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Commit 10ff885b authored by Ryusuke Konishi's avatar Ryusuke Konishi
Browse files

nilfs2: get rid of nilfs_direct uses 



This replaces all uses of nilfs_direct struct in implementation of
direct mapping with nilfs_bmap struct.

Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
parent 583ada47

fs/nilfs2/direct.c

+32 −46
Original line number Diff line number Diff line
@@ -27,31 +27,29 @@ 
#include "alloc.h"

#include "dat.h"



static inline __le64 *nilfs_direct_dptrs(const struct nilfs_direct *direct)

static inline __le64 *nilfs_direct_dptrs(const struct nilfs_bmap *direct)

{

	return (__le64 *)

		((struct nilfs_direct_node *)direct->d_bmap.b_u.u_data + 1);

		((struct nilfs_direct_node *)direct->b_u.u_data + 1);

}



static inline __u64

nilfs_direct_get_ptr(const struct nilfs_direct *direct, __u64 key)

nilfs_direct_get_ptr(const struct nilfs_bmap *direct, __u64 key)

{

	return le64_to_cpu(*(nilfs_direct_dptrs(direct) + key));

}



static inline void nilfs_direct_set_ptr(struct nilfs_direct *direct,

static inline void nilfs_direct_set_ptr(struct nilfs_bmap *direct,

					__u64 key, __u64 ptr)

{

	*(nilfs_direct_dptrs(direct) + key) = cpu_to_le64(ptr);

}



static int nilfs_direct_lookup(const struct nilfs_bmap *bmap,

static int nilfs_direct_lookup(const struct nilfs_bmap *direct,

			       __u64 key, int level, __u64 *ptrp)

{

	struct nilfs_direct *direct;

	__u64 ptr;



	direct = (struct nilfs_direct *)bmap;  /* XXX: use macro for level 1 */

	if (key > NILFS_DIRECT_KEY_MAX || level != 1)

		return -ENOENT;

	ptr = nilfs_direct_get_ptr(direct, key);
@@ -63,11 +61,10 @@ static int nilfs_direct_lookup(const struct nilfs_bmap *bmap, 
	return 0;

}



static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,

static int nilfs_direct_lookup_contig(const struct nilfs_bmap *direct,

				      __u64 key, __u64 *ptrp,

				      unsigned maxblocks)

{

	struct nilfs_direct *direct = (struct nilfs_direct *)bmap;

	struct inode *dat = NULL;

	__u64 ptr, ptr2;

	sector_t blocknr;
@@ -79,8 +76,8 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap, 
	if (ptr == NILFS_BMAP_INVALID_PTR)

		return -ENOENT;



	if (NILFS_BMAP_USE_VBN(bmap)) {

		dat = nilfs_bmap_get_dat(bmap);

	if (NILFS_BMAP_USE_VBN(direct)) {

		dat = nilfs_bmap_get_dat(direct);

		ret = nilfs_dat_translate(dat, ptr, &blocknr);

		if (ret < 0)

			return ret;
@@ -106,29 +103,28 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap, 
}



static __u64

nilfs_direct_find_target_v(const struct nilfs_direct *direct, __u64 key)

nilfs_direct_find_target_v(const struct nilfs_bmap *direct, __u64 key)

{

	__u64 ptr;



	ptr = nilfs_bmap_find_target_seq(&direct->d_bmap, key);

	ptr = nilfs_bmap_find_target_seq(direct, key);

	if (ptr != NILFS_BMAP_INVALID_PTR)

		/* sequential access */

		return ptr;

	else

		/* block group */

		return nilfs_bmap_find_target_in_group(&direct->d_bmap);

		return nilfs_bmap_find_target_in_group(direct);

}



static void nilfs_direct_set_target_v(struct nilfs_direct *direct,

static void nilfs_direct_set_target_v(struct nilfs_bmap *direct,

				      __u64 key, __u64 ptr)

{

	direct->d_bmap.b_last_allocated_key = key;

	direct->d_bmap.b_last_allocated_ptr = ptr;

	direct->b_last_allocated_key = key;

	direct->b_last_allocated_ptr = ptr;

}



static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)

