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Subject[PATCH 2/2] btrfs: transaction_kthread() is not freezable
transaction_kthread() is calling try_to_freeze(), but that's just an 
expeinsive no-op given the fact that the thread is not marked freezable.

After removing this, disk-io.c is now independent on freezer API.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---
fs/btrfs/disk-io.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d8d68af..4c7361a 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -25,7 +25,6 @@
#include <linux/buffer_head.h>
#include <linux/workqueue.h>
#include <linux/kthread.h>
-#include <linux/freezer.h>
#include <linux/slab.h>
#include <linux/migrate.h>
#include <linux/ratelimit.h>
@@ -1920,14 +1919,12 @@ sleep:
if (unlikely(test_bit(BTRFS_FS_STATE_ERROR,
&root->fs_info->fs_state)))
btrfs_cleanup_transaction(root);
- if (!try_to_freeze()) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (!kthread_should_stop() &&
- (!btrfs_transaction_blocked(root->fs_info) ||
- cannot_commit))
- schedule_timeout(delay);
- __set_current_state(TASK_RUNNING);
- }
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (!kthread_should_stop() &&
+ (!btrfs_transaction_blocked(root->fs_info) ||
+ cannot_commit))
+ schedule_timeout(delay);
+ __set_current_state(TASK_RUNNING);
} while (!kthread_should_stop());
return 0;
}
--
Jiri Kosina
SUSE Labs

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