From df677140281beb608f6748c341af7612f7bfe7a0 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Tue, 8 Mar 2011 08:28:01 +0100 Subject: block: biovec_slab vs. CONFIG_BLK_DEV_INTEGRITY The block integrity subsystem no longer uses the bio_vec slabs so this code can safely be compiled in. Signed-off-by: Martin K. Petersen Signed-off-by: Jens Axboe --- fs/bio.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'fs/bio.c') diff --git a/fs/bio.c b/fs/bio.c index 4bd454fa844e..5694b756ed01 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -43,7 +43,7 @@ static mempool_t *bio_split_pool __read_mostly; * unsigned short */ #define BV(x) { .nr_vecs = x, .name = "biovec-"__stringify(x) } -struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly = { +static struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly = { BV(1), BV(4), BV(16), BV(64), BV(128), BV(BIO_MAX_PAGES), }; #undef BV @@ -1656,12 +1656,10 @@ static void __init biovec_init_slabs(void) int size; struct biovec_slab *bvs = bvec_slabs + i; -#ifndef CONFIG_BLK_DEV_INTEGRITY if (bvs->nr_vecs <= BIO_INLINE_VECS) { bvs->slab = NULL; continue; } -#endif size = bvs->nr_vecs * sizeof(struct bio_vec); bvs->slab = kmem_cache_create(bvs->name, size, 0, -- cgit v1.2.3 From a91a2785b200864aef2270ed6a3babac7a253a20 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Thu, 17 Mar 2011 11:11:05 +0100 Subject: block: Require subsystems to explicitly allocate bio_set integrity mempool MD and DM create a new bio_set for every metadevice. Each bio_set has an integrity mempool attached regardless of whether the metadevice is capable of passing integrity metadata. This is a waste of memory. Instead we defer the allocation decision to MD and DM since we know at metadevice creation time whether integrity passthrough is needed or not. Automatic integrity mempool allocation can then be removed from bioset_create() and we make an explicit integrity allocation for the fs_bio_set. Signed-off-by: Martin K. Petersen Reported-by: Zdenek Kabelac Acked-by: Mike Snitzer Signed-off-by: Jens Axboe --- drivers/md/dm-table.c | 7 +++++-- drivers/md/dm.c | 12 +++++++++--- drivers/md/dm.h | 2 +- drivers/md/linear.c | 3 +-- drivers/md/md.c | 8 ++++++-- drivers/md/multipath.c | 7 +++++-- drivers/md/raid0.c | 3 +-- drivers/md/raid1.c | 5 ++--- drivers/md/raid10.c | 7 +++++-- fs/bio-integrity.c | 3 +++ fs/bio.c | 6 +++--- 11 files changed, 41 insertions(+), 22 deletions(-) (limited to 'fs/bio.c') diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index f50a7b952257..416d4e258df6 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -55,6 +55,7 @@ struct dm_table { struct dm_target *targets; unsigned discards_supported:1; + unsigned integrity_supported:1; /* * Indicates the rw permissions for the new logical @@ -859,7 +860,7 @@ int dm_table_alloc_md_mempools(struct dm_table *t) return -EINVAL; } - t->mempools = dm_alloc_md_mempools(type); + t->mempools = dm_alloc_md_mempools(type, t->integrity_supported); if (!t->mempools) return -ENOMEM; @@ -935,8 +936,10 @@ static int dm_table_prealloc_integrity(struct dm_table *t, struct mapped_device struct dm_dev_internal *dd; list_for_each_entry(dd, devices, list) - if (bdev_get_integrity(dd->dm_dev.bdev)) + if (bdev_get_integrity(dd->dm_dev.bdev)) { + t->integrity_supported = 1; return blk_integrity_register(dm_disk(md), NULL); + } return 0; } diff --git a/drivers/md/dm.c b/drivers/md/dm.c index d22b9905c168..88820704a191 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2620,9 +2620,10 @@ int dm_noflush_suspending(struct dm_target *ti) } EXPORT_SYMBOL_GPL(dm_noflush_suspending); -struct dm_md_mempools *dm_alloc_md_mempools(unsigned type) +struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity) { struct dm_md_mempools *pools = kmalloc(sizeof(*pools), GFP_KERNEL); + unsigned int pool_size = (type == DM_TYPE_BIO_BASED) ? 