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authorGuoqing Jiang <guoqing.jiang@cloud.ionos.com>2020-06-01 21:47:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-02 10:59:07 -0700
commit58aeb731963cb4cf4db35412723b5084799dbe06 (patch)
tree0b94bee4e5dddef82da7a0c8983032fa643a5805
parent7128cf9a25096a75139ec5dcd710ede182657210 (diff)
iomap: use attach/detach_page_private
Since the new pair function is introduced, we can call them to clean the code in iomap. 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> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Dave Chinner <david@fromorbit.com> Link: http://lkml.kernel.org/r/20200517214718.468-7-guoqing.jiang@cloud.ionos.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/iomap/buffered-io.c19
1 files changed, 4 insertions, 15 deletions
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 890c8fcda4f3..a1ed7620fbac 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -59,24 +59,19 @@ iomap_page_create(struct inode *inode, struct page *page)
* 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)iop);
- SetPagePrivate(page);
+ attach_page_private(page, iop);
return iop;
}
static void
iomap_page_release(struct page *page)
{
- struct iomap_page *iop = to_iomap_page(page);
+ struct iomap_page *iop = detach_page_private(page);
if (!iop)
return;
WARN_ON_ONCE(atomic_read(&iop->read_count));
WARN_ON_ONCE(atomic_read(&iop->write_count));
- ClearPagePrivate(page);
- set_page_private(page, 0);
- put_page(page);
kfree(iop);
}
@@ -526,14 +521,8 @@ iomap_migrate_page(struct address_space *mapping, struct page *newpage,
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 (mode != MIGRATE_SYNC_NO_COPY)
migrate_page_copy(newpage, page);