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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: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2010-07-10 18:07:04 +09:00
parent 583ada4761
commit 10ff885ba6
1 changed files with 32 additions and 46 deletions
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78
fs/nilfs2/direct.c
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@ -27,31 +27,29 @@
#include "alloc.h" #include "alloc.h"
#include "dat.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 *) 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 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)); 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) __u64 key, __u64 ptr)
{ {
*(nilfs_direct_dptrs(direct) + key) = cpu_to_le64(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) __u64 key, int level, __u64 *ptrp)
{ {
struct nilfs_direct *direct;
__u64 ptr; __u64 ptr;
direct = (struct nilfs_direct *)bmap; /* XXX: use macro for level 1 */
if (key > NILFS_DIRECT_KEY_MAX || level != 1) if (key > NILFS_DIRECT_KEY_MAX || level != 1)
return -ENOENT; return -ENOENT;
ptr = nilfs_direct_get_ptr(direct, key); ptr = nilfs_direct_get_ptr(direct, key);
@ -63,11 +61,10 @@ static int nilfs_direct_lookup(const struct nilfs_bmap *bmap,
return 0; 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, __u64 key, __u64 *ptrp,
unsigned maxblocks) unsigned maxblocks)
{ {
struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
struct inode *dat = NULL; struct inode *dat = NULL;
__u64 ptr, ptr2; __u64 ptr, ptr2;
sector_t blocknr; sector_t blocknr;
@ -79,8 +76,8 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
if (ptr == NILFS_BMAP_INVALID_PTR) if (ptr == NILFS_BMAP_INVALID_PTR)
return -ENOENT; return -ENOENT;
if (NILFS_BMAP_USE_VBN(bmap)) { if (NILFS_BMAP_USE_VBN(direct)) {
dat = nilfs_bmap_get_dat(bmap); dat = nilfs_bmap_get_dat(direct);
ret = nilfs_dat_translate(dat, ptr, &blocknr); ret = nilfs_dat_translate(dat, ptr, &blocknr);
if (ret < 0) if (ret < 0)
return ret; return ret;
@ -106,29 +103,28 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
} }
static __u64 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; __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) if (ptr != NILFS_BMAP_INVALID_PTR)
/* sequential access */ /* sequential access */
return ptr; return ptr;
else else
/* block group */ /* 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) __u64 key, __u64 ptr)
{ {
direct->d_bmap.b_last_allocated_key = key; direct->b_last_allocated_key = key;
direct->d_bmap.b_last_allocated_ptr = ptr; direct->b_last_allocated_ptr = ptr;
} }
static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 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; union nilfs_bmap_ptr_req req;
struct inode *dat = NULL; struct inode *dat = NULL;
struct buffer_head *bh; 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) if (key > NILFS_DIRECT_KEY_MAX)
return -ENOENT; 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; return -EEXIST;
if (NILFS_BMAP_USE_VBN(bmap)) { 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); dat = nilfs_bmap_get_dat(bmap);
} }
ret = nilfs_bmap_prepare_alloc_ptr(bmap, &req, dat); 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); set_buffer_nilfs_volatile(bh);
nilfs_bmap_commit_alloc_ptr(bmap, &req, dat); 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)) if (!nilfs_bmap_dirty(bmap))
nilfs_bmap_set_dirty(bmap); nilfs_bmap_set_dirty(bmap);
if (NILFS_BMAP_USE_VBN(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); 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) 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; union nilfs_bmap_ptr_req req;
struct inode *dat; struct inode *dat;
int ret; int ret;
if (key > NILFS_DIRECT_KEY_MAX || 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; return -ENOENT;
dat = NILFS_BMAP_USE_VBN(bmap) ? nilfs_bmap_get_dat(bmap) : NULL; 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); ret = nilfs_bmap_prepare_end_ptr(bmap, &req, dat);
if (!ret) { if (!ret) {
nilfs_bmap_commit_end_ptr(bmap, &req, dat); 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); nilfs_bmap_sub_blocks(bmap, 1);
} }
return ret; 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; __u64 key, lastkey;
direct = (struct nilfs_direct *)bmap;
lastkey = NILFS_DIRECT_KEY_MAX + 1; lastkey = NILFS_DIRECT_KEY_MAX + 1;
