[PATCH v1 4/5] fuse: Add TASK_FREEZABLE to device read operations

[Dai Junbing]

Add the TASK_FREEZABLE flag when sleeping during FUSE device read
operations. This prevents premature wakeups during system suspend/resume
cycles, avoiding unnecessary wakeup overhead and power consumption.

During sleep in the FUSE device read path, no kernel locks are held.
Therefore, adding TASK_FREEZABLE is safe.

Signed-off-by: Dai Junbing <daijunbing@xxxxxxxx>
---
 fs/fuse/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index e80cd8f2c049..b3dbd113e2e2 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1418,7 +1418,7 @@ static ssize_t fuse_dev_do_read(struct fuse_dev *fud, struct file *file,
 
 		if (file->f_flags & O_NONBLOCK)
 			return -EAGAIN;
-		err = wait_event_interruptible_exclusive(fiq->waitq,
+		err = wait_event_freezable_exclusive(fiq->waitq,
 				!fiq->connected || request_pending(fiq));
 		if (err)
 			return err;
-- 
2.25.1