{

	struct nilfs_direct *direct = (struct nilfs_direct *)bmap;

	union nilfs_bmap_ptr_req req;

	struct inode *dat = NULL;

	struct buffer_head *bh;
@@ -136,11 +132,11 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr) 


	if (key > NILFS_DIRECT_KEY_MAX)

		return -ENOENT;

	if (nilfs_direct_get_ptr(direct, key) != NILFS_BMAP_INVALID_PTR)

	if (nilfs_direct_get_ptr(bmap, key) != NILFS_BMAP_INVALID_PTR)

		return -EEXIST;



	if (NILFS_BMAP_USE_VBN(bmap)) {

		req.bpr_ptr = nilfs_direct_find_target_v(direct, key);

		req.bpr_ptr = nilfs_direct_find_target_v(bmap, key);

		dat = nilfs_bmap_get_dat(bmap);

	}

	ret = nilfs_bmap_prepare_alloc_ptr(bmap, &req, dat);
@@ -150,13 +146,13 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr) 
		set_buffer_nilfs_volatile(bh);



		nilfs_bmap_commit_alloc_ptr(bmap, &req, dat);

		nilfs_direct_set_ptr(direct, key, req.bpr_ptr);

		nilfs_direct_set_ptr(bmap, key, req.bpr_ptr);



		if (!nilfs_bmap_dirty(bmap))

			nilfs_bmap_set_dirty(bmap);



		if (NILFS_BMAP_USE_VBN(bmap))

			nilfs_direct_set_target_v(direct, key, req.bpr_ptr);

			nilfs_direct_set_target_v(bmap, key, req.bpr_ptr);



		nilfs_bmap_add_blocks(bmap, 1);

	}
@@ -165,33 +161,30 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr) 


static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key)

{

	struct nilfs_direct *direct = (struct nilfs_direct *)bmap;

	union nilfs_bmap_ptr_req req;

	struct inode *dat;

	int ret;



	if (key > NILFS_DIRECT_KEY_MAX ||

	    nilfs_direct_get_ptr(direct, key) == NILFS_BMAP_INVALID_PTR)

	    nilfs_direct_get_ptr(bmap, key) == NILFS_BMAP_INVALID_PTR)

		return -ENOENT;



	dat = NILFS_BMAP_USE_VBN(bmap) ? nilfs_bmap_get_dat(bmap) : NULL;

	req.bpr_ptr = nilfs_direct_get_ptr(direct, key);

	req.bpr_ptr = nilfs_direct_get_ptr(bmap, key);



	ret = nilfs_bmap_prepare_end_ptr(bmap, &req, dat);

	if (!ret) {

		nilfs_bmap_commit_end_ptr(bmap, &req, dat);

		nilfs_direct_set_ptr(direct, key, NILFS_BMAP_INVALID_PTR);

		nilfs_direct_set_ptr(bmap, key, NILFS_BMAP_INVALID_PTR);

		nilfs_bmap_sub_blocks(bmap, 1);

	}

	return ret;

}



static int nilfs_direct_last_key(const struct nilfs_bmap *bmap, __u64 *keyp)

static int nilfs_direct_last_key(const struct nilfs_bmap *direct, __u64 *keyp)

{

	struct nilfs_direct *direct;

	__u64 key, lastkey;



	direct = (struct nilfs_direct *)bmap;

	lastkey = NILFS_DIRECT_KEY_MAX + 1;

	for (key = NILFS_DIRECT_KEY_MIN; key <= NILFS_DIRECT_KEY_MAX; key++)

		if (nilfs_direct_get_ptr(direct, key) !=
@@ -211,15 +204,13 @@ static int nilfs_direct_check_insert(const struct nilfs_bmap *bmap, __u64 key) 
	return key > NILFS_DIRECT_KEY_MAX;

}



static int nilfs_direct_gather_data(struct nilfs_bmap *bmap,

static int nilfs_direct_gather_data(struct nilfs_bmap *direct,

				    __u64 *keys, __u64 *ptrs, int nitems)

{

	struct nilfs_direct *direct;

	__u64 key;

	__u64 ptr;

	int n;



	direct = (struct nilfs_direct *)bmap;

	if (nitems > NILFS_DIRECT_NBLOCKS)

		nitems = NILFS_DIRECT_NBLOCKS;

	n = 0;
@@ -237,7 +228,6 @@ static int nilfs_direct_gather_data(struct nilfs_bmap *bmap, 
int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap,

				    __u64 key, __u64 *keys, __u64 *ptrs, int n)

{

	struct nilfs_direct *direct;

