Re: [PATCH] guard mm->rss with page_table_lock (241p11)

[David S. Miller]

David Howells writes:
 > Would it not be better to use some sort of atomic add/subtract/clear operation
 > rather than a spinlock? (Which would also give you fewer atomic memory access
 > cycles).

Please see older threads about this, it has been discussed to death
already (hint: sizeof(atomic_t), sizeof(unsigned long)).

Later,
David S. Miller
[e-mail]