linux-kernel - [PATCH AUTOSEL 6.14 31/39] fs/ext4: use sleeping version of sb_find_get

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Message-Id: <20250429235006.536648-31-sashal@kernel.org>
Date: Tue, 29 Apr 2025 19:49:58 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Davidlohr Bueso <dave@...olabs.net>,
	Jan Kara <jack@...e.cz>,
	kdevops@...ts.linux.dev,
	Luis Chamberlain <mcgrof@...nel.org>,
	Christian Brauner <brauner@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	tytso@....edu,
	adilger.kernel@...ger.ca,
	linux-ext4@...r.kernel.org
Subject: [PATCH AUTOSEL 6.14 31/39] fs/ext4: use sleeping version of sb_find_get_block()

From: Davidlohr Bueso <dave@...olabs.net>

[ Upstream commit 6e8f57fd09c9fb569d10b2ccc3878155b702591a ]

Enable ext4_free_blocks() to use it, which has a cond_resched to begin
with. Convert to the new nonatomic flavor to benefit from potential
performance benefits and adapt in the future vs migration such that
semantics are kept.

Suggested-by: Jan Kara <jack@...e.cz>
Reviewed-by: Jan Kara <jack@...e.cz>
Signed-off-by: Davidlohr Bueso <dave@...olabs.net>
Link: https://kdevops.org/ext4/v6.15-rc2.html # [0]
Link: https://lore.kernel.org/all/aAAEvcrmREWa1SKF@bombadil.infradead.org/ # [1]
Link: https://lore.kernel.org/20250418015921.132400-7-dave@stgolabs.net
Tested-by: kdevops@...ts.linux.dev
Reviewed-by: Luis Chamberlain <mcgrof@...nel.org>
Signed-off-by: Christian Brauner <brauner@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/ext4/mballoc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index b25a27c866969..d6f1e61c6dc82 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -6644,7 +6644,8 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
 		for (i = 0; i < count; i++) {
 			cond_resched();
 			if (is_metadata)
-				bh = sb_find_get_block(inode->i_sb, block + i);
+				bh = sb_find_get_block_nonatomic(inode->i_sb,
+								 block + i);
 			ext4_forget(handle, is_metadata, inode, bh, block + i);
 		}
 	}
-- 
2.39.5