On Thu, 16 Nov 2006 01:48:09 -0800 Andrew Morton <akpm@xxxxxxxx> wrote: > On Thu, 16 Nov 2006 12:37:17 +0300 > Alex Tomas <alex@xxxxxxxxxxxxx> wrote: > > > >>>>> Andrew Morton (AM) writes: > > > > AM> What lock protects the fields in struct ext[234]_reserve_window from being > > AM> concurrently modified by two CPUs? None, it seems. Ditto > > AM> ext[234]_reserve_window_node. i_mutex will cover it for write(), but not > > AM> for pageout over a file hole. If we end up with a zero- or negative-sized > > AM> window then odd things might happen. > > > > truncate_mutex? > > > > yes. hmm. by which I mean "ext2 doesn't have a truncate_mutex". - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
