From a17c95df4cc8ade4e0e7276a04c0cc89505c74d7 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Tue, 20 Mar 2018 17:28:05 +0100 Subject: [PATCH] btrfs: move clearing of EXCL_OP out of __cancel_balance Make the clearning visible in the callers so we can pair it with the test_and_set part. Signed-off-by: David Sterba --- fs/btrfs/ioctl.c | 2 +- fs/btrfs/volumes.c | 13 +++++++------ 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 937afa8e1613..f0d0aef3826a 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -4462,7 +4462,7 @@ do_balance: * Ownership of bctl and filesystem flag BTRFS_FS_EXCL_OP * goes to to btrfs_balance. bctl is freed in __cancel_balance, * or, if restriper was paused all the way until unmount, in - * free_fs_info. The flag is cleared in __cancel_balance. + * free_fs_info. The flag should be cleared after __cancel_balance. */ need_unlock = false; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 1da46365657b..7e3656c9798b 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3780,8 +3780,6 @@ static void __cancel_balance(struct btrfs_fs_info *fs_info) ret = del_balance_item(fs_info); if (ret) btrfs_handle_fs_error(fs_info, ret, NULL); - - clear_bit(BTRFS_FS_EXCL_OP, &fs_info->flags); } /* Non-zero return value signifies invalidity */ @@ -3939,6 +3937,7 @@ int btrfs_balance(struct btrfs_balance_control *bctl, if ((ret && ret != -ECANCELED && ret != -ENOSPC) || balance_need_close(fs_info)) { __cancel_balance(fs_info); + clear_bit(BTRFS_FS_EXCL_OP, &fs_info->flags); } wake_up(&fs_info->balance_wait_q); @@ -3947,10 +3946,10 @@ int btrfs_balance(struct btrfs_balance_control *bctl, out: if (bctl->flags & BTRFS_BALANCE_RESUME) __cancel_balance(fs_info); - else { + else kfree(bctl); - clear_bit(BTRFS_FS_EXCL_OP, &fs_info->flags); - } + clear_bit(BTRFS_FS_EXCL_OP, &fs_info->flags); + return ret; } @@ -4118,8 +4117,10 @@ int btrfs_cancel_balance(struct btrfs_fs_info *fs_info) mutex_lock(&fs_info->volume_mutex); mutex_lock(&fs_info->balance_mutex); - if (fs_info->balance_ctl) + if (fs_info->balance_ctl) { __cancel_balance(fs_info); + clear_bit(BTRFS_FS_EXCL_OP, &fs_info->flags); + } mutex_unlock(&fs_info->volume_mutex); }