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ntfs3: convert ntfs_zero_range() to use a folio

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Use the folio API throughout, saving six hidden calls to compound_head().

Link: https://lkml.kernel.org/r/20231016201114.1928083-21-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Pankaj Raghav <p.raghav@samsung.com>
Cc: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2023-10-16 21:11:07 +01:00 committed by Andrew Morton
parent 24a7b35285
commit c3f4200ac6
1 changed files with 16 additions and 15 deletions
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31
fs/ntfs3/file.c
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@ -187,7 +187,7 @@ static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
struct buffer_head *head, *bh;
u32 bh_next, bh_off, to;
sector_t iblock;
struct page *page;
struct folio *folio;
for (; idx < idx_end; idx += 1, from = 0) {
page_off = (loff_t)idx << PAGE_SHIFT;
@ -195,16 +195,17 @@ static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
PAGE_SIZE;
iblock = page_off >> inode->i_blkbits;
page = find_or_create_page(mapping, idx,
mapping_gfp_constraint(mapping,
~__GFP_FS));
if (!page)
return -ENOMEM;
folio = __filemap_get_folio(mapping, idx,
FGP_LOCK | FGP_ACCESSED | FGP_CREAT,
mapping_gfp_constraint(mapping, ~__GFP_FS));
if (IS_ERR(folio))
return PTR_ERR(folio);
if (!page_has_buffers(page))
create_empty_buffers(page, blocksize, 0);
head = folio_buffers(folio);
if (!head)
head = folio_create_empty_buffers(folio, blocksize, 0);
bh = head = page_buffers(page);
bh = head;
bh_off = 0;
do {
bh_next = bh_off + blocksize;
@ -220,14 +221,14 @@ static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
}
/* Ok, it's mapped. Make sure it's up-to-date. */
if (PageUptodate(page))
if (folio_test_uptodate(folio))
set_buffer_uptodate(bh);
if (!buffer_uptodate(bh)) {
err = bh_read(bh, 0);
if (err < 0) {
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
goto out;
}
}
@ -237,10 +238,10 @@ static int ntfs_zero_range(struct inode *inode, u64 vbo, u64 vbo_to)
} while (bh_off = bh_next, iblock += 1,
head != (bh = bh->b_this_page));
zero_user_segment(page, from, to);
folio_zero_segment(folio, from, to);
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
cond_resched();
}
out: