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bcachefs: Use attach_page_private and detach_page_private

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These recently added helpers simplify the code.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Matthew Wilcox (Oracle) 2020-11-05 15:58:38 +00:00 committed by Kent Overstreet
parent 96fee47e44
commit 00276f9f34
1 changed files with 4 additions and 25 deletions
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29
fs/bcachefs/fs-io.c
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@ -273,28 +273,13 @@ static inline struct bch_page_state *bch2_page_state(struct page *page)
/* for newly allocated pages: */
static void __bch2_page_state_release(struct page *page)
{
struct bch_page_state *s = __bch2_page_state(page);
if (!s)
return;
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
kfree(s);
kfree(detach_page_private(page));
}
static void bch2_page_state_release(struct page *page)
{
struct bch_page_state *s = bch2_page_state(page);
if (!s)
return;
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
kfree(s);
EBUG_ON(!PageLocked(page));
__bch2_page_state_release(page);
}
/* for newly allocated pages: */
@ -308,13 +293,7 @@ static struct bch_page_state *__bch2_page_state_create(struct page *page,
return NULL;
spin_lock_init(&s->lock);
/*
* migrate_page_move_mapping() assumes that pages with private data
* have their count elevated by 1.
*/
get_page(page);
set_page_private(page, (unsigned long) s);
SetPagePrivate(page);
attach_page_private(page, s);
return s;
}