From: Anand Jain Date: Mon, 4 Dec 2017 04:54:53 +0000 (+0800) Subject: btrfs: cleanup device states define BTRFS_DEV_STATE_IN_FS_METADATA X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=e12c96214d28f9211b4035cf20e76d677ff5611f;p=openwrt%2Fstaging%2Fblogic.git 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 Reviewed-by: Nikolay Borisov [ whitespace adjustments ] Signed-off-by: David Sterba --- diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 396f8183ee86..44573cdda1fd 100644 --- 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 7927307652e9..dc58005cb9f6 100644 --- 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 7a7abe827ac4..bc55c5e6badd 100644 --- 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 c6db1ae4ac56..e782f6853757 100644 --- 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 893e283c7f15..d290641658cc 100644 --- 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;