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| author | Xin Yin <yinxin.x@bytedance.com> | 2023-07-11 14:21:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-23 13:49:26 +0200 |
| commit | 9e6474e5d70cdc69108e236cb96bc02afc01fcb9 (patch) | |
| tree | a80c3fea3efa66e27146d1b4a656a33aeabdb16a /fs/erofs | |
| parent | dc8158a95fd720990fe6ef47cb1b9487e01b56e5 (diff) | |
| download | linux-9e6474e5d70cdc69108e236cb96bc02afc01fcb9.tar.gz linux-9e6474e5d70cdc69108e236cb96bc02afc01fcb9.tar.bz2 linux-9e6474e5d70cdc69108e236cb96bc02afc01fcb9.zip | |
erofs: fix fsdax unavailability for chunk-based regular files
[ Upstream commit 18bddc5b67038722cb88fcf51fbf41a0277092cb ]
DAX can be used to share page cache between VMs, reducing guest memory
overhead. And chunk based data format is widely used for VM and
container image. So enable dax support for it, make erofs better used
for VM scenarios.
Fixes: c5aa903a59db ("erofs: support reading chunk-based uncompressed files")
Signed-off-by: Xin Yin <yinxin.x@bytedance.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20230711062130.7860-1-yinxin.x@bytedance.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/erofs')
| -rw-r--r-- | fs/erofs/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index 5aadc73d5765..e090bcd46db1 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -186,7 +186,8 @@ static void *erofs_read_inode(struct erofs_buf *buf, inode->i_flags &= ~S_DAX; if (test_opt(&sbi->opt, DAX_ALWAYS) && S_ISREG(inode->i_mode) && - vi->datalayout == EROFS_INODE_FLAT_PLAIN) + (vi->datalayout == EROFS_INODE_FLAT_PLAIN || + vi->datalayout == EROFS_INODE_CHUNK_BASED)) inode->i_flags |= S_DAX; if (!nblks) /* measure inode.i_blocks as generic filesystems */ |