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udf: Convert udf_page_mkwrite() to use a folio

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Convert the vm_fault page to a folio, then use it throughout.
Replaces five calls to compound_head() with one.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20240417150416.752929-7-willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-04-17 16:04:12 +01:00 committed by Jan Kara
parent 2f1c1bd7b1
commit f5985ef281
1 changed files with 10 additions and 10 deletions
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20
fs/udf/file.c
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@ -39,7 +39,7 @@ static vm_fault_t udf_page_mkwrite(struct vm_fault *vmf)
struct vm_area_struct *vma = vmf->vma;
struct inode *inode = file_inode(vma->vm_file);
struct address_space *mapping = inode->i_mapping;
struct page *page = vmf->page;
struct folio *folio = page_folio(vmf->page);
loff_t size;
unsigned int end;
vm_fault_t ret = VM_FAULT_LOCKED;
@ -48,31 +48,31 @@ static vm_fault_t udf_page_mkwrite(struct vm_fault *vmf)
sb_start_pagefault(inode->i_sb);
file_update_time(vma->vm_file);
filemap_invalidate_lock_shared(mapping);
lock_page(page);
folio_lock(folio);
size = i_size_read(inode);
if (page->mapping != inode->i_mapping || page_offset(page) >= size) {
unlock_page(page);
if (folio->mapping != inode->i_mapping || folio_pos(folio) >= size) {
folio_unlock(folio);
ret = VM_FAULT_NOPAGE;
goto out_unlock;
}
/* Space is already allocated for in-ICB file */
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
goto out_dirty;
if (page->index == size >> PAGE_SHIFT)
if (folio->index == size >> PAGE_SHIFT)
end = size & ~PAGE_MASK;
else
end = PAGE_SIZE;
err = __block_write_begin(page, 0, end, udf_get_block);
err = __block_write_begin(&folio->page, 0, end, udf_get_block);
if (err) {
unlock_page(page);
folio_unlock(folio);
ret = vmf_fs_error(err);
goto out_unlock;
}
block_commit_write(page, 0, end);
block_commit_write(&folio->page, 0, end);
out_dirty:
set_page_dirty(page);
wait_for_stable_page(page);
folio_mark_dirty(folio);
folio_wait_stable(folio);
out_unlock:
filemap_invalidate_unlock_shared(mapping);
sb_end_pagefault(inode->i_sb);