nilfs2: unfold nilfs_palloc_block_get_bitmap function
This expands a trivial address calculation in the function into its
every callsite. This expansion improves readability of the callers.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
index d69e6ae..7e2b3ce 100644
--- a/fs/nilfs2/alloc.c
+++ b/fs/nilfs2/alloc.c
@@ -176,13 +176,6 @@
group % nilfs_palloc_groups_per_desc_block(inode);
}
-static unsigned char *
-nilfs_palloc_block_get_bitmap(const struct inode *inode,
- const struct buffer_head *bh, void *kaddr)
-{
- return (unsigned char *)(kaddr + bh_offset(bh));
-}
-
void *nilfs_palloc_block_get_entry(const struct inode *inode, __u64 nr,
const struct buffer_head *bh, void *kaddr)
{
@@ -289,8 +282,7 @@
if (ret < 0)
goto out_desc;
bitmap_kaddr = kmap(bitmap_bh->b_page);
- bitmap = nilfs_palloc_block_get_bitmap(
- inode, bitmap_bh, bitmap_kaddr);
+ bitmap = bitmap_kaddr + bh_offset(bitmap_bh);
pos = nilfs_palloc_find_available_slot(
inode, group, group_offset, bitmap,
entries_per_group);
@@ -351,8 +343,7 @@
desc = nilfs_palloc_block_get_group_desc(inode, group,
req->pr_desc_bh, desc_kaddr);
bitmap_kaddr = kmap(req->pr_bitmap_bh->b_page);
- bitmap = nilfs_palloc_block_get_bitmap(inode, req->pr_bitmap_bh,
- bitmap_kaddr);
+ bitmap = bitmap_kaddr + bh_offset(req->pr_bitmap_bh);
if (!nilfs_clear_bit_atomic(nilfs_mdt_bgl_lock(inode, group),
group_offset, bitmap))
@@ -385,8 +376,7 @@
desc = nilfs_palloc_block_get_group_desc(inode, group,
req->pr_desc_bh, desc_kaddr);
bitmap_kaddr = kmap(req->pr_bitmap_bh->b_page);
- bitmap = nilfs_palloc_block_get_bitmap(inode, req->pr_bitmap_bh,
- bitmap_kaddr);
+ bitmap = bitmap_kaddr + bh_offset(req->pr_bitmap_bh);
if (!nilfs_clear_bit_atomic(nilfs_mdt_bgl_lock(inode, group),
group_offset, bitmap))
printk(KERN_WARNING "%s: entry numer %llu already freed\n",
@@ -472,8 +462,7 @@
desc = nilfs_palloc_block_get_group_desc(
inode, group, desc_bh, desc_kaddr);
bitmap_kaddr = kmap(bitmap_bh->b_page);
- bitmap = nilfs_palloc_block_get_bitmap(
- inode, bitmap_bh, bitmap_kaddr);
+ bitmap = bitmap_kaddr + bh_offset(bitmap_bh);
for (j = i, n = 0;
(j < nitems) && nilfs_palloc_group_is_in(inode, group,
entry_nrs[j]);
