[PATCH 17/17] fs: simplify invalidate_inodes

From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <brauner@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>, Denis Efremov <efremov@linux.com>,
	Josef Bacik <josef@toxicpanda.com>,
	Stefan Haberland <sth@linux.ibm.com>,
	Jan Hoeppner <hoeppner@linux.ibm.com>,
	Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Alexander Gordeev <agordeev@linux.ibm.com>,
	"Darrick J . Wong" <djwong@kernel.org>, Chris Mason <clm@fb.com>,
	David Sterba <dsterba@suse.com>,
	linux-block@vger.kernel.org, nbd@other.debian.org,
	linux-s390@vger.kernel.org, linux-btrfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: [PATCH 17/17] fs: simplify invalidate_inodes
Date: Fri, 11 Aug 2023 12:08:28 +0200	[thread overview]
Message-ID: <20230811100828.1897174-18-hch@lst.de> (raw)
In-Reply-To: <20230811100828.1897174-1-hch@lst.de>

kill_dirty has always been true for a long time, so hard code it and
remove the unused return value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/inode.c    | 16 ++--------------
 fs/internal.h |  2 +-
 fs/super.c    |  2 +-
 3 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/fs/inode.c b/fs/inode.c
index 8fefb69e1f84a9..fd67ca46415d50 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -754,14 +754,10 @@ EXPORT_SYMBOL_GPL(evict_inodes);
  * @sb:		superblock to operate on
  * @kill_dirty: flag to guide handling of dirty inodes
  *
- * Attempts to free all inodes for a given superblock.  If there were any
- * busy inodes return a non-zero value, else zero.
- * If @kill_dirty is set, discard dirty inodes too, otherwise treat
- * them as busy.
+ * Attempts to free all inodes (including dirty inodes) for a given superblock.
  */
-int invalidate_inodes(struct super_block *sb, bool kill_dirty)
+void invalidate_inodes(struct super_block *sb)
 {
-	int busy = 0;
 	struct inode *inode, *next;
 	LIST_HEAD(dispose);
 
@@ -773,14 +769,8 @@ int invalidate_inodes(struct super_block *sb, bool kill_dirty)
 			spin_unlock(&inode->i_lock);
 			continue;
 		}
-		if (inode->i_state & I_DIRTY_ALL && !kill_dirty) {
-			spin_unlock(&inode->i_lock);
-			busy = 1;
-			continue;
-		}
 		if (atomic_read(&inode->i_count)) {
 			spin_unlock(&inode->i_lock);
-			busy = 1;
 			continue;
 		}
 
@@ -798,8 +788,6 @@ int invalidate_inodes(struct super_block *sb, bool kill_dirty)
 	spin_unlock(&sb->s_inode_list_lock);
 
 	dispose_list(&dispose);
-
-	return busy;
 }
 
 /*
diff --git a/fs/internal.h b/fs/internal.h
index f7a3dc11102647..b94290f61714a0 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -201,7 +201,7 @@ void lock_two_inodes(struct inode *inode1, struct inode *inode2,
  * fs-writeback.c
  */
 extern long get_nr_dirty_inodes(void);
-extern int invalidate_inodes(struct super_block *, bool);
+void invalidate_inodes(struct super_block *sb);
 
 /*
  * dcache.c
diff --git a/fs/super.c b/fs/super.c
index d3d27ff009d5f6..500c5308f2c8a0 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1204,7 +1204,7 @@ static void fs_bdev_mark_dead(struct block_device *bdev, bool surprise)
 	if (!surprise)
 		sync_filesystem(sb);
 	shrink_dcache_sb(sb);
-	invalidate_inodes(sb, true);
+	invalidate_inodes(sb);
 	if (sb->s_op->shutdown)
 		sb->s_op->shutdown(sb);
 
-- 
2.39.2

