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fs/buffer.c: use attach/detach_page_private 

Since the new pair function is introduced, we can call them to clean the
code in buffer.c.

Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/20200517214718.468-5-guoqing.jiang@cloud.ionos.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Guoqing Jiang 2020-06-01 21:47:48 -07:00 committed by Linus Torvalds
parent d1b89bc042
commit 45dcfc2732
1 changed files with 4 additions and 12 deletions
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16
fs/buffer.c
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@ -123,14 +123,6 @@ void __wait_on_buffer(struct buffer_head * bh)
}
EXPORT_SYMBOL(__wait_on_buffer);
static void
__clear_page_buffers(struct page *page)
{
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
}
static void buffer_io_error(struct buffer_head *bh, char *msg)
{
if (!test_bit(BH_Quiet, &bh->b_state))
@ -906,7 +898,7 @@ link_dev_buffers(struct page *page, struct buffer_head *head)
bh = bh->b_this_page;
} while (bh);
tail->b_this_page = head;
attach_page_buffers(page, head);
attach_page_private(page, head);
}
static sector_t blkdev_max_block(struct block_device *bdev, unsigned int size)
@ -1587,7 +1579,7 @@ void create_empty_buffers(struct page *page,
bh = bh->b_this_page;
} while (bh != head);
}
attach_page_buffers(page, head);
attach_page_private(page, head);
spin_unlock(&page->mapping->private_lock);
}
EXPORT_SYMBOL(create_empty_buffers);
@ -2574,7 +2566,7 @@ static void attach_nobh_buffers(struct page *page, struct buffer_head *head)
bh->b_this_page = head;
bh = bh->b_this_page;
} while (bh != head);
attach_page_buffers(page, head);
attach_page_private(page, head);
spin_unlock(&page->mapping->private_lock);
}
@ -3234,7 +3226,7 @@ drop_buffers(struct page *page, struct buffer_head **buffers_to_free)
bh = next;
} while (bh != head);
*buffers_to_free = head;
__clear_page_buffers(page);
detach_page_private(page);
return 1;
failed:
return 0;