mirror of https://gitee.com/openkylin/linux.git
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
parent
583ada4761
commit
10ff885ba6
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@ -27,31 +27,29 @@
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#include "alloc.h"
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#include "dat.h"
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static inline __le64 *nilfs_direct_dptrs(const struct nilfs_direct *direct)
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static inline __le64 *nilfs_direct_dptrs(const struct nilfs_bmap *direct)
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{
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return (__le64 *)
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((struct nilfs_direct_node *)direct->d_bmap.b_u.u_data + 1);
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((struct nilfs_direct_node *)direct->b_u.u_data + 1);
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}
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static inline __u64
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nilfs_direct_get_ptr(const struct nilfs_direct *direct, __u64 key)
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nilfs_direct_get_ptr(const struct nilfs_bmap *direct, __u64 key)
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{
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return le64_to_cpu(*(nilfs_direct_dptrs(direct) + key));
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}
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static inline void nilfs_direct_set_ptr(struct nilfs_direct *direct,
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static inline void nilfs_direct_set_ptr(struct nilfs_bmap *direct,
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__u64 key, __u64 ptr)
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{
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*(nilfs_direct_dptrs(direct) + key) = cpu_to_le64(ptr);
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}
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static int nilfs_direct_lookup(const struct nilfs_bmap *bmap,
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static int nilfs_direct_lookup(const struct nilfs_bmap *direct,
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__u64 key, int level, __u64 *ptrp)
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{
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struct nilfs_direct *direct;
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__u64 ptr;
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direct = (struct nilfs_direct *)bmap; /* XXX: use macro for level 1 */
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if (key > NILFS_DIRECT_KEY_MAX || level != 1)
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return -ENOENT;
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ptr = nilfs_direct_get_ptr(direct, key);
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@ -63,11 +61,10 @@ static int nilfs_direct_lookup(const struct nilfs_bmap *bmap,
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return 0;
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}
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static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
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static int nilfs_direct_lookup_contig(const struct nilfs_bmap *direct,
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__u64 key, __u64 *ptrp,
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unsigned maxblocks)
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{
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struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
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struct inode *dat = NULL;
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__u64 ptr, ptr2;
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sector_t blocknr;
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@ -79,8 +76,8 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
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if (ptr == NILFS_BMAP_INVALID_PTR)
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return -ENOENT;
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if (NILFS_BMAP_USE_VBN(bmap)) {
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dat = nilfs_bmap_get_dat(bmap);
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if (NILFS_BMAP_USE_VBN(direct)) {
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dat = nilfs_bmap_get_dat(direct);
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ret = nilfs_dat_translate(dat, ptr, &blocknr);
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if (ret < 0)
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return ret;
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@ -106,29 +103,28 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
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}
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static __u64
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nilfs_direct_find_target_v(const struct nilfs_direct *direct, __u64 key)
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nilfs_direct_find_target_v(const struct nilfs_bmap *direct, __u64 key)
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{
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__u64 ptr;
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ptr = nilfs_bmap_find_target_seq(&direct->d_bmap, key);
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ptr = nilfs_bmap_find_target_seq(direct, key);
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if (ptr != NILFS_BMAP_INVALID_PTR)
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/* sequential access */
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return ptr;
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else
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/* block group */
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return nilfs_bmap_find_target_in_group(&direct->d_bmap);
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return nilfs_bmap_find_target_in_group(direct);
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}
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static void nilfs_direct_set_target_v(struct nilfs_direct *direct,
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static void nilfs_direct_set_target_v(struct nilfs_bmap *direct,
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__u64 key, __u64 ptr)
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{
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direct->d_bmap.b_last_allocated_key = key;
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direct->d_bmap.b_last_allocated_ptr = ptr;
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direct->b_last_allocated_key = key;
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direct->b_last_allocated_ptr = ptr;
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}
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static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
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{
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struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
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union nilfs_bmap_ptr_req req;
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struct inode *dat = NULL;
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struct buffer_head *bh;
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@ -136,11 +132,11 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
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if (key > NILFS_DIRECT_KEY_MAX)
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return -ENOENT;
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if (nilfs_direct_get_ptr(direct, key) != NILFS_BMAP_INVALID_PTR)
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if (nilfs_direct_get_ptr(bmap, key) != NILFS_BMAP_INVALID_PTR)
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return -EEXIST;
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if (NILFS_BMAP_USE_VBN(bmap)) {
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req.bpr_ptr = nilfs_direct_find_target_v(direct, key);
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req.bpr_ptr = nilfs_direct_find_target_v(bmap, key);
