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Message-ID: <20240817101146.2347378-2-lizetao1@huawei.com>
Date: Sat, 17 Aug 2024 18:11:46 +0800
From: Li Zetao <lizetao1@...wei.com>
To: <phillip@...ashfs.org.uk>, <willy@...radead.org>
CC: <lizetao1@...wei.com>, <squashfs-devel@...ts.sourceforge.net>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH -next 2/2] squashfs: convert squashfs_read_folio to use folio APIs
In order to remote page APIs and index field in structure page [1],
this patch convert squashfs_read_folio to use folio APIs, switch from
kmap_atomic to kmap_local and use folio_end_read() to set uptodate
and unlock folio.
[1]: https://lore.kernel.org/all/Zp8fgUSIBGQ1TN0D@casper.infradead.org/
Cc: Matthew Wilcox <willy@...radead.org>
Signed-off-by: Li Zetao <lizetao1@...wei.com>
---
fs/squashfs/file.c | 27 ++++++++++++---------------
1 file changed, 12 insertions(+), 15 deletions(-)
diff --git a/fs/squashfs/file.c b/fs/squashfs/file.c
index 893043ecf973..8c80d77a6115 100644
--- a/fs/squashfs/file.c
+++ b/fs/squashfs/file.c
@@ -446,10 +446,9 @@ static int squashfs_readpage_sparse(struct page *page, int expected)
static int squashfs_read_folio(struct file *file, struct folio *folio)
{
- struct page *page = &folio->page;
- struct inode *inode = page->mapping->host;
+ struct inode *inode = folio_inode(folio);
struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
- int index = page->index >> (msblk->block_log - PAGE_SHIFT);
+ int index = folio->index >> (msblk->block_log - PAGE_SHIFT);
int file_end = i_size_read(inode) >> msblk->block_log;
int expected = index == file_end ?
(i_size_read(inode) & (msblk->block_size - 1)) :
@@ -457,10 +456,10 @@ static int squashfs_read_folio(struct file *file, struct folio *folio)
int res = 0;
void *pageaddr;
- TRACE("Entered squashfs_readpage, page index %lx, start block %llx\n",
- page->index, squashfs_i(inode)->start);
+ TRACE("Entered squashfs_readpage, folio index %lx, start block %llx\n",
+ folio->index, squashfs_i(inode)->start);
- if (page->index >= ((i_size_read(inode) + PAGE_SIZE - 1) >>
+ if (folio->index >= ((i_size_read(inode) + PAGE_SIZE - 1) >>
PAGE_SHIFT))
goto out;
@@ -473,23 +472,21 @@ static int squashfs_read_folio(struct file *file, struct folio *folio)
goto out;
if (res == 0)
- res = squashfs_readpage_sparse(page, expected);
+ res = squashfs_readpage_sparse(&folio->page, expected);
else
- res = squashfs_readpage_block(page, block, res, expected);
+ res = squashfs_readpage_block(&folio->page, block, res, expected);
} else
- res = squashfs_readpage_fragment(page, expected);
+ res = squashfs_readpage_fragment(&folio->page, expected);
if (!res)
return 0;
out:
- pageaddr = kmap_atomic(page);
+ pageaddr = kmap_local_folio(folio, 0);
memset(pageaddr, 0, PAGE_SIZE);
- kunmap_atomic(pageaddr);
- flush_dcache_page(page);
- if (res == 0)
- SetPageUptodate(page);
- unlock_page(page);
+ kunmap_local(pageaddr);
+ flush_dcache_folio(folio);
+ folio_end_read(folio, res == 0);
return res;
}
--
2.34.1
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