Coly Li f9c32a5a90 bcache: handle btree node memory allocation properly for bucket size > 8MB ... Currently the bcache internal btree node occupies a whole bucket. When loading the btree node from cache device into memory, mca_data_alloc() will call bch_btree_keys_alloc() to allocate memory for the whole bucket size, ilog2(b->c->btree_pages) is send to bch_btree_keys_alloc() as the parameter 'page_order'. c->btree_pages is set as bucket_pages() in bch_cache_set_alloc(), for bucket size > 8MB, ilog2(b->c->btree_pages) is 12 for 4KB page size. By default the maximum page order __get_free_pages() accepts is MAX_ORDER (11), in this condition bch_btree_keys_alloc() will always fail. Because of other over-page-order allocation failure fails the cache device registration, such btree node allocation failure wasn't observed during runtime. After other blocking page allocation failures for bucket size > 8MB, this btree node allocation issue may trigger potentical risk e.g. infinite dead-loop to retry btree node allocation after failure. This patch fixes the potential problem by setting c->btree_pages to meta_bucket_pages() in bch_cache_set_alloc(). In the condition that bucket size > 8MB, meta_bucket_pages() will always return a number which won't exceed the maximum page order of the buddy allocator. Signed-off-by: Coly Li <colyli@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2020-07-25 07:38:20 -06:00
..
bcache	bcache: handle btree node memory allocation properly for bucket size > 8MB	2020-07-25 07:38:20 -06:00
persistent-data	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
dm-bio-prison-v1.c	dm bio prison: replace spin_lock_irqsave with spin_lock_irq	2019-11-05 14:53:03 -05:00
dm-bio-prison-v1.h
dm-bio-prison-v2.c	dm bio prison v2: use true/false for bool variable	2020-01-07 12:07:08 -05:00
dm-bio-prison-v2.h
dm-bio-record.h	dm bio record: save/restore bi_end_io and bi_integrity	2020-03-03 10:02:46 -05:00
dm-bufio.c	- Largest change for this cycle is the DM zoned target's metadata	2020-06-05 15:45:03 -07:00
dm-builtin.c
dm-cache-background-tracker.c
dm-cache-background-tracker.h
dm-cache-block-types.h
dm-cache-metadata.c
dm-cache-metadata.h
dm-cache-policy-internal.h
dm-cache-policy-smq.c
dm-cache-policy.c
dm-cache-policy.h
dm-cache-target.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-clone-metadata.c	dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()	2020-03-27 14:42:51 -04:00
dm-clone-metadata.h	dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()	2020-03-27 14:42:51 -04:00
dm-clone-target.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-core.h
dm-crypt.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-delay.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-dust.c	dm dust: change ret to r in dust_map_write	2020-01-07 11:43:36 -05:00
dm-ebs-target.c	dm ebs: use dm_bufio_forget_buffers	2020-06-05 14:59:42 -04:00
dm-era-target.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-exception-store.c
dm-exception-store.h
dm-flakey.c	block: rework zone reporting	2019-11-12 19:12:07 -07:00
dm-historical-service-time.c	dm mpath: add Historical Service Time Path Selector	2020-05-15 10:29:36 -04:00
dm-init.c
dm-integrity.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-io.c
dm-ioctl.c	dm ioctl: use struct_size() helper in retrieve_deps()	2020-06-17 12:31:45 -04:00
dm-kcopyd.c
dm-linear.c	dm,dax: Add dax zero_page_range operation	2020-04-02 19:15:03 -07:00
dm-log-userspace-base.c
dm-log-userspace-transfer.c
dm-log-userspace-transfer.h
dm-log-writes.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-log.c
dm-mpath.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
dm-queue-length.c	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
dm-raid1.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-raid.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-region-hash.c
dm-round-robin.c
dm-rq.c	blk-mq: move failure injection out of blk_mq_complete_request	2020-06-24 09:15:57 -06:00
dm-rq.h
dm-service-time.c	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
dm-snap-persistent.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-snap-transient.c
dm-snap.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-stats.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-stats.h
dm-stripe.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-switch.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-sysfs.c
dm-table.c	dm: remove the make_request_fn check in device_area_is_invalid	2020-04-25 09:45:43 -06:00
dm-target.c
dm-thin-metadata.c	dm thin metadata: fix lockdep complaint	2020-02-27 12:00:53 -05:00
dm-thin-metadata.h	dm thin metadata: Add support for a pre-commit callback	2019-12-05 17:05:24 -05:00
dm-thin.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-uevent.c
dm-uevent.h
dm-unstripe.c
dm-verity-fec.c	dm verity fec: fix hash block number in verity_fec_decode	2020-04-16 16:16:38 -04:00
dm-verity-fec.h
dm-verity-target.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-verity-verify-sig.c
dm-verity-verify-sig.h
dm-verity.h
dm-writecache.c	Linux 5.8-rc4	2020-07-08 08:02:13 -06:00
dm-zero.c
dm-zoned-metadata.c	dm zoned: Fix reclaim zone selection	2020-06-19 12:29:39 -04:00
dm-zoned-reclaim.c	dm zoned: fix uninitialized pointer dereference	2020-06-17 12:13:08 -04:00
dm-zoned-target.c	Linux 5.8-rc4	2020-07-08 08:02:13 -06:00
dm-zoned.h	dm zoned: select reclaim zone based on device index	2020-06-05 14:59:53 -04:00
dm.c	Linux 5.8-rc4	2020-07-08 08:02:13 -06:00
dm.h
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Makefile	dm mpath: add Historical Service Time Path Selector	2020-05-15 10:29:36 -04:00
md-bitmap.c	md: fix deadlock causing by sysfs_notify	2020-07-14 22:58:51 -07:00
md-bitmap.h
md-cluster.c	md-cluster: fix wild pointer of unlock_all_bitmaps()	2020-07-14 23:38:32 -07:00
md-cluster.h
md-faulty.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
md-linear.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
md-linear.h	md/raid1: Replace zero-length array with flexible-array	2020-05-13 12:02:23 -07:00
md-multipath.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
md-multipath.h
md.c	md-cluster: fix rmmod issue when md_cluster convert bitmap to none	2020-07-21 17:30:37 -07:00
md.h	md: fix deadlock causing by sysfs_notify	2020-07-14 22:58:51 -07:00
raid0.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
raid0.h
raid1-10.c
raid1.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
raid1.h	md/raid1: Replace zero-length array with flexible-array	2020-05-13 12:02:23 -07:00
raid5-cache.c	md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*	2020-07-21 17:18:12 -07:00
raid5-log.h
raid5-ppl.c	md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*	2020-07-21 17:18:12 -07:00
raid5.c	md/raid5: use do_div() for 64 bit divisions in raid5_sync_request	2020-07-22 22:49:46 -07:00
raid5.h	md/raid5: set default stripe_size as 4096	2020-07-21 17:18:17 -07:00
raid10.c	md/raid10: avoid deadlock on recovery.	2020-07-22 11:44:54 -07:00
raid10.h	md/raid1: Replace zero-length array with flexible-array	2020-05-13 12:02:23 -07:00