From: Anand Jain <anand.j...@oracle.com>
Let the list iterator iterate further and find other stale
devices and delete it. This is in preparation to add support
for user land request-able stale devices cleanup. Also rename
btrfs_free_stale_device() to btrfs_free_stale_devices().
Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
fs/btrfs/volumes.c | 24 +++++++++++-------------
1 file changed, 11 insertions(+), 13 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 3f481da9cae7..cd234a5dc763 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -606,21 +606,22 @@ static void pending_bios_fn(struct btrfs_work *work)
}
-static void btrfs_free_stale_device(struct btrfs_device *cur_dev)
+static void btrfs_free_stale_devices(struct btrfs_device *cur_dev)
{
- struct btrfs_fs_devices *fs_devs;
- struct btrfs_device *dev;
+ struct btrfs_fs_devices *fs_devs, *tmp_fs_devs;
+ struct btrfs_device *dev, *tmp_dev;
if (!cur_dev->name)
return;
- list_for_each_entry(fs_devs, &fs_uuids, list) {
- int del = 1;
+ list_for_each_entry_safe(fs_devs, tmp_fs_devs, &fs_uuids, list) {
if (fs_devs->opened)
continue;
- list_for_each_entry(dev, &fs_devs->devices, dev_list) {
+ list_for_each_entry_safe(dev, tmp_dev,
+ &fs_devs->devices, dev_list) {
+ int not_found;
if (dev == cur_dev)
continue;
@@ -634,14 +635,12 @@ static void btrfs_free_stale_device(struct btrfs_device
*cur_dev)
* either use mapper or non mapper path throughout.
*/
rcu_read_lock();
- del = strcmp(rcu_str_deref(dev->name),
+ not_found = strcmp(rcu_str_deref(dev->name),
rcu_str_deref(cur_dev->name));
rcu_read_unlock();
- if (!del)
- break;
- }
+ if (not_found)
+ continue;
- if (!del) {
/* delete the stale device */
if (fs_devs->num_devices == 1) {
btrfs_sysfs_remove_fsid(fs_devs);
@@ -652,7 +651,6 @@ static void btrfs_free_stale_device(struct btrfs_device
*cur_dev)
list_del(&dev->dev_list);
free_device(dev);
}
- break;
}
}
}
@@ -780,7 +778,7 @@ static noinline int device_list_add(const char *path,
ret = 1;
device->fs_devices = fs_devices;
- btrfs_free_stale_device(device);
+ btrfs_free_stale_devices(device);
} else if (!device->name || strcmp(device->name->str, path)) {
/*
* When FS is already mounted.
--
2.7.0
--
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