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fs: Convert aops->write_begin to take a folio

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Convert all callers from working on a page to working on one page
of a folio (support for working on an entire folio can come later).
Removes a lot of folio->page->folio conversions.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2024-07-15 14:24:01 -04:00
committed by Christian Brauner
parent a225800f32
commit 1da86618bd
58 changed files with 190 additions and 207 deletions
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28
fs/buffer.c
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@@ -2222,7 +2222,7 @@ static void __block_commit_write(struct folio *folio, size_t from, size_t to)
* The filesystem needs to handle block truncation upon failure.
*/
int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len,
struct page **pagep, get_block_t *get_block)
struct folio **foliop, get_block_t *get_block)
{
pgoff_t index = pos >> PAGE_SHIFT;
struct folio *folio;
@@ -2240,7 +2240,7 @@ int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len,
folio = NULL;
}
*pagep = &folio->page;
*foliop = folio;
return status;
}
EXPORT_SYMBOL(block_write_begin);
@@ -2467,7 +2467,7 @@ int generic_cont_expand_simple(struct inode *inode, loff_t size)
{
struct address_space *mapping = inode->i_mapping;
const struct address_space_operations *aops = mapping->a_ops;
struct page *page;
struct folio *folio;
void *fsdata = NULL;
int err;
@@ -2475,11 +2475,11 @@ int generic_cont_expand_simple(struct inode *inode, loff_t size)
if (err)
goto out;
err = aops->write_begin(NULL, mapping, size, 0, &page, &fsdata);
err = aops->write_begin(NULL, mapping, size, 0, &folio, &fsdata);
if (err)
goto out;
err = aops->write_end(NULL, mapping, size, 0, 0, page_folio(page), fsdata);
err = aops->write_end(NULL, mapping, size, 0, 0, folio, fsdata);
BUG_ON(err > 0);
out:
@@ -2493,7 +2493,7 @@ static int cont_expand_zero(struct file *file, struct address_space *mapping,
struct inode *inode = mapping->host;
const struct address_space_operations *aops = mapping->a_ops;
unsigned int blocksize = i_blocksize(inode);
struct page *page;
struct folio *folio;
void *fsdata = NULL;
pgoff_t index, curidx;
loff_t curpos;
@@ -2512,12 +2512,12 @@ static int cont_expand_zero(struct file *file, struct address_space *mapping,
len = PAGE_SIZE - zerofrom;
err = aops->write_begin(file, mapping, curpos, len,
&page, &fsdata);
&folio, &fsdata);
if (err)
goto out;
zero_user(page, zerofrom, len);
folio_zero_range(folio, offset_in_folio(folio, curpos), len);
err = aops->write_end(file, mapping, curpos, len, len,
page_folio(page), fsdata);
folio, fsdata);
if (err < 0)
goto out;
BUG_ON(err != len);
@@ -2545,12 +2545,12 @@ static int cont_expand_zero(struct file *file, struct address_space *mapping,
len = offset - zerofrom;
err = aops->write_begin(file, mapping, curpos, len,
&page, &fsdata);
&folio, &fsdata);
if (err)
goto out;
zero_user(page, zerofrom, len);
folio_zero_range(folio, offset_in_folio(folio, curpos), len);
err = aops->write_end(file, mapping, curpos, len, len,
page_folio(page), fsdata);
folio, fsdata);
if (err < 0)
goto out;
BUG_ON(err != len);
@@ -2566,7 +2566,7 @@ out:
*/
int cont_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len,
struct page **pagep, void **fsdata,
struct folio **foliop, void **fsdata,
get_block_t *get_block, loff_t *bytes)
{
struct inode *inode = mapping->host;
@@ -2584,7 +2584,7 @@ int cont_write_begin(struct file *file, struct address_space *mapping,
(*bytes)++;
}
return block_write_begin(mapping, pos, len, pagep, get_block);
return block_write_begin(mapping, pos, len, foliop, get_block);
}
EXPORT_SYMBOL(cont_write_begin);