[lkml]   [2005]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] removes filp_count_lock and changes nr_files type to atomic_t
> > 
> > this patch adds atomic ops where there were none before
> nope... a spinlock/spinunlock contains atomic ops.

unlock usually doesn't but ok

> > for those architectures that need atomics for read (parisc? arm?)
> not today. No atomic needed for read.
> >
> > however.. wouldn't it be better to make this a per cpu variable for
> > write, and for read iterate or do something smart otherwise?
> So on a machine with 256 CPUS, you want to iterate 256 counters ?

you can be smart about this, similar to what ext3 and others do for
similar counters

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-08-25 11:33    [W:0.032 / U:51.444 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site