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Subject: [PATCH 2/3] fuse: Kill fuse_req::intr_unique
From:   Kirill Tkhai <ktkhai@virtuozzo.com>
To:     miklos@szeredi.hu, kuznet@virtuozzo.com, ktkhai@virtuozzo.com,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Date:   Tue, 11 Sep 2018 13:12:05 +0300
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This field is not needed after the previous patch,
since we can easily convert request ID to interrupt
request ID and vice versa.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
---
 fs/fuse/dev.c    |   11 ++++++-----
 fs/fuse/fuse_i.h |    3 ---
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index f24fd6f61a7a..dda177b57ea2 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1089,12 +1089,11 @@ __releases(fiq->waitq.lock)
 	int err;
 
 	list_del_init(&req->intr_entry);
-	req->intr_unique = (req->in.h.unique | FUSE_INT_REQ_BIT);
 	memset(&ih, 0, sizeof(ih));
 	memset(&arg, 0, sizeof(arg));
 	ih.len = reqsize;
 	ih.opcode = FUSE_INTERRUPT;
-	ih.unique = req->intr_unique;
+	ih.unique = (req->in.h.unique | FUSE_INT_REQ_BIT);
 	arg.unique = req->in.h.unique;
 
 	spin_unlock(&fiq->waitq.lock);
@@ -1799,8 +1798,10 @@ static struct fuse_req *request_find(struct fuse_pqueue *fpq, u64 unique)
 {
 	struct fuse_req *req;
 
+	unique &= ~FUSE_INT_REQ_BIT;
+
 	list_for_each_entry(req, &fpq->processing, list) {
-		if (req->in.h.unique == unique || req->intr_unique == unique)
+		if (req->in.h.unique == unique)
 			return req;
 	}
 	return NULL;
@@ -1878,8 +1879,8 @@ static ssize_t fuse_dev_do_write(struct fuse_dev *fud,
 	if (!req)
 		goto err_unlock_pq;
 
-	/* Is it an interrupt reply? */
-	if (req->intr_unique == oh.unique) {
+	/* Is it an interrupt reply ID? */
+	if (oh.unique & FUSE_INT_REQ_BIT) {
 		spin_unlock(&fpq->lock);
 
 		err = -EINVAL;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index f78e9614bb5f..f72e4974b3bb 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -311,9 +311,6 @@ struct fuse_req {
 	/** refcount */
 	refcount_t count;
 
-	/** Unique ID for the interrupt request */
-	u64 intr_unique;
-
 	/* Request flags, updated with test/set/clear_bit() */
 	unsigned long flags;