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nilfs2: unfold nilfs_sufile_block_get_header function

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This unfolds the nilfs_sufile_block_get_header() function for
simplicity.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2009-11-13 03:10:21 +09:00
parent fd66c0d5c3
commit 7b16c8a211
1 changed files with 3 additions and 12 deletions
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15
fs/nilfs2/sufile.c
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@ -62,14 +62,6 @@ nilfs_sufile_segment_usages_in_block(const struct inode *sufile, __u64 curr,
max - curr + 1);
}
static inline struct nilfs_sufile_header *
nilfs_sufile_block_get_header(const struct inode *sufile,
struct buffer_head *bh,
void *kaddr)
{
return kaddr + bh_offset(bh);
}
static struct nilfs_segment_usage *
nilfs_sufile_block_get_segment_usage(const struct inode *sufile, __u64 segnum,
struct buffer_head *bh, void *kaddr)
@ -270,7 +262,7 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
if (ret < 0)
goto out_sem;
kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
header = nilfs_sufile_block_get_header(sufile, header_bh, kaddr);
header = kaddr + bh_offset(header_bh);
ncleansegs = le64_to_cpu(header->sh_ncleansegs);
last_alloc = le64_to_cpu(header->sh_last_alloc);
kunmap_atomic(kaddr, KM_USER0);
@ -302,8 +294,7 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
kunmap_atomic(kaddr, KM_USER0);
kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
header = nilfs_sufile_block_get_header(
sufile, header_bh, kaddr);
header = kaddr + bh_offset(header_bh);
le64_add_cpu(&header->sh_ncleansegs, -1);
le64_add_cpu(&header->sh_ndirtysegs, 1);
header->sh_last_alloc = cpu_to_le64(segnum);
@ -515,7 +506,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat)
goto out_sem;
kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
header = nilfs_sufile_block_get_header(sufile, header_bh, kaddr);
header = kaddr + bh_offset(header_bh);
sustat->ss_nsegs = nilfs_sufile_get_nsegments(sufile);
sustat->ss_ncleansegs = le64_to_cpu(header->sh_ncleansegs);
sustat->ss_ndirtysegs = le64_to_cpu(header->sh_ndirtysegs);