16 : MIN_IOS; if (!pools) return NULL; @@ -2639,13 +2640,18 @@ struct dm_md_mempools *dm_alloc_md_mempools(unsigned type) if (!pools->tio_pool) goto free_io_pool_and_out; - pools->bs = (type == DM_TYPE_BIO_BASED) ? - bioset_create(16, 0) : bioset_create(MIN_IOS, 0); + pools->bs = bioset_create(pool_size, 0); if (!pools->bs) goto free_tio_pool_and_out; + if (integrity && bioset_integrity_create(pools->bs, pool_size)) + goto free_bioset_and_out; + return pools; +free_bioset_and_out: + bioset_free(pools->bs); + free_tio_pool_and_out: mempool_destroy(pools->tio_pool); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 0c2dd5f4af76..1aaf16746da8 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -149,7 +149,7 @@ void dm_kcopyd_exit(void); /* * Mempool operations */ -struct dm_md_mempools *dm_alloc_md_mempools(unsigned type); +struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity); void dm_free_md_mempools(struct dm_md_mempools *pools); #endif diff --git a/drivers/md/linear.c b/drivers/md/linear.c index 338804f8fb3b..abfb59a61ede 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -210,8 +210,7 @@ static int linear_run (mddev_t *mddev) blk_queue_merge_bvec(mddev->queue, linear_mergeable_bvec); mddev->queue->backing_dev_info.congested_fn = linear_congested; mddev->queue->backing_dev_info.congested_data = mddev; - md_integrity_register(mddev); - return 0; + return md_integrity_register(mddev); } static void free_conf(struct rcu_head *head) diff --git a/drivers/md/md.c b/drivers/md/md.c index 86ba66c0b28a..1876761f1828 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1803,8 +1803,12 @@ int md_integrity_register(mddev_t *mddev) mdname(mddev)); return -EINVAL; } - printk(KERN_NOTICE "md: data integrity on %s enabled\n", - mdname(mddev)); + printk(KERN_NOTICE "md: data integrity enabled on %s\n", mdname(mddev)); + if (bioset_integrity_create(mddev->bio_set, BIO_POOL_SIZE)) { + printk(KERN_ERR "md: failed to create integrity pool for %s\n", + mdname(mddev)); + return -EINVAL; + } return 0; } EXPORT_SYMBOL(md_integrity_register); diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 5e694b151c30..c35890990985 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -315,7 +315,7 @@ static int multipath_remove_disk(mddev_t *mddev, int number) p->rdev = rdev; goto abort; } - md_integrity_register(mddev); + err = md_integrity_register(mddev); } abort: @@ -489,7 +489,10 @@ static int multipath_run (mddev_t *mddev) mddev->queue->backing_dev_info.congested_fn = multipath_congested; mddev->queue->backing_dev_info.congested_data = mddev; - md_integrity_register(mddev); + + if (md_integrity_register(mddev)) + goto out_free_conf; + return 0; out_free_conf: diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 95916fd6394a..e86bf3682e1e 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -379,8 +379,7 @@ static int raid0_run(mddev_t *mddev) blk_queue_merge_bvec(mddev->queue, raid0_mergeable_bvec); dump_zones(mddev); - md_integrity_register(mddev); - return 0; + return md_integrity_register(mddev); } static int raid0_stop(mddev_t *mddev) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 8f34ad5c478b..c2a21ae56d97 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1132,7 +1132,7 @@ static int raid1_remove_disk(mddev_t *mddev, int number) p->rdev = rdev; goto abort; } - md_integrity_register(mddev); + err = md_integrity_register(mddev); } abort: @@ -2017,8 +2017,7 @@ static int run(mddev_t *mddev) mddev->queue->backing_dev_info.congested_fn = raid1_congested; mddev->queue->backing_dev_info.congested_data = mddev; - md_integrity_register(mddev); - return 0; + return md_integrity_register(mddev); } static int stop(mddev_t *mddev) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index c0d0f5f7e407..f7b62370b374 