Commit ce529cc2 authored by Jingbo Xu's avatar Jingbo Xu Committed by Gao Xiang
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erofs: enable large folios for iomap mode 



Enable large folios for iomap mode.  Then the readahead routine will
pass down large folios containing multiple pages.

Let's enable this for non-compressed format for now, until the
compression part supports large folios later.

When large folios supported, the iomap routine will allocate iomap_page
for each large folio and thus we need iomap_release_folio() and
iomap_invalidate_folio() to free iomap_page when these folios get
reclaimed or invalidated.

Signed-off-by: default avatarJingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: default avatarChao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20221130060455.44532-1-jefflexu@linux.alibaba.com


Signed-off-by: default avatarGao Xiang <hsiangkao@linux.alibaba.com>
parent eb708140

fs/erofs/data.c

+2 −0
Original line number Diff line number Diff line
@@ -403,6 +403,8 @@ const struct address_space_operations erofs_raw_access_aops = { 
	.readahead = erofs_readahead,

	.bmap = erofs_bmap,

	.direct_IO = noop_direct_IO,

	.release_folio = iomap_release_folio,

	.invalidate_folio = iomap_invalidate_folio,

};



#ifdef CONFIG_FS_DAX

fs/erofs/inode.c

+2 −0
Original line number Diff line number Diff line
@@ -295,6 +295,8 @@ 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))

		inode->i_mapping->a_ops = &erofs_fscache_access_aops;