6.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chao Yu <chao@xxxxxxxxxx> [ Upstream commit 5dd00ebda337b9295e7027691fa70540da369ff2 ] f2fs_map_blocks() supports to map continuous holes or preallocated address, we should avoid setting F2FS_MAP_MAPPED for these cases only, otherwise, it may fail f2fs_iomap_begin(), and make direct write fallbacking to use buffered IO and flush, result in performance regression. Fixes: 9f0f6bf42714 ("f2fs: support to map continuous holes or preallocated address") Reported-by: kernel test robot <oliver.sang@xxxxxxxxx> Closes: https://lore.kernel.org/oe-lkp/202409122103.e45aa13b-oliver.sang@xxxxxxxxx Cc: Cyril Hrubis <chrubis@xxxxxxx> Signed-off-by: Chao Yu <chao@xxxxxxxxxx> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- fs/f2fs/data.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 60a5aaefc5b63..1f2f397febcfa 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1677,7 +1677,8 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag) /* reserved delalloc block should be mapped for fiemap. */ if (blkaddr == NEW_ADDR) map->m_flags |= F2FS_MAP_DELALLOC; - if (flag != F2FS_GET_BLOCK_DIO || !is_hole) + /* DIO READ and hole case, should not map the blocks. */ + if (!(flag == F2FS_GET_BLOCK_DIO && is_hole && !map->m_may_create)) map->m_flags |= F2FS_MAP_MAPPED; map->m_pblk = blkaddr; -- 2.43.0