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fuse: convert fuse_notify_store to use folios

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This function creates pages in an inode and copies data into them,
update the function to use a folio instead of a page, and use the
appropriate folio helpers.

[SzM: use filemap_grab_folio()]

[Hau Tao: The third argument of folio_zero_range() should be the length to
be zeroed, not the total length. Fix it by using folio_zero_segment()
instead in fuse_notify_store()]

Reviewed-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Josef Bacik 2024-09-30 09:45:18 -04:00 committed by Miklos Szeredi
parent 71e10dc2f5
commit 8807f117be
1 changed files with 12 additions and 11 deletions
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23
fs/fuse/dev.c
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@ -1654,24 +1654,25 @@ static int fuse_notify_store(struct fuse_conn *fc, unsigned int size,
num = outarg.size;
while (num) {
struct folio *folio;
struct page *page;
unsigned int this_num;
err = -ENOMEM;
page = find_or_create_page(mapping, index,
mapping_gfp_mask(mapping));
if (!page)
folio = filemap_grab_folio(mapping, index);
err = PTR_ERR(folio);
if (IS_ERR(folio))
goto out_iput;
this_num = min_t(unsigned, num, PAGE_SIZE - offset);
page = &folio->page;
this_num = min_t(unsigned, num, folio_size(folio) - offset);
err = fuse_copy_page(cs, &page, offset, this_num, 0);
if (!PageUptodate(page) && !err && offset == 0 &&
(this_num == PAGE_SIZE || file_size == end)) {
zero_user_segment(page, this_num, PAGE_SIZE);
SetPageUptodate(page);
if (!folio_test_uptodate(folio) && !err && offset == 0 &&
(this_num == folio_size(folio) || file_size == end)) {
folio_zero_segment(folio, this_num, folio_size(folio));
folio_mark_uptodate(folio);
}
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
if (err)
goto out_iput;