On Sun, May 05, 2019 at 08:09:01PM +0800, Jiufei Xue wrote:
>
>
> On 2019/4/30 下午6:32, Sasha Levin wrote:
> > Hi,
> >
> > [This is an automated email]
> >
> > This commit has been processed because it contains a -stable tag.
> > The stable tag indicates that it's relevant for the following trees: all.
> >
> > The bot has tested the following trees: v5.0.10, v4.19.37, v4.14.114, v4.9.171, v4.4.179, v3.18.139.
> >
> > v5.0.10: Build OK!
> > v4.19.37: Build OK!
> > v4.14.114: Build OK!
> > v4.9.171: Failed to apply! Possible dependencies:
> > 113c60970cf4 ("x86/intel_rdt: Add Haswell feature discovery")
> > 2264d9c74dda ("x86/intel_rdt: Build structures for each resource based on cache topology")
> > 3ee7e8697d58 ("bdi: Fix another oops in wb_workfn()")
> > 4f341a5e4844 ("x86/intel_rdt: Add scheduler hook")
> > 5318ce7d4686 ("bdi: Shutdown writeback on all cgwbs in cgwb_bdi_destroy()")
> > 5b825c3af1d8 ("sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>")
> > 5dd43ce2f69d ("sched/wait: Split out the wait_bit*() APIs from <linux/wait.h> into <linux/wait_bit.h>")
> > 5ff193fbde20 ("x86/intel_rdt: Add basic resctrl filesystem support")
> > 60cf5e101fd4 ("x86/intel_rdt: Add mkdir to resctrl file system")
> > 60ec2440c63d ("x86/intel_rdt: Add schemata file")
> > 6b2bb7265f0b ("sched/wait: Introduce wait_var_event()")
> > 78e99b4a2b9a ("x86/intel_rdt: Add CONFIG, Makefile, and basic initialization")
> > 7fc5854f8c6e ("writeback: synchronize sync(2) against cgroup writeback membership switches")
> > 8236b0ae31c8 ("bdi: wake up concurrent wb_shutdown() callers.")
> > c1c7c3f9d6bb ("x86/intel_rdt: Pick up L3/L2 RDT parameters from CPUID")
> >
> > v4.4.179: Failed to apply! Possible dependencies:
> > 0007bccc3cfd ("x86: Replace RDRAND forced-reseed with simple sanity check")
> > 113c60970cf4 ("x86/intel_rdt: Add Haswell feature discovery")
> > 1b74dde7c47c ("x86/cpu: Convert printk(KERN_<LEVEL> ...) to pr_<level>(...)")
> > 27f6d22b037b ("perf/x86: Move perf_event.h to its new home")
> > 39b0332a2158 ("perf/x86: Move perf_event_amd.c ........... => x86/events/amd/core.c")
> > 3ee7e8697d58 ("bdi: Fix another oops in wb_workfn()")
> > 4f341a5e4844 ("x86/intel_rdt: Add scheduler hook")
> > 5318ce7d4686 ("bdi: Shutdown writeback on all cgwbs in cgwb_bdi_destroy()")
> > 5b825c3af1d8 ("sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>")
> > 5dd43ce2f69d ("sched/wait: Split out the wait_bit*() APIs from <linux/wait.h> into <linux/wait_bit.h>")
> > 6b2bb7265f0b ("sched/wait: Introduce wait_var_event()")
> > 724697648eec ("perf/x86: Use INST_RETIRED.PREC_DIST for cycles: ppp")
> > 7fc5854f8c6e ("writeback: synchronize sync(2) against cgroup writeback membership switches")
> > 8236b0ae31c8 ("bdi: wake up concurrent wb_shutdown() callers.")
> > fa9cbf320e99 ("perf/x86: Move perf_event.c ............... => x86/events/core.c")
> >
> > v3.18.139: Failed to apply! Possible dependencies:
> > 0ae45f63d4ef ("vfs: add support for a lazytime mount option")
> > 4452226ea276 ("writeback: move backing_dev_info->state into bdi_writeback")
> > 52ebea749aae ("writeback: make backing_dev_info host cgroup-specific bdi_writebacks")
> > 66114cad64bf ("writeback: separate out include/linux/backing-dev-defs.h")
> > 682aa8e1a6a1 ("writeback: implement unlocked_inode_to_wb transaction and use it for stat updates")
> > 87e1d789bf55 ("writeback: implement [locked_]inode_to_wb_and_lock_list()")
> > a3816ab0e8fe ("fs: Convert show_fdinfo functions to void")
> > b16b1deb553a ("writeback: make writeback_control track the inode being written back")
> > b4caecd48005 ("fs: introduce f_op->mmap_capabilities for nommu mmap support")
> > bafc0dba1e20 ("buffer, writeback: make __block_write_full_page() honor cgroup writeback")
> >
> >
> > How should we proceed with this patch?
> >
> > --
>
> I am sorry that I forgot to mention that the patch should be applied to stable
> since v4.4.
>
> v4.4.179 and v4.9.171 depend on the commit 7fc5854f8c6e ("writeback: synchronize sync(2) against cgroup writeback membership switches").
> On these two versions we can just inc isw_nr_in_flight before return.
Thanks, I've just backported 7fc5854f8c6e to those kernels now and then
this applied.
greg k-h
