From ce529cc25b184e93397b94a8a322128fc0095cbb Mon Sep 17 00:00:00 2001
From: Jingbo Xu <jefflexu@linux.alibaba.com>
Date: Wed, 30 Nov 2022 14:04:55 +0800
Subject: [PATCH] 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: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20221130060455.44532-1-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
---
fs/erofs/data.c | 2 ++
fs/erofs/inode.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index fe8ac0e163f7e..c9526c627dda3 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -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
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c
index ad2a82f2eb4cd..e457b8a59ee7c 100644
--- a/fs/erofs/inode.c
+++ b/fs/erofs/inode.c
@@ -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;
--
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