btrfs: use round_down while calculating start position in btrfs_dirty…

…_pages() round_down looks prettier than the bit mask operations. Reviewed-by: Nikolay Borisov <[email protected]> Reviewed-by: Qu Wenruo <[email protected]> Signed-off-by: Goldwyn Rodrigues <[email protected]> Reviewed-by: David Sterba <[email protected]> Signed-off-by: David Sterba <[email protected]>
fracktal · Dec 8, 2020 · 13f0dd8 · 13f0dd8
1 parent 949b327
commit 13f0dd8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
@@ -474,7 +474,7 @@ int btrfs_dirty_pages(struct btrfs_inode *inode, struct page **pages,
 	loff_t isize = i_size_read(&inode->vfs_inode);
 	unsigned int extra_bits = 0;
 
-	start_pos = pos & ~((u64) fs_info->sectorsize - 1);
+	start_pos = round_down(pos, fs_info->sectorsize);
 	num_bytes = round_up(write_bytes + pos - start_pos,
 			     fs_info->sectorsize);