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fs: Convert mpage_readpage to mpage_read_folio 

Conflicts: drop changes to fs/hpfs/file.c, fs/ntfs3/inode.c -
	unsupported configs

Bugzilla: https://bugzilla.redhat.com/2160210

commit f132ab7d3ab03c5bae28d31fb80ba77c4da05500
Author: Matthew Wilcox (Oracle) <willy@infradead.org>
Date:   Fri Apr 29 11:47:39 2022 -0400

    fs: Convert mpage_readpage to mpage_read_folio

    mpage_readpage still works in terms of pages, and has not been audited
    for correctness with large folios, so include an assertion that the
    filesystem is not passing it large folios.  Convert all the filesystems
    to call mpage_read_folio() instead of mpage_readpage().

    Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

Signed-off-by: Chris von Recklinghausen <crecklin@redhat.com>
This commit is contained in:
Chris von Recklinghausen 2023-03-24 07:43:41 -04:00
parent 5775a08c4e
commit 7d430defea
12 changed files with 41 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/exfat/inode.c
View File

@ -358,9 +358,9 @@ unlock_ret:
return err;
}
static int exfat_readpage(struct file *file, struct page *page)
static int exfat_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, exfat_get_block);
return mpage_read_folio(folio, exfat_get_block);
}
static void exfat_readahead(struct readahead_control *rac)
@ -493,7 +493,7 @@ int exfat_block_truncate_page(struct inode *inode, loff_t from)
static const struct address_space_operations exfat_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
.readpage = exfat_readpage,
.read_folio = exfat_read_folio,
.readahead = exfat_readahead,
.writepage = exfat_writepage,
.writepages = exfat_writepages,

8
fs/ext2/inode.c
View File

@ -869,9 +869,9 @@ static int ext2_writepage(struct page *page, struct writeback_control *wbc)
return block_write_full_page(page, ext2_get_block, wbc);
}
static int ext2_readpage(struct file *file, struct page *page)
static int ext2_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, ext2_get_block);
return mpage_read_folio(folio, ext2_get_block);
}
static void ext2_readahead(struct readahead_control *rac)
@ -960,7 +960,7 @@ ext2_dax_writepages(struct address_space *mapping, struct writeback_control *wbc
const struct address_space_operations ext2_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
.readpage = ext2_readpage,
.read_folio = ext2_read_folio,
.readahead = ext2_readahead,
.writepage = ext2_writepage,
.write_begin = ext2_write_begin,
@ -976,7 +976,7 @@ const struct address_space_operations ext2_aops = {
const struct address_space_operations ext2_nobh_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
.readpage = ext2_readpage,
.read_folio = ext2_read_folio,
.readahead = ext2_readahead,
.writepage = ext2_nobh_writepage,
.write_begin = ext2_nobh_write_begin,

6
fs/fat/inode.c
View File

@ -205,9 +205,9 @@ static int fat_writepages(struct address_space *mapping,
return mpage_writepages(mapping, wbc, fat_get_block);
}
static int fat_readpage(struct file *file, struct page *page)
static int fat_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, fat_get_block);
return mpage_read_folio(folio, fat_get_block);
}
static void fat_readahead(struct readahead_control *rac)
@ -344,7 +344,7 @@ int fat_block_truncate_page(struct inode *inode, loff_t from)
static const struct address_space_operations fat_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
.readpage = fat_readpage,
.read_folio = fat_read_folio,
.readahead = fat_readahead,
.writepage = fat_writepage,
.writepages = fat_writepages,

15
fs/gfs2/aops.c
View File

@ -453,7 +453,7 @@ static int __gfs2_readpage(void *file, struct page *page)
error = stuffed_readpage(ip, page);
unlock_page(page);
} else {
error = mpage_readpage(page, gfs2_block_map);
error = mpage_read_folio(folio, gfs2_block_map);
}
if (unlikely(gfs2_withdrawn(sdp)))
@ -463,14 +463,13 @@ static int __gfs2_readpage(void *file, struct page *page)
}
/**
* gfs2_readpage - read a page of a file
* gfs2_read_folio - read a folio from a file
* @file: The file to read
* @page: The page of the file
* @folio: The folio in the file
*/
static int gfs2_readpage(struct file *file, struct page *page)
static int gfs2_read_folio(struct file *file, struct folio *folio)
{
return __gfs2_readpage(file, page);
return __gfs2_readpage(file, &folio->page);
}
/**
@ -745,7 +744,7 @@ cannot_release:
static const struct address_space_operations gfs2_aops = {
.writepages = gfs2_writepages,
.readpage = gfs2_readpage,
.read_folio = gfs2_read_folio,
.readahead = gfs2_readahead,
.dirty_folio = filemap_dirty_folio,
.releasepage = iomap_releasepage,
@ -760,7 +759,7 @@ static const struct address_space_operations gfs2_aops = {
static const struct address_space_operations gfs2_jdata_aops = {
.writepage = gfs2_jdata_writepage,
.writepages = gfs2_jdata_writepages,
.readpage = gfs2_readpage,
.read_folio = gfs2_read_folio,
.readahead = gfs2_readahead,
.dirty_folio = jdata_dirty_folio,
.bmap = gfs2_bmap,

