• Nick Piggin's avatar
    fs: fs_struct use seqlock · c28cc364
    Nick Piggin authored
    Use a seqlock in the fs_struct to enable us to take an atomic copy of the
    complete cwd and root paths. Use this in the RCU lookup path to avoid a
    thread-shared spinlock in RCU lookup operations.
    
    Multi-threaded apps may now perform path lookups with scalability matching
    multi-process apps. Operations such as stat(2) become very scalable for
    multi-threaded workload.
    Signed-off-by: default avatarNick Piggin <npiggin@kernel.dk>
    c28cc364
fs_struct.h 1.19 KB