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 <anand.jain@oracle.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 2c96275..407f435 100644 (file)
--- 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 (file)
--- 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 (file)
--- 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;