[RFCv5 2/5] iomap: Refactor iop_set_range_uptodate() function

["Ritesh Harjani (IBM)" <ritesh.list@gmail.com>]

This patch moves up and combine the definitions of two functions
(iomap_iop_set_range_uptodate() & iomap_set_range_uptodate()) into
iop_set_range_uptodate() & refactors it's arguments a bit.

No functionality change in this patch.

Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
---
 fs/iomap/buffered-io.c | 57 ++++++++++++++++++++----------------------
 1 file changed, 27 insertions(+), 30 deletions(-)

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index cbd945d96584..e732581dc2d4 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -43,6 +43,27 @@ static inline struct iomap_page *to_iomap_page(struct folio *folio)

 static struct bio_set iomap_ioend_bioset;

+static void iop_set_range_uptodate(struct inode *inode, struct folio *folio,
+				   size_t off, size_t len)
+{
+	struct iomap_page *iop = to_iomap_page(folio);
+	unsigned int first_blk = off >> inode->i_blkbits;
+	unsigned int last_blk = (off + len - 1) >> inode->i_blkbits;
+	unsigned int nr_blks = last_blk - first_blk + 1;
+	unsigned long flags;
+
+	if (iop) {
+		spin_lock_irqsave(&iop->uptodate_lock, flags);
+		bitmap_set(iop->uptodate, first_blk, nr_blks);
+		if (bitmap_full(iop->uptodate,
+				i_blocks_per_folio(inode, folio)))
+			folio_mark_uptodate(folio);
+		spin_unlock_irqrestore(&iop->uptodate_lock, flags);
+	} else {
+		folio_mark_uptodate(folio);
+	}
+}
+
 static struct iomap_page *iop_alloc(struct inode *inode, struct folio *folio,
 				    unsigned int flags)
 {
@@ -145,30 +166,6 @@ static void iomap_adjust_read_range(struct inode *inode, struct folio *folio,
 	*lenp = plen;
 }

-static void iomap_iop_set_range_uptodate(struct folio *folio,
-		struct iomap_page *iop, size_t off, size_t len)
-{
-	struct inode *inode = folio->mapping->host;
-	unsigned first = off >> inode->i_blkbits;
-	unsigned last = (off + len - 1) >> inode->i_blkbits;
-	unsigned long flags;
-
-	spin_lock_irqsave(&iop->uptodate_lock, flags);
-	bitmap_set(iop->uptodate, first, last - first + 1);
-	if (bitmap_full(iop->uptodate, i_blocks_per_folio(inode, folio)))
-		folio_mark_uptodate(folio);
-	spin_unlock_irqrestore(&iop->uptodate_lock, flags);
-}
-
-static void iomap_set_range_uptodate(struct folio *folio,
-		struct iomap_page *iop, size_t off, size_t len)
-{
-	if (iop)
-		iomap_iop_set_range_uptodate(folio, iop, off, len);
-	else
-		folio_mark_uptodate(folio);
-}
-
 static void iomap_finish_folio_read(struct folio *folio, size_t offset,
 		size_t len, int error)
 {
@@ -178,7 +175,8 @@ static void iomap_finish_folio_read(struct folio *folio, size_t offset,
 		folio_clear_uptodate(folio);
 		folio_set_error(folio);
 	} else {
-		iomap_set_range_uptodate(folio, iop, offset, len);
+		iop_set_range_uptodate(folio->mapping->host, folio, offset,
+				       len);
 	}

 	if (!iop || atomic_sub_and_test(len, &iop->read_bytes_pending))
@@ -240,7 +238,7 @@ static int iomap_read_inline_data(const struct iomap_iter *iter,
 	memcpy(addr, iomap->inline_data, size);
 	memset(addr + size, 0, PAGE_SIZE - poff - size);
 	kunmap_local(addr);
-	iomap_set_range_uptodate(folio, iop, offset, PAGE_SIZE - poff);
+	iop_set_range_uptodate(iter->inode, folio, offset, PAGE_SIZE - poff);
 	return 0;
 }

@@ -277,7 +275,7 @@ static loff_t iomap_readpage_iter(const struct iomap_iter *iter,

 	if (iomap_block_needs_zeroing(iter, pos)) {
 		folio_zero_range(folio, poff, plen);
-		iomap_set_range_uptodate(folio, iop, poff, plen);
+		iop_set_range_uptodate(iter->inode, folio, poff, plen);
 		goto done;
 	}

@@ -598,7 +596,7 @@ static int __iomap_write_begin(const struct iomap_iter *iter, loff_t pos,
 			if (status)
 				return status;
 		}
-		iomap_set_range_uptodate(folio, iop, poff, plen);
+		iop_set_range_uptodate(iter->inode, folio, poff, plen);
 	} while ((block_start += plen) < block_end);

 	return 0;
@@ -705,7 +703,6 @@ static int iomap_write_begin(struct iomap_iter *iter, loff_t pos,
 static size_t __iomap_write_end(struct inode *inode, loff_t pos, size_t len,
 		size_t copied, struct folio *folio)
 {
-	struct iomap_page *iop = to_iomap_page(folio);
 	flush_dcache_folio(folio);

 	/*
@@ -721,7 +718,7 @@ static size_t __iomap_write_end(struct inode *inode, loff_t pos, size_t len,
 	 */
 	if (unlikely(copied < len && !folio_test_uptodate(folio)))
 		return 0;
-	iomap_set_range_uptodate(folio, iop, offset_in_folio(folio, pos), len);
+	iop_set_range_uptodate(inode, folio, offset_in_folio(folio, pos), len);
 	filemap_dirty_folio(inode->i_mapping, folio);
 	return copied;
 }
--
2.39.2