• Omar Sandoval's avatar
    btrfs: get rid of unique workqueue helper functions · a0cac0ec
    Omar Sandoval authored
    Commit 9e0af237
    
     ("Btrfs: fix task hang under heavy compressed
    write") worked around the issue that a recycled work item could get a
    false dependency on the original work item due to how the workqueue code
    guarantees non-reentrancy. It did so by giving different work functions
    to different types of work.
    
    However, the fixes in the previous few patches are more complete, as
    they prevent a work item from being recycled at all (except for a tiny
    window that the kernel workqueue code handles for us). This obsoletes
    the previous fix, so we don't need the unique helpers for correctness.
    The only other reason to keep them would be so they show up in stack
    traces, but they always seem to be optimized to a tail call, so they
    don't show up anyways. So, let's just get rid of the extra indirection.
    
    While we're here, rename normal_work_helper() to the more informative
    btrfs_work_helper().
    
    Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
    Reviewed-by: default avatarFilipe Manana <fdmanana@suse.com>
    Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
    Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
    Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
    a0cac0ec