On Tue, Jun 16, 2015 at 06:53:13PM -0400, Tejun Heo wrote: > For ordered and writeback data modes, all data IOs go through > ext4_io_submit. This patch adds cgroup writeback support by invoking > wbc_init_bio() from io_submit_init_bio() and wbc_account_io() in > io_submit_add_bh(). Journal data which is written by jbd2 worker is > left alone by this patch and will always be written out from the root > cgroup. > > ext4_fill_super() is updated to set MS_CGROUPWB when data mode is > either ordered or writeback. In journaled data mode, most IOs become > synchronous through the journal and enabling cgroup writeback support > doesn't make much sense or difference. Journaled data mode is left > alone. > > Lightly tested with sequential data write workload. Behaves as > expected. > > v2: Updated for MS_CGROUPWB -> SB_I_CGROUPWB. > > Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> > Cc: "Theodore Ts'o" <tytso@xxxxxxx> > Cc: Andreas Dilger <adilger.kernel@xxxxxxxxx> > Cc: linux-ext4@xxxxxxxxxxxxxxx Thanks, applied. - Ted -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