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1188,7 +1188,7 @@ static int raid10_remove_disk(mddev_t *mddev, int number) p->rdev = rdev; goto abort; } - md_integrity_register(mddev); + err = md_integrity_register(mddev); } abort: @@ -2343,7 +2343,10 @@ static int run(mddev_t *mddev) if (conf->near_copies < conf->raid_disks) blk_queue_merge_bvec(mddev->queue, raid10_mergeable_bvec); - md_integrity_register(mddev); + + if (md_integrity_register(mddev)) + goto out_free_conf; + return 0; out_free_conf: diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c index e49cce234c65..9c5e6b2cd11a 100644 --- a/fs/bio-integrity.c +++ b/fs/bio-integrity.c @@ -761,6 +761,9 @@ int bioset_integrity_create(struct bio_set *bs, int pool_size) { unsigned int max_slab = vecs_to_idx(BIO_MAX_PAGES); + if (bs->bio_integrity_pool) + return 0; + bs->bio_integrity_pool = mempool_create_slab_pool(pool_size, bip_slab[max_slab].slab); diff --git a/fs/bio.c b/fs/bio.c index 5694b756ed01..85e2eabb1f81 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -1636,9 +1636,6 @@ struct bio_set *bioset_create(unsigned int pool_size, unsigned int front_pad) if (!bs->bio_pool) goto bad; - if (bioset_integrity_create(bs, pool_size)) - goto bad; - if (!biovec_create_pools(bs, pool_size)) return bs; @@ -1682,6 +1679,9 @@ static int __init init_bio(void) if (!fs_bio_set) panic("bio: can't allocate bios\n"); + if (bioset_integrity_create(fs_bio_set, BIO_POOL_SIZE)) + panic("bio: can't create integrity pool\n"); + bio_split_pool = mempool_create_kmalloc_pool(BIO_SPLIT_ENTRIES, sizeof(struct bio_pair)); if (!bio_split_pool) -- cgit v1.2.3 From 80cdc6dae76ea67d2b21bdca8df17ef47251eb8b Mon Sep 17 00:00:00 2001 From: Mandeep Singh Baines Date: Tue, 22 Mar 2011 16:33:54 -0700 Subject: fs: use appropriate printk priority levels printk()s without a priority level default to KERN_WARNING. To reduce noise at KERN_WARNING, this patch set the priority level appriopriately for unleveled printks()s. This should be useful to folks that look at dmesg warnings closely. Signed-off-by: Mandeep Singh Baines Cc: Jens Axboe Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/bio.c | 2 +- fs/namespace.c | 2 +- init/do_mounts.c | 3 ++- 3 files changed, 4 insertions(+), 3 deletions(-) (limited to 'fs/bio.c') diff --git a/fs/bio.c b/fs/bio.c index 4bd454fa844e..4cf2a52fbc54 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -111,7 +111,7 @@ static struct kmem_cache *bio_find_or_create_slab(unsigned int extra_size) if (!slab) goto out_unlock; - printk("bio: create slab <%s> at %d\n", bslab->name, entry); + printk(KERN_INFO "bio: create slab <%s> at %d\n", bslab->name, entry); bslab->slab = slab; bslab->slab_ref = 1; bslab->slab_size = sz; diff --git a/fs/namespace.c b/fs/namespace.c index 9263995bf6a1..7dba2ed03429 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2701,7 +2701,7 @@ void __init mnt_init(void) if (!mount_hashtable) panic("Failed to allocate mount hash table\n"); - printk("Mount-cache hash table entries: %lu\n", HASH_SIZE); + printk(KERN_INFO "Mount-cache hash table entries: %lu\n", HASH_SIZE); for (u = 0; u < HASH_SIZE; u++) INIT_LIST_HEAD(&mount_hashtable[u]); diff --git a/init/do_mounts.c b/init/do_mounts.c index 2b54bef33b55..3e0112157795 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -293,7 +293,8 @@ static int __init do_mount_root(char *name, char *fs, int flags, void *data) sys_chdir((const char __user __force *)"/root"); ROOT_DEV = current->fs->pwd.mnt->mnt_sb->s_dev; - printk("VFS: Mounted root (%s filesystem)%s on device %u:%u.\n", + printk(KERN_INFO + "VFS: Mounted root (%s filesystem)%s on device %u:%u.\n", current->fs->pwd.mnt->mnt_sb->s_type->name, current->fs->pwd.mnt->mnt_sb->s_flags & MS_RDONLY ? " readonly" : "", MAJOR(ROOT_DEV), MINOR(ROOT_DEV)); -- cgit v1.2.3