Commit e6687b89 authored by Jingbo Xu's avatar Jingbo Xu Committed by Gao Xiang
Browse files

erofs: enable large folios for fscache mode 



Enable large folios for fscache mode.  Enable this feature for
non-compressed format for now, until the compression part supports large
folios later.

One thing worth noting is that, the feature is not enabled for the meta
data routine since meta inodes don't need large folios for now, nor do
they support readahead yet.

Also document this new feature.

Signed-off-by: default avatarJingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: default avatarJia Zhu <zhujia.zj@bytedance.com>
Link: https://lore.kernel.org/r/20221201074256.16639-3-jefflexu@linux.alibaba.com


Signed-off-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
parent be62c519

Documentation/filesystems/erofs.rst

+2 −0
Original line number Diff line number Diff line
@@ -73,6 +73,8 @@ Here are the main features of EROFS: 


 - Support merging tail-end data into a special inode as fragments.



 - Support large folios for uncompressed files.



 - Support direct I/O on uncompressed files to avoid double caching for loop

   devices;

fs/erofs/inode.c

+1 −2
Original line number Diff line number Diff line
@@ -295,7 +295,6 @@ static int erofs_fill_inode(struct inode *inode) 
		goto out_unlock;

	}

	inode->i_mapping->a_ops = &erofs_raw_access_aops;

	if (!erofs_is_fscache_mode(inode->i_sb))

	mapping_set_large_folios(inode->i_mapping);

#ifdef CONFIG_EROFS_FS_ONDEMAND

	if (erofs_is_fscache_mode(inode->i_sb))