From: Christoph Hellwig <hch@lst.de>
Date: Thu, 29 Aug 2024 04:08:37 +0000 (+0300)
Subject: xfs: use kfree_rcu_mightsleep to free the perag structures
X-Git-Tag: v6.12-rc1~138^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4ef7c6d39dc72dae983b836c8b2b5de7128c0da3;p=thirdparty%2Fkernel%2Flinux.git

xfs: use kfree_rcu_mightsleep to free the perag structures

Using the kfree_rcu_mightsleep is simpler and removes the need for a
rcu_head in the perag structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
---

diff --git a/fs/xfs/libxfs/xfs_ag.c b/fs/xfs/libxfs/xfs_ag.c
index 7e80732cb5470..4b5a39a83f7ae 100644
--- a/fs/xfs/libxfs/xfs_ag.c
+++ b/fs/xfs/libxfs/xfs_ag.c
@@ -235,16 +235,6 @@ out:
 	return error;
 }
 
-STATIC void
-__xfs_free_perag(
-	struct rcu_head	*head)
-{
-	struct xfs_perag *pag = container_of(head, struct xfs_perag, rcu_head);
-
-	ASSERT(!delayed_work_pending(&pag->pag_blockgc_work));
-	kfree(pag);
-}
-
 /*
  * Free up the per-ag resources associated with the mount structure.
  */
@@ -270,7 +260,7 @@ xfs_free_perag(
 		xfs_perag_rele(pag);
 		XFS_IS_CORRUPT(pag->pag_mount,
 				atomic_read(&pag->pag_active_ref) != 0);
-		call_rcu(&pag->rcu_head, __xfs_free_perag);
+		kfree_rcu_mightsleep(pag);
 	}
 }
 
diff --git a/fs/xfs/libxfs/xfs_ag.h b/fs/xfs/libxfs/xfs_ag.h
index 35de09a2516c7..d62c266c0b44d 100644
--- a/fs/xfs/libxfs/xfs_ag.h
+++ b/fs/xfs/libxfs/xfs_ag.h
@@ -63,9 +63,6 @@ struct xfs_perag {
 	/* Blocks reserved for the reverse mapping btree. */
 	struct xfs_ag_resv	pag_rmapbt_resv;
 
-	/* for rcu-safe freeing */
-	struct rcu_head	rcu_head;
-
 	/* Precalculated geometry info */
 	xfs_agblock_t		block_count;
 	xfs_agblock_t		min_block;