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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-17 16:57:47 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-17 16:57:47 -0700 |
commit | 7ad67ca5534ee7c958559c4ad610f05c4578e361 (patch) | |
tree | dc6b6a8a6b70b5f25b07bcdc06d8e77e705f6822 /include/linux/memcontrol.h | |
parent | Merge tag 'for-5.4/libata-2019-09-15' of git://git.kernel.dk/linux-block (diff) | |
parent | null_blk: format pr_* logs with pr_fmt (diff) | |
download | linux-dev-7ad67ca5534ee7c958559c4ad610f05c4578e361.tar.xz linux-dev-7ad67ca5534ee7c958559c4ad610f05c4578e361.zip |
Merge tag 'for-5.4/block-2019-09-16' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe:
- Two NVMe pull requests:
- ana log parse fix from Anton
- nvme quirks support for Apple devices from Ben
- fix missing bio completion tracing for multipath stack devices
from Hannes and Mikhail
- IP TOS settings for nvme rdma and tcp transports from Israel
- rq_dma_dir cleanups from Israel
- tracing for Get LBA Status command from Minwoo
- Some nvme-tcp cleanups from Minwoo, Potnuri and Myself
- Some consolidation between the fabrics transports for handling
the CAP register
- reset race with ns scanning fix for fabrics (move fabrics
commands to a dedicated request queue with a different lifetime
from the admin request queue)."
- controller reset and namespace scan races fixes
- nvme discovery log change uevent support
- naming improvements from Keith
- multiple discovery controllers reject fix from James
- some regular cleanups from various people
- Series fixing (and re-fixing) null_blk debug printing and nr_devices
checks (André)
- A few pull requests from Song, with fixes from Andy, Guoqing,
Guilherme, Neil, Nigel, and Yufen.
- REQ_OP_ZONE_RESET_ALL support (Chaitanya)
- Bio merge handling unification (Christoph)
- Pick default elevator correctly for devices with special needs
(Damien)
- Block stats fixes (Hou)
- Timeout and support devices nbd fixes (Mike)
- Series fixing races around elevator switching and device add/remove
(Ming)
- sed-opal cleanups (Revanth)
- Per device weight support for BFQ (Fam)
- Support for blk-iocost, a new model that can properly account cost of
IO workloads. (Tejun)
- blk-cgroup writeback fixes (Tejun)
- paride queue init fixes (zhengbin)
- blk_set_runtime_active() cleanup (Stanley)
- Block segment mapping optimizations (Bart)
- lightnvm fixes (Hans/Minwoo/YueHaibing)
- Various little fixes and cleanups
* tag 'for-5.4/block-2019-09-16' of git://git.kernel.dk/linux-block: (186 commits)
null_blk: format pr_* logs with pr_fmt
null_blk: match the type of parameter nr_devices
null_blk: do not fail the module load with zero devices
block: also check RQF_STATS in blk_mq_need_time_stamp()
block: make rq sector size accessible for block stats
bfq: Fix bfq linkage error
raid5: use bio_end_sector in r5_next_bio
raid5: remove STRIPE_OPS_REQ_PENDING
md: add feature flag MD_FEATURE_RAID0_LAYOUT
md/raid0: avoid RAID0 data corruption due to layout confusion.
raid5: don't set STRIPE_HANDLE to stripe which is in batch list
raid5: don't increment read_errors on EILSEQ return
nvmet: fix a wrong error status returned in error log page
nvme: send discovery log page change events to userspace
nvme: add uevent variables for controller devices
nvme: enable aen regardless of the presence of I/O queues
nvme-fabrics: allow discovery subsystems accept a kato
nvmet: Use PTR_ERR_OR_ZERO() in nvmet_init_discovery()
nvme: Remove redundant assignment of cq vector
nvme: Assign subsys instance from first ctrl
...
Diffstat (limited to 'include/linux/memcontrol.h')
-rw-r--r-- | include/linux/memcontrol.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 2cd4359cb38c..ad8f1a397ae4 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -184,6 +184,23 @@ struct memcg_padding { #endif /* + * Remember four most recent foreign writebacks with dirty pages in this + * cgroup. Inode sharing is expected to be uncommon and, even if we miss + * one in a given round, we're likely to catch it later if it keeps + * foreign-dirtying, so a fairly low count should be enough. + * + * See mem_cgroup_track_foreign_dirty_slowpath() for details. + */ +#define MEMCG_CGWB_FRN_CNT 4 + +struct memcg_cgwb_frn { + u64 bdi_id; /* bdi->id of the foreign inode */ + int memcg_id; /* memcg->css.id of foreign inode */ + u64 at; /* jiffies_64 at the time of dirtying */ + struct wb_completion done; /* tracks in-flight foreign writebacks */ +}; + +/* * The memory controller data structure. The memory controller controls both * page cache and RSS per cgroup. We would eventually like to provide * statistics based on the statistics developed by Rik Van Riel for clock-pro, @@ -307,6 +324,7 @@ struct mem_cgroup { #ifdef CONFIG_CGROUP_WRITEBACK struct list_head cgwb_list; struct wb_domain cgwb_domain; + struct memcg_cgwb_frn cgwb_frn[MEMCG_CGWB_FRN_CNT]; #endif /* List of events which userspace want to receive */ @@ -1237,6 +1255,18 @@ void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, unsigned long *pheadroom, unsigned long *pdirty, unsigned long *pwriteback); +void mem_cgroup_track_foreign_dirty_slowpath(struct page *page, + struct bdi_writeback *wb); + +static inline void mem_cgroup_track_foreign_dirty(struct page *page, + struct bdi_writeback *wb) +{ + if (unlikely(&page->mem_cgroup->css != wb->memcg_css)) + mem_cgroup_track_foreign_dirty_slowpath(page, wb); +} + +void mem_cgroup_flush_foreign(struct bdi_writeback *wb); + #else /* CONFIG_CGROUP_WRITEBACK */ static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb) @@ -1252,6 +1282,15 @@ static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb, { } +static inline void mem_cgroup_track_foreign_dirty(struct page *page, + struct bdi_writeback *wb) +{ +} + +static inline void mem_cgroup_flush_foreign(struct bdi_writeback *wb) +{ +} + #endif /* CONFIG_CGROUP_WRITEBACK */ struct sock; |