btrfs: cleanup device states define BTRFS_DEV_STATE_IN_FS_METADATA

Currently device state is being managed by each individual int
variable such as struct btrfs_device::in_fs_metadata. Instead of
that declare device state BTRFS_DEV_STATE_IN_FS_METADATA and use
the bit operations.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
[ whitespace adjustments ]
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 396f818..44573cd 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3393,7 +3393,7 @@ static int barrier_all_devices(struct btrfs_fs_info *info)
                        continue;
                if (!dev->bdev)
                        continue;
-               if (!dev->in_fs_metadata ||
+               if (!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &dev->dev_state) ||
                    !test_bit(BTRFS_DEV_STATE_WRITEABLE, &dev->dev_state))
                        continue;
 
@@ -3409,7 +3409,7 @@ static int barrier_all_devices(struct btrfs_fs_info *info)
                        errors_wait++;
                        continue;
                }
-               if (!dev->in_fs_metadata ||
+               if (!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &dev->dev_state) ||
                    !test_bit(BTRFS_DEV_STATE_WRITEABLE, &dev->dev_state))
                        continue;
 
@@ -3507,7 +3507,7 @@ int write_all_supers(struct btrfs_fs_info *fs_info, int max_mirrors)
                        total_errors++;
                        continue;
                }
-               if (!dev->in_fs_metadata ||
+               if (!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &dev->dev_state) ||
                    !test_bit(BTRFS_DEV_STATE_WRITEABLE, &dev->dev_state))
                        continue;
 
@@ -3547,7 +3547,7 @@ int write_all_supers(struct btrfs_fs_info *fs_info, int max_mirrors)
        list_for_each_entry(dev, head, dev_list) {
                if (!dev->bdev)
                        continue;
-               if (!dev->in_fs_metadata ||
+               if (!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &dev->dev_state) ||
                    !test_bit(BTRFS_DEV_STATE_WRITEABLE, &dev->dev_state))
                        continue;
 

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 7927307..dc58005 100644 (file)
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -4129,7 +4129,8 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
        }
 
        mutex_lock(&fs_info->scrub_lock);
-       if (!dev->in_fs_metadata || dev->is_tgtdev_for_dev_replace) {
+       if (!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &dev->dev_state) ||
+           dev->is_tgtdev_for_dev_replace) {
                mutex_unlock(&fs_info->scrub_lock);
                mutex_unlock(&fs_info->fs_devices->device_list_mutex);
                return -EIO;

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 7a7abe8..bc55c5e 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1972,8 +1972,9 @@ static int btrfs_calc_avail_data_space(struct btrfs_fs_info *fs_info,
 
        rcu_read_lock();
        list_for_each_entry_rcu(device, &fs_devices->devices, dev_list) {
-               if (!device->in_fs_metadata || !device->bdev ||
-                   device->is_tgtdev_for_dev_replace)
+               if (!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA,
+                                               &device->dev_state) ||
+                   !device->bdev || device->is_tgtdev_for_dev_replace)
                        continue;
 
                if (i >= nr_devices)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index c6db1ae..e782f68 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -705,7 +705,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
                fs_devices->rotating = 1;
 
        device->bdev = bdev;
-       device->in_fs_metadata = 0;
+       clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
        device->mode = flags;
 
        fs_devices->open_devices++;
@@ -909,7 +909,8 @@ void btrfs_close_extra_devices(struct btrfs_fs_devices *fs_devices, int step)
 again:
        /* This is the initialized path, it is safe to release the devices. */
        list_for_each_entry_safe(device, next, &fs_devices->devices, dev_list) {
-               if (device->in_fs_metadata) {
+               if (test_bit(BTRFS_DEV_STATE_IN_FS_METADATA,
+                                                       &device->dev_state)) {
                        if (!device->is_tgtdev_for_dev_replace &&
                            (!latest_dev ||
                             device->generation > latest_dev->generation)) {
@@ -1634,7 +1635,7 @@ static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
        struct extent_buffer *leaf;
        struct btrfs_key key;
 
