[PATCH 1/3] btrfs: Remove unused arguments from btrfs_get_extent_fiemap

From: Nikolay Borisov <nborisov@suse.com>
To: linux-btrfs@vger.kernel.org
Cc: Nikolay Borisov <nborisov@suse.com>
Subject: [PATCH 1/3] btrfs: Remove unused arguments from btrfs_get_extent_fiemap
Date: Wed, 12 Dec 2018 09:42:32 +0200	[thread overview]
Message-ID: <20181212074234.20613-2-nborisov@suse.com> (raw)
In-Reply-To: <20181212074234.20613-1-nborisov@suse.com>

This function is a simple wrapper over btrfs_get_extent that returns
either:

a) A real extent in the passed range or
b) Adjusted extent based on whether delalloc bytes are found backing up
a hole.

To support these semantics it doesn't need the page/pg_offset/create
arguments which are passed to btrfs_get_extent in case an extent is to
be created. So simplify the function by removing the unused arguments.
No functional changes.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
---
 fs/btrfs/ctree.h     | 3 +--
 fs/btrfs/extent_io.c | 3 +--
 fs/btrfs/file.c      | 3 +--
 fs/btrfs/inode.c     | 6 ++----
 4 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6520e8e70b09..2dc94698c2fa 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3177,8 +3177,7 @@ void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
 
 /* inode.c */
 struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
-		struct page *page, size_t pg_offset, u64 start,
-		u64 len, int create);
+					   u64 start, u64 len);
 noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len,
 			      u64 *orig_start, u64 *orig_block_len,
 			      u64 *ram_bytes);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index f7e167ad01c4..2a72a7b5f033 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4236,8 +4236,7 @@ static struct extent_map *get_extent_skip_holes(struct inode *inode,
 		if (len == 0)
 			break;
 		len = ALIGN(len, sectorsize);
-		em = btrfs_get_extent_fiemap(BTRFS_I(inode), NULL, 0, offset,
-				len, 0);
+		em = btrfs_get_extent_fiemap(BTRFS_I(inode), offset, len);
 		if (IS_ERR_OR_NULL(em))
 			return em;
 
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 81aae230d1a5..9b77c3a1b9c6 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -3218,8 +3218,7 @@ static int find_desired_extent(struct inode *inode, loff_t *offset, int whence)
 			 &cached_state);
 
 	while (start < inode->i_size) {
-		em = btrfs_get_extent_fiemap(BTRFS_I(inode), NULL, 0,
-				start, len, 0);
+		em = btrfs_get_extent_fiemap(BTRFS_I(inode), start, len);
 		if (IS_ERR(em)) {
 			ret = PTR_ERR(em);
 			em = NULL;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index de912d6e48e6..67eee4d345c9 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6961,9 +6961,7 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
 }
 
 struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
-		struct page *page,
-		size_t pg_offset, u64 start, u64 len,
-		int create)
+					   u64 start, u64 len)
 {
 	struct extent_map *em;
 	struct extent_map *hole_em = NULL;
@@ -6973,7 +6971,7 @@ struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode,
 	u64 found_end;
 	int err = 0;
 
-	em = btrfs_get_extent(inode, page, pg_offset, start, len, create);
+	em = btrfs_get_extent(inode, NULL, 0, start, len, 0);
 	if (IS_ERR(em))
 		return em;
 	/*
-- 
2.17.1

