diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2019-08-09 16:53:39 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-08-09 16:53:39 +0200 |
| commit | 0e1c438c44dd9cde56effb44c5f1cfeda72e108d (patch) | |
| tree | fa3492d4d7d8b7444e5d8ebe6c78210826333e4b /fs/btrfs/send.c | |
| parent | c096397c78f766db972f923433031f2dec01cae0 (diff) | |
| parent | cdb2d3ee0436d74fa9092f2df46aaa6f9e03c969 (diff) | |
Merge tag 'kvmarm-fixes-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm fixes for 5.3
- A bunch of switch/case fall-through annotation, fixing one actual bug
- Fix PMU reset bug
- Add missing exception class debug strings
Diffstat (limited to 'fs/btrfs/send.c')
| -rw-r--r-- | fs/btrfs/send.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index f7fe4770f0e58..69b59bf75882e 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -686,7 +686,7 @@ static int send_cmd(struct send_ctx *sctx) hdr->len = cpu_to_le32(sctx->send_size - sizeof(*hdr)); hdr->crc = 0; - crc = crc32c(0, (unsigned char *)sctx->send_buf, sctx->send_size); + crc = btrfs_crc32c(0, (unsigned char *)sctx->send_buf, sctx->send_size); hdr->crc = cpu_to_le32(crc); ret = write_buf(sctx->send_filp, sctx->send_buf, sctx->send_size, @@ -6929,9 +6929,23 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg) if (ret) goto out; + mutex_lock(&fs_info->balance_mutex); + if (test_bit(BTRFS_FS_BALANCE_RUNNING, &fs_info->flags)) { + mutex_unlock(&fs_info->balance_mutex); + btrfs_warn_rl(fs_info, + "cannot run send because a balance operation is in progress"); + ret = -EAGAIN; + goto out; + } + fs_info->send_in_progress++; + mutex_unlock(&fs_info->balance_mutex); + current->journal_info = BTRFS_SEND_TRANS_STUB; ret = send_subvol(sctx); current->journal_info = NULL; + mutex_lock(&fs_info->balance_mutex); + fs_info->send_in_progress--; + mutex_unlock(&fs_info->balance_mutex); if (ret < 0) goto out; |