> net/socket.c:sock_alloc() says that get_empty_inode() is not SMP-safe and
> calls the inode_lock spinlock "decorative". Why? If the big deal is teh
> static last_ino then it is trivial to fix:
The access to last_ino is serialized by spin lock, so that
it is allowed to be not-atomic.
Real bug is inside grow_inodes(), which calls prune_dcache() in turn.
And nobody took care of poor dcache in 2.3, so that it stands now
as bone in throat and all similar operations require big kernel lock.
Alexey
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