From f7b885befd05fa4f546cdc3e6c9a3b4a30484cd1 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Tue, 13 Feb 2018 17:50:42 +0800 Subject: [PATCH] btrfs: manage thread_pool mount option as %u The mount option thread_pool is always unsigned. Manage it that way all around. Signed-off-by: Anand Jain Reviewed-by: Nikolay Borisov Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 2 +- fs/btrfs/disk-io.c | 4 ++-- fs/btrfs/super.c | 13 ++++++------- 3 files changed, 9 insertions(+), 10 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 2c96275..407f435 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -935,7 +935,7 @@ struct btrfs_fs_info { struct btrfs_workqueue *extent_workers; struct task_struct *transaction_kthread; struct task_struct *cleaner_kthread; - int thread_pool_size; + u32 thread_pool_size; struct kobject *space_info_kobj; diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 9f7ed43..4762440 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2183,7 +2183,7 @@ static void btrfs_init_qgroup(struct btrfs_fs_info *fs_info) static int btrfs_init_workqueues(struct btrfs_fs_info *fs_info, struct btrfs_fs_devices *fs_devices) { - int max_active = fs_info->thread_pool_size; + u32 max_active = fs_info->thread_pool_size; unsigned int flags = WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND; fs_info->workers = @@ -2404,7 +2404,7 @@ int open_ctree(struct super_block *sb, int err = -EINVAL; int num_backups_tried = 0; int backup_index = 0; - int max_active; + u32 max_active; int clear_free_space_tree = 0; tree_root = fs_info->tree_root = btrfs_alloc_root(fs_info, GFP_KERNEL); diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 4b81794..790f3ab 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -345,7 +345,7 @@ static const match_table_t tokens = { {Opt_barrier, "barrier"}, {Opt_max_inline, "max_inline=%s"}, {Opt_alloc_start, "alloc_start=%s"}, - {Opt_thread_pool, "thread_pool=%d"}, + {Opt_thread_pool, "thread_pool=%u"}, {Opt_compress, "compress"}, {Opt_compress_type, "compress=%s"}, {Opt_compress_force, "compress-force"}, @@ -594,12 +594,11 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, ret = match_int(&args[0], &intarg); if (ret) { goto out; - } else if (intarg > 0) { - info->thread_pool_size = intarg; - } else { + } else if (intarg == 0) { ret = -EINVAL; goto out; } + info->thread_pool_size = intarg; break; case Opt_max_inline: num = match_strdup(&args[0]); @@ -1284,7 +1283,7 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry) seq_printf(seq, ",max_inline=%llu", info->max_inline); if (info->thread_pool_size != min_t(unsigned long, num_online_cpus() + 2, 8)) - seq_printf(seq, ",thread_pool=%d", info->thread_pool_size); + seq_printf(seq, ",thread_pool=%u", info->thread_pool_size); if (btrfs_test_opt(info, COMPRESS)) { compress_type = btrfs_compress_type2str(info->compress_type); if (btrfs_test_opt(info, FORCE_COMPRESS)) @@ -1690,7 +1689,7 @@ out: } static void btrfs_resize_thread_pool(struct btrfs_fs_info *fs_info, - int new_pool_size, int old_pool_size) + u32 new_pool_size, u32 old_pool_size) { if (new_pool_size == old_pool_size) return; @@ -1758,7 +1757,7 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data) unsigned long old_opts = fs_info->mount_opt; unsigned long old_compress_type = fs_info->compress_type; u64 old_max_inline = fs_info->max_inline; - int old_thread_pool_size = fs_info->thread_pool_size; + u32 old_thread_pool_size = fs_info->thread_pool_size; unsigned int old_metadata_ratio = fs_info->metadata_ratio; int ret; -- 2.7.4