On Wed, 30 Nov 2011, Alasdair G Kergon wrote: > On Wed, Nov 30, 2011 at 01:33:32PM +0000, Alasdair G Kergon wrote: > > Have I missed something in this > > reasoning, Mikulas? > > Ah - counter-example: mmap? > So sync might indeed be required to block on the filesystem iff there > are newly-dirtied pages. > > Alasdair On non-journaled filesystem, both write and mmap can create dirty pages when suspended. On ext4 I actually tested mmap, but it blocks any writes to mmaped pages while suspended. Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