	__le64 *dptrs;

	int ret, i, j;
@@ -253,8 +243,7 @@ int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap, 
		bmap->b_ops->bop_clear(bmap);



	/* convert */

	direct = (struct nilfs_direct *)bmap;

	dptrs = nilfs_direct_dptrs(direct);

	dptrs = nilfs_direct_dptrs(bmap);

	for (i = 0, j = 0; i < NILFS_DIRECT_NBLOCKS; i++) {

		if ((j < n) && (i == keys[j])) {

			dptrs[i] = (i != key) ?
@@ -272,7 +261,6 @@ int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap, 
static int nilfs_direct_propagate(struct nilfs_bmap *bmap,

				  struct buffer_head *bh)

{

	struct nilfs_direct *direct = (struct nilfs_direct *)bmap;

	struct nilfs_palloc_req oldreq, newreq;

	struct inode *dat;

	__u64 key;
@@ -284,7 +272,7 @@ static int nilfs_direct_propagate(struct nilfs_bmap *bmap, 


	dat = nilfs_bmap_get_dat(bmap);

	key = nilfs_bmap_data_get_key(bmap, bh);

	ptr = nilfs_direct_get_ptr(direct, key);

	ptr = nilfs_direct_get_ptr(bmap, key);

	if (!buffer_nilfs_volatile(bh)) {

		oldreq.pr_entry_nr = ptr;

		newreq.pr_entry_nr = ptr;
@@ -294,20 +282,20 @@ static int nilfs_direct_propagate(struct nilfs_bmap *bmap, 
		nilfs_dat_commit_update(dat, &oldreq, &newreq,

					bmap->b_ptr_type == NILFS_BMAP_PTR_VS);

		set_buffer_nilfs_volatile(bh);

		nilfs_direct_set_ptr(direct, key, newreq.pr_entry_nr);

		nilfs_direct_set_ptr(bmap, key, newreq.pr_entry_nr);

	} else

		ret = nilfs_dat_mark_dirty(dat, ptr);



	return ret;

}



static int nilfs_direct_assign_v(struct nilfs_direct *direct,

static int nilfs_direct_assign_v(struct nilfs_bmap *direct,

				 __u64 key, __u64 ptr,

				 struct buffer_head **bh,

				 sector_t blocknr,

				 union nilfs_binfo *binfo)

{

	struct inode *dat = nilfs_bmap_get_dat(&direct->d_bmap);

	struct inode *dat = nilfs_bmap_get_dat(direct);

	union nilfs_bmap_ptr_req req;

	int ret;
@@ -321,7 +309,7 @@ static int nilfs_direct_assign_v(struct nilfs_direct *direct, 
	return ret;

}



static int nilfs_direct_assign_p(struct nilfs_direct *direct,

static int nilfs_direct_assign_p(struct nilfs_bmap *direct,

				 __u64 key, __u64 ptr,

				 struct buffer_head **bh,

				 sector_t blocknr,
@@ -340,18 +328,16 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap, 
			       sector_t blocknr,

			       union nilfs_binfo *binfo)

{

	struct nilfs_direct *direct;

	__u64 key;

	__u64 ptr;



	direct = (struct nilfs_direct *)bmap;

	key = nilfs_bmap_data_get_key(bmap, *bh);

	if (unlikely(key > NILFS_DIRECT_KEY_MAX)) {

		printk(KERN_CRIT "%s: invalid key: %llu\n", __func__,

		       (unsigned long long)key);

		return -EINVAL;

	}

	ptr = nilfs_direct_get_ptr(direct, key);

	ptr = nilfs_direct_get_ptr(bmap, key);

	if (unlikely(ptr == NILFS_BMAP_INVALID_PTR)) {

		printk(KERN_CRIT "%s: invalid pointer: %llu\n", __func__,

		       (unsigned long long)ptr);
@@ -359,8 +345,8 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap, 
	}



	return NILFS_BMAP_USE_VBN(bmap) ?

		nilfs_direct_assign_v(direct, key, ptr, bh, blocknr, binfo) :

		nilfs_direct_assign_p(direct, key, ptr, bh, blocknr, binfo);

		nilfs_direct_assign_v(bmap, key, ptr, bh, blocknr, binfo) :

		nilfs_direct_assign_p(bmap, key, ptr, bh, blocknr, binfo);

}



static const struct nilfs_bmap_operations nilfs_direct_ops = {