-       WARN_ON(!device->in_fs_metadata);
+       WARN_ON(!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state));
        WARN_ON(device->is_tgtdev_for_dev_replace);
        path = btrfs_alloc_path();
        if (!path)
@@ -1975,7 +1976,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info, const char *device_path,
        if (ret)
                goto error_undo;
 
-       device->in_fs_metadata = 0;
+       clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
        btrfs_scrub_cancel_dev(fs_info, device);
 
        /*
@@ -2195,7 +2196,8 @@ int btrfs_find_device_missing_or_by_path(struct btrfs_fs_info *fs_info,
                 * is held by the caller.
                 */
                list_for_each_entry(tmp, devices, dev_list) {
-                       if (tmp->in_fs_metadata && !tmp->bdev) {
+                       if (test_bit(BTRFS_DEV_STATE_IN_FS_METADATA,
+                                       &tmp->dev_state) && !tmp->bdev) {
                                *device = tmp;
                                break;
                        }
@@ -2447,7 +2449,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
        device->commit_total_bytes = device->total_bytes;
        device->fs_info = fs_info;
        device->bdev = bdev;
-       device->in_fs_metadata = 1;
+       set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
        device->is_tgtdev_for_dev_replace = 0;
        device->mode = FMODE_EXCL;
        device->dev_stats_valid = 1;
@@ -2656,7 +2658,7 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
        device->commit_bytes_used = device->bytes_used;
        device->fs_info = fs_info;
        device->bdev = bdev;
-       device->in_fs_metadata = 1;
+       set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
        device->is_tgtdev_for_dev_replace = 1;
        device->mode = FMODE_EXCL;
        device->dev_stats_valid = 1;
@@ -2685,7 +2687,7 @@ void btrfs_init_dev_replace_tgtdev_for_resume(struct btrfs_fs_info *fs_info,
        tgtdev->io_align = sectorsize;
        tgtdev->sector_size = sectorsize;
        tgtdev->fs_info = fs_info;
-       tgtdev->in_fs_metadata = 1;
+       set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &tgtdev->dev_state);
 }
 
 static noinline int btrfs_update_device(struct btrfs_trans_handle *trans,
@@ -4737,8 +4739,9 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
                        continue;
                }
 
-               if (!device->in_fs_metadata ||
-                   device->is_tgtdev_for_dev_replace)
+               if (!test_bit(BTRFS_DEV_STATE_IN_FS_METADATA,
+                                       &device->dev_state) ||
+                    device->is_tgtdev_for_dev_replace)
                        continue;
 
                if (device->total_bytes > device->bytes_used)
@@ -6529,7 +6532,9 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
                        }
                        btrfs_report_missing_device(fs_info, devid, uuid, false);
                }
-               map->stripes[i].dev->in_fs_metadata = 1;
+               set_bit(BTRFS_DEV_STATE_IN_FS_METADATA,
+                               &(map->stripes[i].dev->dev_state));
+
        }
 
        write_lock(&map_tree->map_tree.lock);
@@ -6704,7 +6709,7 @@ static int read_one_dev(struct btrfs_fs_info *fs_info,
        }
 
        fill_device_from_item(leaf, dev_item, device);
-       device->in_fs_metadata = 1;
+       set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
        if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
            !device->is_tgtdev_for_dev_replace) {
                device->fs_devices->total_rw_bytes += device->total_bytes;

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 893e283..d290641 100644 (file)
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -48,6 +48,7 @@ struct btrfs_pending_bios {
 #endif
 
 #define BTRFS_DEV_STATE_WRITEABLE      (0)
+#define BTRFS_DEV_STATE_IN_FS_METADATA (1)
 
 struct btrfs_device {
        struct list_head dev_list;
@@ -72,7 +73,6 @@ struct btrfs_device {
        fmode_t mode;
 
        unsigned long dev_state;
-       int in_fs_metadata;
        int missing;
        int is_tgtdev_for_dev_replace;
        blk_status_t last_flush_error;