linux-kernel - [PATCH v3 21/22] erofs: implement fscache-based data readahead for inline layout

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Message-Id: <20220209060108.43051-22-jefflexu@linux.alibaba.com>
Date:   Wed,  9 Feb 2022 14:01:07 +0800
From:   Jeffle Xu <jefflexu@...ux.alibaba.com>
To:     dhowells@...hat.com, linux-cachefs@...hat.com, xiang@...nel.org,
        chao@...nel.org, linux-erofs@...ts.ozlabs.org
Cc:     torvalds@...ux-foundation.org, gregkh@...uxfoundation.org,
        willy@...radead.org, linux-fsdevel@...r.kernel.org,
        joseph.qi@...ux.alibaba.com, bo.liu@...ux.alibaba.com,
        tao.peng@...ux.alibaba.com, gerry@...ux.alibaba.com,
        eguan@...ux.alibaba.com, linux-kernel@...r.kernel.org
Subject: [PATCH v3 21/22] erofs: implement fscache-based data readahead for inline layout

Signed-off-by: Jeffle Xu <jefflexu@...ux.alibaba.com>
---
 fs/erofs/fscache.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c
index ef5eef33e3d5..003f9abdaf1b 100644
--- a/fs/erofs/fscache.c
+++ b/fs/erofs/fscache.c
@@ -198,6 +198,7 @@ static int erofs_fscache_readpage(struct file *file, struct page *page)
 enum erofs_fscache_readahead_type {
 	EROFS_FSCACHE_READAHEAD_TYPE_HOLE,
 	EROFS_FSCACHE_READAHEAD_TYPE_NOINLINE,
+	EROFS_FSCACHE_READAHEAD_TYPE_INLINE,
 };
 
 static int erofs_fscache_do_readahead(struct readahead_control *rac,
@@ -231,6 +232,9 @@ static int erofs_fscache_do_readahead(struct readahead_control *rac,
 			ret = erofs_fscache_readpage_noinline(page, fsmap);
 			fsmap->m_pa += EROFS_BLKSIZ;
 			break;
+		case EROFS_FSCACHE_READAHEAD_TYPE_INLINE:
+			ret = erofs_fscache_readpage_inline(page, fsmap);
+			break;
 		default:
 			DBG_BUGON(1);
 			return -EINVAL;
@@ -285,6 +289,10 @@ static void erofs_fscache_readahead(struct readahead_control *rac)
 				ret = erofs_fscache_do_readahead(rac, &fsmap,
 					EROFS_FSCACHE_READAHEAD_TYPE_NOINLINE);
 				break;
+			case EROFS_INODE_FLAT_INLINE:
+				ret = erofs_fscache_do_readahead(rac, &fsmap,
+					EROFS_FSCACHE_READAHEAD_TYPE_INLINE);
+				break;
 			default:
 				DBG_BUGON(1);
 				return;
-- 
2.27.0