diff mbox series

[RFC,v3,11/26] ext4: also mark extent as delalloc if it's been unwritten

Message ID 20240127015825.1608160-12-yi.zhang@huaweicloud.com (mailing list archive)
State New
Headers show
Series ext4: use iomap for regular file's buffered IO path and enable large foilo | expand

Commit Message

Zhang Yi Jan. 27, 2024, 1:58 a.m. UTC 
From: Zhang Yi <yi.zhang@huawei.com>

Mark extent as delalloc if it's been unwritten, this delalloc flag will
last until write back. It would be useful to indicate the map length
when writing data back after converting regular file's buffered write
path to iomap.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
---
 fs/ext4/inode.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 44033828db44..9ac9bb548a4c 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1742,7 +1742,11 @@  static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
 #ifdef ES_AGGRESSIVE_TEST
 		ext4_map_blocks_es_recheck(NULL, inode, map, &orig_map, 0);
 #endif
-		return retval;
+		if (ext4_es_is_delayed(&es) || ext4_es_is_written(&es))
+			return retval;
+
+		down_read(&EXT4_I(inode)->i_data_sem);
+		goto insert_extent;
 	}
 
 	/*
@@ -1770,9 +1774,11 @@  static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
 				     inode->i_ino, retval, map->m_len);
 			WARN_ON(1);
 		}
-
+insert_extent:
 		status = map->m_flags & EXT4_MAP_UNWRITTEN ?
 				EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
+		if (status == EXTENT_STATUS_UNWRITTEN)
+			status |= EXTENT_STATUS_DELAYED;
 		ext4_es_insert_extent(inode, map->m_lblk, map->m_len,
 				      map->m_pblk, status);
 		up_read(&EXT4_I(inode)->i_data_sem);