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nilfs2: record used amount of each checkpoint in checkpoint list

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This records the number of used blocks per checkpoint in each
checkpoint entry of cpfile.  Even though userland tools can get the
block count via nilfs_get_cpinfo ioctl, it was not updated by the
nilfs2 kernel code.  This fixes the issue and makes it available for
userland tools to calculate used amount per checkpoint.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Jiro SEKIBA <jir@unicus.jp>
This commit is contained in:
Ryusuke Konishi 2011-03-05 00:19:32 +09:00
parent ae191838b0
commit be667377a8
7 changed files with 29 additions and 21 deletions
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11
fs/nilfs2/bmap.c
View file

@ -425,17 +425,6 @@ int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *bmap)
/*
* Internal use only
*/
void nilfs_bmap_add_blocks(const struct nilfs_bmap *bmap, int n)
{
inode_add_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n);
}
void nilfs_bmap_sub_blocks(const struct nilfs_bmap *bmap, int n)
{
inode_sub_bytes(bmap->b_inode, (1 << bmap->b_inode->i_blkbits) * n);
}
__u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap,
const struct buffer_head *bh)
{

3
fs/nilfs2/bmap.h
View file

@ -240,9 +240,6 @@ __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *,
__u64 nilfs_bmap_find_target_seq(const struct nilfs_bmap *, __u64);
__u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *);
void nilfs_bmap_add_blocks(const struct nilfs_bmap *, int);
void nilfs_bmap_sub_blocks(const struct nilfs_bmap *, int);
/* Assume that bmap semaphore is locked. */
static inline int nilfs_bmap_dirty(const struct nilfs_bmap *bmap)

6
fs/nilfs2/btree.c
View file

@ -1174,7 +1174,7 @@ static int nilfs_btree_insert(struct nilfs_bmap *btree, __u64 key, __u64 ptr)
if (ret < 0)
goto out;
nilfs_btree_commit_insert(btree, path, level, key, ptr);
nilfs_bmap_add_blocks(btree, stats.bs_nblocks);
nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks);
out:
nilfs_btree_free_path(path);
@ -1511,7 +1511,7 @@ static int nilfs_btree_delete(struct nilfs_bmap *btree, __u64 key)
if (ret < 0)
goto out;
nilfs_btree_commit_delete(btree, path, level, dat);
nilfs_bmap_sub_blocks(btree, stats.bs_nblocks);
nilfs_inode_sub_blocks(btree->b_inode, stats.bs_nblocks);
out:
nilfs_btree_free_path(path);
@ -1776,7 +1776,7 @@ int nilfs_btree_convert_and_insert(struct nilfs_bmap *btree,
return ret;
nilfs_btree_commit_convert_and_insert(btree, key, ptr, keys, ptrs, n,
di, ni, bh);
nilfs_bmap_add_blocks(btree, stats.bs_nblocks);
nilfs_inode_add_blocks(btree->b_inode, stats.bs_nblocks);
return 0;
}

4
fs/nilfs2/direct.c
View file

@ -146,7 +146,7 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
if (NILFS_BMAP_USE_VBN(bmap))
nilfs_bmap_set_target_v(bmap, key, req.bpr_ptr);
nilfs_bmap_add_blocks(bmap, 1);
nilfs_inode_add_blocks(bmap->b_inode, 1);
}
return ret;
}
@ -168,7 +168,7 @@ static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key)
if (!ret) {
nilfs_bmap_commit_end_ptr(bmap, &req, dat);
nilfs_direct_set_ptr(bmap, key, NILFS_BMAP_INVALID_PTR);
nilfs_bmap_sub_blocks(bmap, 1);
nilfs_inode_sub_blocks(bmap->b_inode, 1);
}
return ret;
}

18
fs/nilfs2/inode.c
View file

@ -41,6 +41,24 @@ struct nilfs_iget_args {
int for_gc;
};
void nilfs_inode_add_blocks(struct inode *inode, int n)
{
struct nilfs_root *root = NILFS_I(inode)->i_root;
inode_add_bytes(inode, (1 << inode->i_blkbits) * n);
if (root)
atomic_add(n, &root->blocks_count);
}
void nilfs_inode_sub_blocks(struct inode *inode, int n)
{
struct nilfs_root *root = NILFS_I(inode)->i_root;
inode_sub_bytes(inode, (1 << inode->i_blkbits) * n);
if (root)
atomic_sub(n, &root->blocks_count);
}
/**
* nilfs_get_block() - get a file block on the filesystem (callback function)
* @inode - inode struct of the target file

2
fs/nilfs2/nilfs.h
View file

@ -251,6 +251,8 @@ int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, struct nilfs_argv *,
void **);
/* inode.c */
void nilfs_inode_add_blocks(struct inode *inode, int n);
void nilfs_inode_sub_blocks(struct inode *inode, int n);
extern struct inode *nilfs_new_inode(struct inode *, int);
extern void nilfs_free_inode(struct inode *);
extern int nilfs_get_block(struct inode *, sector_t, struct buffer_head *, int);

6
include/linux/nilfs2_fs.h
View file

@ -216,8 +216,10 @@ struct nilfs_super_block {
* If there is a bit set in the incompatible feature set that the kernel
* doesn't know about, it should refuse to mount the filesystem.
*/
#define NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL
#define NILFS_FEATURE_COMPAT_SUPP 0ULL
#define NILFS_FEATURE_COMPAT_RO_SUPP 0ULL
#define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT
#define NILFS_FEATURE_INCOMPAT_SUPP 0ULL
/*
@ -509,7 +511,7 @@ struct nilfs_checkpoint {
__le64 cp_create;
__le64 cp_nblk_inc;
__le64 cp_inodes_count;
__le64 cp_blocks_count; /* Reserved (might be deleted) */
__le64 cp_blocks_count;
/* Do not change the byte offset of ifile inode.
To keep the compatibility of the disk format,