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author | David Sterba <dsterba@suse.com> | 2017-06-14 16:24:56 +0200 |
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committer | David Sterba <dsterba@suse.com> | 2017-08-16 16:12:03 +0200 |
commit | 74b595fe672a4c4a40fe87c727304e2df3485f13 (patch) | |
tree | feaa2157743c43edbb9537e8b201162736bb6eac /fs/btrfs/dev-replace.c | |
parent | 0a52d108089f337ce20d74bf53f2e574c8ee43f2 (diff) | |
download | linux-stable-74b595fe672a4c4a40fe87c727304e2df3485f13.tar.gz linux-stable-74b595fe672a4c4a40fe87c727304e2df3485f13.tar.bz2 linux-stable-74b595fe672a4c4a40fe87c727304e2df3485f13.zip |
btrfs: factor reading progress out of btrfs_dev_replace_status
We'll want to read the percentage value from dev_replace elsewhere, move
the logic to a separate helper.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
-rw-r--r-- | fs/btrfs/dev-replace.c | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index bee3edeea7a3..31d01eefecd0 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -639,11 +639,39 @@ static void btrfs_dev_replace_update_device_in_mapping_tree( write_unlock(&em_tree->lock); } +/* + * Read progress of device replace status according to the state and last + * stored position. The value format is the same as for + * btrfs_dev_replace::progress_1000 + */ +static u64 btrfs_dev_replace_progress(struct btrfs_fs_info *fs_info) +{ + struct btrfs_dev_replace *dev_replace = &fs_info->dev_replace; + u64 ret = 0; + + switch (dev_replace->replace_state) { + case BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED: + case BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED: + ret = 0; + break; + case BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED: + ret = 1000; + break; + case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED: + case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED: + ret = div64_u64(dev_replace->cursor_left, + div_u64(btrfs_device_get_total_bytes( + dev_replace->srcdev), 1000)); + break; + } + + return ret; +} + void btrfs_dev_replace_status(struct btrfs_fs_info *fs_info, struct btrfs_ioctl_dev_replace_args *args) { struct btrfs_dev_replace *dev_replace = &fs_info->dev_replace; - struct btrfs_device *srcdev; btrfs_dev_replace_lock(dev_replace, 0); /* even if !dev_replace_is_valid, the values are good enough for @@ -656,21 +684,7 @@ void btrfs_dev_replace_status(struct btrfs_fs_info *fs_info, atomic64_read(&dev_replace->num_write_errors); args->status.num_uncorrectable_read_errors = atomic64_read(&dev_replace->num_uncorrectable_read_errors); - switch (dev_replace->replace_state) { - case BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED: - case BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED: - args->status.progress_1000 = 0; - break; - case BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED: - args->status.progress_1000 = 1000; - break; - case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED: - case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED: - srcdev = dev_replace->srcdev; - args->status.progress_1000 = div64_u64(dev_replace->cursor_left, - div_u64(btrfs_device_get_total_bytes(srcdev), 1000)); - break; - } + args->status.progress_1000 = btrfs_dev_replace_progress(fs_info); btrfs_dev_replace_unlock(dev_replace, 0); } |