linux-kernel - [PATCH 2/2] erofs: enable large folio support for non-compressed format

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Message-Id: <20221126005756.7662-3-jefflexu@linux.alibaba.com>
Date:   Sat, 26 Nov 2022 08:57:56 +0800
From:   Jingbo Xu <jefflexu@...ux.alibaba.com>
To:     xiang@...nel.org, chao@...nel.org, linux-erofs@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] erofs: enable large folio support for non-compressed format

Enable large folio in both device and fscache mode.  Then the readahead
routine will pass down large folio containing multiple pages.

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

Signed-off-by: Jingbo Xu <jefflexu@...ux.alibaba.com>
---
 fs/erofs/fscache.c | 1 +
 fs/erofs/inode.c   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c
index 0643b205c7eb..d2dd58ce312b 100644
--- a/fs/erofs/fscache.c
+++ b/fs/erofs/fscache.c
@@ -436,6 +436,7 @@ struct erofs_fscache *erofs_fscache_acquire_cookie(struct super_block *sb,
 		inode->i_size = OFFSET_MAX;
 		inode->i_mapping->a_ops = &erofs_fscache_meta_aops;
 		mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
+		mapping_set_large_folios(inode->i_mapping);
 
 		ctx->inode = inode;
 	}
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c
index ad2a82f2eb4c..85932086d23f 100644
--- a/fs/erofs/inode.c
+++ b/fs/erofs/inode.c
@@ -295,6 +295,7 @@ static int erofs_fill_inode(struct inode *inode)
 		goto out_unlock;
 	}
 	inode->i_mapping->a_ops = &erofs_raw_access_aops;
+	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;
-- 
2.19.1.6.gb485710b