linux-kernel - [PATCH] f2fs: allocate HOT

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Message-ID: <20250827215222.1615844-1-jaegeuk@kernel.org>
Date: Wed, 27 Aug 2025 21:52:22 +0000
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Cc: Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH] f2fs: allocate HOT_DATA for IPU writes

Let's split IPU writes in hot data area to improve the GC efficiency.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/segment.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index e0f6589c6a1c..bb79dad55ac9 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3688,7 +3688,8 @@ static int __get_segment_type_6(struct f2fs_io_info *fio)
 
 		if (file_is_hot(inode) ||
 				is_inode_flag_set(inode, FI_HOT_DATA) ||
-				f2fs_is_cow_file(inode))
+				f2fs_is_cow_file(inode) ||
+				is_inode_flag_set(inode, FI_NEED_IPU))
 			return CURSEG_HOT_DATA;
 		return f2fs_rw_hint_to_seg_type(F2FS_I_SB(inode),
 						inode->i_write_hint);
-- 
2.51.0.318.gd7df087d1a-goog