linux-kernel - [PATCH] bcachefs: Move the ei_flags setting to after initialization

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Date: Tue,  4 Jun 2024 16:46:10 +0800
From: Youling Tang <youling.tang@...ux.dev>
To: Kent Overstreet <kent.overstreet@...ux.dev>
Cc: Brian Foster <bfoster@...hat.com>,
	linux-bcachefs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Youling Tang <tangyouling@...inos.cn>
Subject: [PATCH] bcachefs: Move the ei_flags setting to after initialization

From: Youling Tang <tangyouling@...inos.cn>

`inode->ei_flags` setting and cleaning should be done after initialization,
otherwise the operation is invalid.

Fixes: 9ca4853b98af ("bcachefs: Fix quota support for snapshots")
Signed-off-by: Youling Tang <tangyouling@...inos.cn>
---
 fs/bcachefs/fs.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c
index 0695f478e206..21e5fe296ac8 100644
--- a/fs/bcachefs/fs.c
+++ b/fs/bcachefs/fs.c
@@ -1488,11 +1488,6 @@ static void bch2_vfs_inode_init(struct btree_trans *trans, subvol_inum inum,
 	bch2_iget5_set(&inode->v, &inum);
 	bch2_inode_update_after_write(trans, inode, bi, ~0);
 
-	if (BCH_SUBVOLUME_SNAP(subvol))
-		set_bit(EI_INODE_SNAPSHOT, &inode->ei_flags);
-	else
-		clear_bit(EI_INODE_SNAPSHOT, &inode->ei_flags);
-
 	inode->v.i_blocks	= bi->bi_sectors;
 	inode->v.i_ino		= bi->bi_inum;
 	inode->v.i_rdev		= bi->bi_dev;
@@ -1504,6 +1499,11 @@ static void bch2_vfs_inode_init(struct btree_trans *trans, subvol_inum inum,
 	inode->ei_qid		= bch_qid(bi);
 	inode->ei_subvol	= inum.subvol;
 
+	if (BCH_SUBVOLUME_SNAP(subvol))
+		set_bit(EI_INODE_SNAPSHOT, &inode->ei_flags);
+	else
+		clear_bit(EI_INODE_SNAPSHOT, &inode->ei_flags);
+
 	inode->v.i_mapping->a_ops = &bch_address_space_operations;
 
 	switch (inode->v.i_mode & S_IFMT) {
-- 
2.34.1