.
    Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>
    6a8f8ca5
data.c 27.5 KB