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squashfs: Convert squashfs to read_folio 

This is a "weak" conversion which converts straight back to using pages.
A full conversion should be performed at some point, hopefully by
someone familiar with the filesystem.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-04-29 11:12:16 -04:00
parent f91dbd0222
commit 124cfc154f
3 changed files with 7 additions and 5 deletions
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5
fs/squashfs/file.c
View File

@ -444,8 +444,9 @@ static int squashfs_readpage_sparse(struct page *page, int expected)
return 0;
}
static int squashfs_readpage(struct file *file, struct page *page)
static int squashfs_read_folio(struct file *file, struct folio *folio)
{
struct page *page = &folio->page;
struct inode *inode = page->mapping->host;
struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
int index = page->index >> (msblk->block_log - PAGE_SHIFT);
@ -496,5 +497,5 @@ out:
const struct address_space_operations squashfs_aops = {
.readpage = squashfs_readpage
.read_folio = squashfs_read_folio
};

2
fs/squashfs/super.c
View File

@ -148,7 +148,7 @@ static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc)
/*
* squashfs provides 'backing_dev_info' in order to disable read-ahead. For
* squashfs, I/O is not deferred, it is done immediately in readpage,
* squashfs, I/O is not deferred, it is done immediately in read_folio,
* which means the user would always have to wait their own I/O. So the effect
* of readahead is very weak for squashfs. squashfs_bdi_init will set
* sb->s_bdi->ra_pages and sb->s_bdi->io_pages to 0 and close readahead for

5
fs/squashfs/symlink.c
View File

@ -30,8 +30,9 @@
#include "squashfs.h"
#include "xattr.h"
static int squashfs_symlink_readpage(struct file *file, struct page *page)
static int squashfs_symlink_read_folio(struct file *file, struct folio *folio)
{
struct page *page = &folio->page;
struct inode *inode = page->mapping->host;
struct super_block *sb = inode->i_sb;
struct squashfs_sb_info *msblk = sb->s_fs_info;
@ -101,7 +102,7 @@ error_out:
const struct address_space_operations squashfs_symlink_aops = {
.readpage = squashfs_symlink_readpage
.read_folio = squashfs_symlink_read_folio
};
const struct inode_operations squashfs_symlink_inode_ops = {