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Btrfs: fix "mutually exclusive op is running" error code 

The error code that is returned in response to starting a mutually
exclusive operation when there is one already running got silently
changed from EINVAL to EINPROGRESS by 5ac00add.  Returning EINPROGRESS
to, say, add_dev, when rm_dev is running is misleading.  Furthermore,
the operation itself may want to use EINPROGRESS for other purposes.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
hifive-unleashed-5.1
Ilya Dryomov 2013-01-20 15:57:57 +02:00
parent ed0fb78fb6
commit 2c0c9da02a
1 changed files with 4 additions and 4 deletions
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8
fs/btrfs/ioctl.c
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@ -1340,7 +1340,7 @@ static noinline int btrfs_ioctl_resize(struct file *file,
1)) {
pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n");
mnt_drop_write_file(file);
return -EINPROGRESS;
return -EINVAL;
}
mutex_lock(&root->fs_info->volume_mutex);
@ -2192,7 +2192,7 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
if (atomic_xchg(&root->fs_info->mutually_exclusive_operation_running,
1)) {
pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n");
return -EINPROGRESS;
return -EINVAL;
}
ret = mnt_want_write_file(file);
if (ret) {
@ -2266,7 +2266,7 @@ static long btrfs_ioctl_add_dev(struct btrfs_root *root, void __user *arg)
if (atomic_xchg(&root->fs_info->mutually_exclusive_operation_running,
1)) {
pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n");
return -EINPROGRESS;
return -EINVAL;
}
mutex_lock(&root->fs_info->volume_mutex);
@ -2303,7 +2303,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
1)) {
pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n");
mnt_drop_write_file(file);
return -EINPROGRESS;
return -EINVAL;
}
mutex_lock(&root->fs_info->volume_mutex);