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btrfs: use attach/detach_page_private

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

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>
Acked-by: David Sterba <dsterba@suse.com>
Cc: Chris Mason <clm@fb.com>
Cc: Josef Bacik <josef@toxicpanda.com>
Link: http://lkml.kernel.org/r/20200517214718.468-4-guoqing.jiang@cloud.ionos.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Guoqing Jiang 2020-06-01 21:47:45 -07:00 committed by Linus Torvalds
parent db2c1d86cc
commit d1b89bc042
3 changed files with 12 additions and 36 deletions
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4
fs/btrfs/disk-io.c
View File

@ -980,9 +980,7 @@ static void btree_invalidatepage(struct page *page, unsigned int offset,
btrfs_warn(BTRFS_I(page->mapping->host)->root->fs_info,
"page private not zero on page %llu",
(unsigned long long)page_offset(page));
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
detach_page_private(page);
}
}

21
fs/btrfs/extent_io.c
View File

@ -3076,22 +3076,16 @@ static int submit_extent_page(unsigned int opf,
static void attach_extent_buffer_page(struct extent_buffer *eb,
struct page *page)
{
if (!PagePrivate(page)) {
SetPagePrivate(page);
get_page(page);
set_page_private(page, (unsigned long)eb);
} else {
if (!PagePrivate(page))
attach_page_private(page, eb);
else
WARN_ON(page->private != (unsigned long)eb);
}
}
void set_page_extent_mapped(struct page *page)
{
if (!PagePrivate(page)) {
SetPagePrivate(page);
get_page(page);
set_page_private(page, EXTENT_PAGE_PRIVATE);
}
if (!PagePrivate(page))
attach_page_private(page, (void *)EXTENT_PAGE_PRIVATE);
}
static struct extent_map *
@ -4910,10 +4904,7 @@ static void btrfs_release_extent_buffer_pages(struct extent_buffer *eb)
* We need to make sure we haven't be attached
* to a new eb.
*/
ClearPagePrivate(page);
set_page_private(page, 0);
/* One for the page private */
put_page(page);
detach_page_private(page);
}
if (mapped)

23
fs/btrfs/inode.c
View File

@ -8301,11 +8301,8 @@ static void btrfs_readahead(struct readahead_control *rac)
static int __btrfs_releasepage(struct page *page, gfp_t gfp_flags)
{
int ret = try_release_extent_mapping(page, gfp_flags);
if (ret == 1) {
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
}
if (ret == 1)
detach_page_private(page);
return ret;
}
@ -8327,14 +8324,8 @@ static int btrfs_migratepage(struct address_space *mapping,
if (ret != MIGRATEPAGE_SUCCESS)
return ret;
if (page_has_private(page)) {
ClearPagePrivate(page);
get_page(newpage);
set_page_private(newpage, page_private(page));
set_page_private(page, 0);
put_page(page);
SetPagePrivate(newpage);
}
if (page_has_private(page))
attach_page_private(newpage, detach_page_private(page));
if (PagePrivate2(page)) {
ClearPagePrivate2(page);
@ -8456,11 +8447,7 @@ again:
}
ClearPageChecked(page);
if (PagePrivate(page)) {
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
}
detach_page_private(page);
}
/*