Dave Chinner <david@xxxxxxxxxxxxx> writes: > From: Eric Dumazet <eric.dumazet@xxxxxxxxx> > > new_inode() dirties a contended cache line to get increasing > inode numbers. This limits performance on workloads that cause > significant parallel inode allocation. > > Solve this problem by using a per_cpu variable fed by the shared > last_ino in batches of 1024 allocations. This reduces contention on > the shared last_ino, and give same spreading ino numbers than before > (i.e. same wraparound after 2^32 allocations). This doesn't help for Unix disk file systems, so not fully sure why you need it for XFS. But looks reasonable, although it would be better to simply fix sockets/pipes/etc. to not allocate an inode numbers. Acked-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