for (key = NILFS_DIRECT_KEY_MIN; key <= NILFS_DIRECT_KEY_MAX; key++) for (key = NILFS_DIRECT_KEY_MIN; key <= NILFS_DIRECT_KEY_MAX; key++)
if (nilfs_direct_get_ptr(direct, 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; 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) __u64 *keys, __u64 *ptrs, int nitems)
{ {
struct nilfs_direct *direct;
__u64 key; __u64 key;
__u64 ptr; __u64 ptr;
int n; int n;
direct = (struct nilfs_direct *)bmap;
if (nitems > NILFS_DIRECT_NBLOCKS) if (nitems > NILFS_DIRECT_NBLOCKS)
nitems = NILFS_DIRECT_NBLOCKS; nitems = NILFS_DIRECT_NBLOCKS;
n = 0; 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, int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap,
__u64 key, __u64 *keys, __u64 *ptrs, int n) __u64 key, __u64 *keys, __u64 *ptrs, int n)
{ {
struct nilfs_direct *direct;
__le64 *dptrs; __le64 *dptrs;
int ret, i, j; int ret, i, j;
@ -253,8 +243,7 @@ int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap,
bmap->b_ops->bop_clear(bmap); bmap->b_ops->bop_clear(bmap);
/* convert */ /* convert */
direct = (struct nilfs_direct *)bmap; dptrs = nilfs_direct_dptrs(bmap);
dptrs = nilfs_direct_dptrs(direct);
for (i = 0, j = 0; i < NILFS_DIRECT_NBLOCKS; i++) { for (i = 0, j = 0; i < NILFS_DIRECT_NBLOCKS; i++) {
if ((j < n) && (i == keys[j])) { if ((j < n) && (i == keys[j])) {
dptrs[i] = (i != key) ? 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, static int nilfs_direct_propagate(struct nilfs_bmap *bmap,
struct buffer_head *bh) struct buffer_head *bh)
{ {
struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
struct nilfs_palloc_req oldreq, newreq; struct nilfs_palloc_req oldreq, newreq;
struct inode *dat; struct inode *dat;
__u64 key; __u64 key;
@ -284,7 +272,7 @@ static int nilfs_direct_propagate(struct nilfs_bmap *bmap,
dat = nilfs_bmap_get_dat(bmap); dat = nilfs_bmap_get_dat(bmap);
key = nilfs_bmap_data_get_key(bmap, bh); 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)) { if (!buffer_nilfs_volatile(bh)) {
oldreq.pr_entry_nr = ptr; oldreq.pr_entry_nr = ptr;
newreq.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, nilfs_dat_commit_update(dat, &oldreq, &newreq,
bmap->b_ptr_type == NILFS_BMAP_PTR_VS); bmap->b_ptr_type == NILFS_BMAP_PTR_VS);
set_buffer_nilfs_volatile(bh); 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 } else
ret = nilfs_dat_mark_dirty(dat, ptr); ret = nilfs_dat_mark_dirty(dat, ptr);
return ret; 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, __u64 key, __u64 ptr,
struct buffer_head **bh, struct buffer_head **bh,
sector_t blocknr, sector_t blocknr,
union nilfs_binfo *binfo) 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; union nilfs_bmap_ptr_req req;
int ret; int ret;
@ -321,7 +309,7 @@ static int nilfs_direct_assign_v(struct nilfs_direct *direct,
return ret; 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, __u64 key, __u64 ptr,
struct buffer_head **bh, struct buffer_head **bh,
sector_t blocknr, sector_t blocknr,
@ -340,18 +328,16 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap,
sector_t blocknr, sector_t blocknr,
union nilfs_binfo *binfo) union nilfs_binfo *binfo)
{ {
struct nilfs_direct *direct;
__u64 key; __u64 key;
__u64 ptr; __u64 ptr;
direct = (struct nilfs_direct *)bmap;
key = nilfs_bmap_data_get_key(bmap, *bh); key = nilfs_bmap_data_get_key(bmap, *bh);
if (unlikely(key > NILFS_DIRECT_KEY_MAX)) { if (unlikely(key > NILFS_DIRECT_KEY_MAX)) {
printk(KERN_CRIT "%s: invalid key: %llu\n", __func__, printk(KERN_CRIT "%s: invalid key: %llu\n", __func__,
(unsigned long long)key); (unsigned long long)key);
return -EINVAL; return -EINVAL;
} }
ptr = nilfs_direct_get_ptr(direct, key); ptr = nilfs_direct_get_ptr(bmap, key);
if (unlikely(ptr == NILFS_BMAP_INVALID_PTR)) { if (unlikely(ptr == NILFS_BMAP_INVALID_PTR)) {
printk(KERN_CRIT "%s: invalid pointer: %llu\n", __func__, printk(KERN_CRIT "%s: invalid pointer: %llu\n", __func__,
(unsigned long long)ptr); (unsigned long long)ptr);
@ -359,8 +345,8 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap,
} }
return NILFS_BMAP_USE_VBN(bmap) ? return NILFS_BMAP_USE_VBN(bmap) ?
nilfs_direct_assign_v(direct, key, ptr, bh, blocknr, binfo) : nilfs_direct_assign_v(bmap, key, ptr, bh, blocknr, binfo) :
nilfs_direct_assign_p(direct, key, ptr, bh, blocknr, binfo); nilfs_direct_assign_p(bmap, key, ptr, bh, blocknr, binfo);
} }
static const struct nilfs_bmap_operations nilfs_direct_ops = { static const struct nilfs_bmap_operations nilfs_direct_ops = {