[PATCH 1/3] btrfs: remove unnecessary early exits in delalloc folio lock and unlock

[Qu Wenruo <wqu@suse.com>]

Inside function unlock_delalloc_folio() and lock_delalloc_folios(), we
have the following early exist:

	if (index == locked_folio->index && end_index == index)
		return;

This allows us to exist early if the range are inside the same locked
folio.

But even without the above early check, the existing code can handle it
well, as both __process_folios_contig() and lock_delalloc_folios() will
skip any folio page lock/unlock if it's on the locked folio.

Just remove those unnecessary early exits.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/extent_io.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 8b29eeac3884..013268f70621 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -224,12 +224,7 @@ static noinline void unlock_delalloc_folio(const struct inode *inode,
 					   const struct folio *locked_folio,
 					   u64 start, u64 end)
 {
-	unsigned long index = start >> PAGE_SHIFT;
-	unsigned long end_index = end >> PAGE_SHIFT;
-
 	ASSERT(locked_folio);
-	if (index == locked_folio->index && end_index == index)
-		return;
 
 	__process_folios_contig(inode->i_mapping, locked_folio, start, end,
 				PAGE_UNLOCK);
@@ -246,9 +241,6 @@ static noinline int lock_delalloc_folios(struct inode *inode,
 	u64 processed_end = start;
 	struct folio_batch fbatch;
 
-	if (index == locked_folio->index && index == end_index)
-		return 0;
-
 	folio_batch_init(&fbatch);
 	while (index <= end_index) {
 		unsigned int found_folios, i;
-- 
2.49.0