2
fs/iomap/buffered-io.c
View File

@ -295,7 +295,7 @@ static loff_t iomap_readpage_iter(const struct iomap_iter *iter,
/*
* If the bio_alloc fails, try it again for a single page to
* avoid having to deal with partial page reads. This emulates
* what do_mpage_readpage does.
* what do_mpage_read_folio does.
*/
if (!ctx->bio) {
ctx->bio = bio_alloc(iomap->bdev, 1, REQ_OP_READ,

6
fs/isofs/inode.c
View File

@ -1175,9 +1175,9 @@ struct buffer_head *isofs_bread(struct inode *inode, sector_t block)
return sb_bread(inode->i_sb, blknr);
}
static int isofs_readpage(struct file *file, struct page *page)
static int isofs_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, isofs_get_block);
return mpage_read_folio(folio, isofs_get_block);
}
static void isofs_readahead(struct readahead_control *rac)
@ -1191,7 +1191,7 @@ static sector_t _isofs_bmap(struct address_space *mapping, sector_t block)
}
static const struct address_space_operations isofs_aops = {
.readpage = isofs_readpage,
.read_folio = isofs_read_folio,
.readahead = isofs_readahead,
.bmap = _isofs_bmap
};

6
fs/jfs/inode.c
View File

@ -292,9 +292,9 @@ static int jfs_writepages(struct address_space *mapping,
return mpage_writepages(mapping, wbc, jfs_get_block);
}
static int jfs_readpage(struct file *file, struct page *page)
static int jfs_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, jfs_get_block);
return mpage_read_folio(folio, jfs_get_block);
}
static void jfs_readahead(struct readahead_control *rac)
@ -359,7 +359,7 @@ static ssize_t jfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
const struct address_space_operations jfs_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
.readpage = jfs_readpage,
.read_folio = jfs_read_folio,
.readahead = jfs_readahead,
.writepage = jfs_writepage,
.writepages = jfs_writepages,

8
fs/mpage.c
View File

@ -364,20 +364,22 @@ EXPORT_SYMBOL(mpage_readahead);
/*
* This isn't called much at all
*/
int mpage_readpage(struct page *page, get_block_t get_block)
int mpage_read_folio(struct folio *folio, get_block_t get_block)
{
struct mpage_readpage_args args = {
.page = page,
.page = &folio->page,
.nr_pages = 1,
.get_block = get_block,
};
VM_BUG_ON_FOLIO(folio_test_large(folio), folio);
args.bio = do_mpage_readpage(&args);
if (args.bio)
mpage_bio_submit(args.bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpage);
EXPORT_SYMBOL(mpage_read_folio);
/*
* Writing is not so simple.

10
fs/nilfs2/inode.c
View File

@ -136,14 +136,14 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
}
/**
* nilfs_readpage() - implement readpage() method of nilfs_aops {}
* nilfs_read_folio() - implement read_folio() method of nilfs_aops {}
* address_space_operations.
* @file - file struct of the file to be read
* @page - the page to be read
* @folio - the folio to be read
*/
static int nilfs_readpage(struct file *file, struct page *page)
static int nilfs_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, nilfs_get_block);
return mpage_read_folio(folio, nilfs_get_block);
}
static void nilfs_readahead(struct readahead_control *rac)
@ -296,7 +296,7 @@ nilfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
const struct address_space_operations nilfs_aops = {
.writepage = nilfs_writepage,
.readpage = nilfs_readpage,
.read_folio = nilfs_read_folio,
.writepages = nilfs_writepages,
.set_page_dirty = nilfs_set_page_dirty,
.readahead = nilfs_readahead,

6
fs/qnx6/inode.c
View File

@ -94,9 +94,9 @@ static int qnx6_check_blockptr(__fs32 ptr)
return 1;
}
static int qnx6_readpage(struct file *file, struct page *page)
static int qnx6_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, qnx6_get_block);
return mpage_read_folio(folio, qnx6_get_block);
}
static void qnx6_readahead(struct readahead_control *rac)
@ -496,7 +496,7 @@ static sector_t qnx6_bmap(struct address_space *mapping, sector_t block)
return generic_block_bmap(mapping, block, qnx6_get_block);
}
static const struct address_space_operations qnx6_aops = {
.readpage = qnx6_readpage,
.read_folio = qnx6_read_folio,
.readahead = qnx6_readahead,
.bmap = qnx6_bmap
};

6
fs/udf/inode.c
View File

@ -193,9 +193,9 @@ static int udf_writepages(struct address_space *mapping,
return mpage_writepages(mapping, wbc, udf_get_block);
}
static int udf_readpage(struct file *file, struct page *page)
static int udf_read_folio(struct file *file, struct folio *folio)
{
return mpage_readpage(page, udf_get_block);
return mpage_read_folio(folio, udf_get_block);
}
static void udf_readahead(struct readahead_control *rac)
@ -237,7 +237,7 @@ static sector_t udf_bmap(struct address_space *mapping, sector_t block)
const struct address_space_operations udf_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
.readpage = udf_readpage,
.read_folio = udf_read_folio,
.readahead = udf_readahead,
.writepage = udf_writepage,
.writepages = udf_writepages,

2
include/linux/mpage.h
View File

@ -16,7 +16,7 @@ struct writeback_control;
struct readahead_control;
void mpage_readahead(struct readahead_control *, get_block_t get_block);
int mpage_readpage(struct page *page, get_block_t get_block);
int mpage_read_folio(struct folio *folio, get_block_t get_block);
int mpage_writepages(struct address_space *mapping,
struct writeback_control *wbc, get_block_t get_block);
int mpage_writepage(struct page *page, get_block_t *get_block,