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dat = nilfs_bmap_get_dat(bmap);
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}
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ret = nilfs_bmap_prepare_alloc_ptr(bmap, &req, dat);
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@ -150,13 +146,13 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
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set_buffer_nilfs_volatile(bh);
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nilfs_bmap_commit_alloc_ptr(bmap, &req, dat);
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nilfs_direct_set_ptr(direct, key, req.bpr_ptr);
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nilfs_direct_set_ptr(bmap, key, req.bpr_ptr);
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if (!nilfs_bmap_dirty(bmap))
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nilfs_bmap_set_dirty(bmap);
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if (NILFS_BMAP_USE_VBN(bmap))
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nilfs_direct_set_target_v(direct, key, req.bpr_ptr);
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nilfs_direct_set_target_v(bmap, key, req.bpr_ptr);
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nilfs_bmap_add_blocks(bmap, 1);
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}
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@ -165,33 +161,30 @@ static int nilfs_direct_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
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static int nilfs_direct_delete(struct nilfs_bmap *bmap, __u64 key)
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{
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struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
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union nilfs_bmap_ptr_req req;
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struct inode *dat;
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int ret;
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if (key > NILFS_DIRECT_KEY_MAX ||
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nilfs_direct_get_ptr(direct, key) == NILFS_BMAP_INVALID_PTR)
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nilfs_direct_get_ptr(bmap, key) == NILFS_BMAP_INVALID_PTR)
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return -ENOENT;
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dat = NILFS_BMAP_USE_VBN(bmap) ? nilfs_bmap_get_dat(bmap) : NULL;
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req.bpr_ptr = nilfs_direct_get_ptr(direct, key);
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req.bpr_ptr = nilfs_direct_get_ptr(bmap, key);
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ret = nilfs_bmap_prepare_end_ptr(bmap, &req, dat);
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if (!ret) {
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nilfs_bmap_commit_end_ptr(bmap, &req, dat);
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nilfs_direct_set_ptr(direct, key, NILFS_BMAP_INVALID_PTR);
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nilfs_direct_set_ptr(bmap, key, NILFS_BMAP_INVALID_PTR);
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nilfs_bmap_sub_blocks(bmap, 1);
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}
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return ret;
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}
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static int nilfs_direct_last_key(const struct nilfs_bmap *bmap, __u64 *keyp)
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static int nilfs_direct_last_key(const struct nilfs_bmap *direct, __u64 *keyp)
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{
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struct nilfs_direct *direct;
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__u64 key, lastkey;
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direct = (struct nilfs_direct *)bmap;
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lastkey = NILFS_DIRECT_KEY_MAX + 1;
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for (key = NILFS_DIRECT_KEY_MIN; key <= NILFS_DIRECT_KEY_MAX; key++)
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if (nilfs_direct_get_ptr(direct, key) !=
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@ -211,15 +204,13 @@ static int nilfs_direct_check_insert(const struct nilfs_bmap *bmap, __u64 key)
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return key > NILFS_DIRECT_KEY_MAX;
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}
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static int nilfs_direct_gather_data(struct nilfs_bmap *bmap,
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static int nilfs_direct_gather_data(struct nilfs_bmap *direct,
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__u64 *keys, __u64 *ptrs, int nitems)
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{
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struct nilfs_direct *direct;
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__u64 key;
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__u64 ptr;
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int n;
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direct = (struct nilfs_direct *)bmap;
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if (nitems > NILFS_DIRECT_NBLOCKS)
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nitems = NILFS_DIRECT_NBLOCKS;
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n = 0;
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@ -237,7 +228,6 @@ static int nilfs_direct_gather_data(struct nilfs_bmap *bmap,
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int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap,
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__u64 key, __u64 *keys, __u64 *ptrs, int n)
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{
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struct nilfs_direct *direct;
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__le64 *dptrs;
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int ret, i, j;
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@ -253,8 +243,7 @@ int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap,
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bmap->b_ops->bop_clear(bmap);
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/* convert */
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direct = (struct nilfs_direct *)bmap;
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dptrs = nilfs_direct_dptrs(direct);
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dptrs = nilfs_direct_dptrs(bmap);
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for (i = 0, j = 0; i < NILFS_DIRECT_NBLOCKS; i++) {
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if ((j < n) && (i == keys[j])) {
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dptrs[i] = (i != key) ?
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@ -272,7 +261,6 @@ int nilfs_direct_delete_and_convert(struct nilfs_bmap *bmap,
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static int nilfs_direct_propagate(struct nilfs_bmap *bmap,
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struct buffer_head *bh)
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{
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struct nilfs_direct *direct = (struct nilfs_direct *)bmap;
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struct nilfs_palloc_req oldreq, newreq;
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struct inode *dat;
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__u64 key;
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@ -284,7 +272,7 @@ static int nilfs_direct_propagate(struct nilfs_bmap *bmap,
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dat = nilfs_bmap_get_dat(bmap);
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key = nilfs_bmap_data_get_key(bmap, bh);
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ptr = nilfs_direct_get_ptr(direct, key);
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ptr = nilfs_direct_get_ptr(bmap, key);
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if (!buffer_nilfs_volatile(bh)) {
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oldreq.pr_entry_nr = ptr;
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newreq.pr_entry_nr = ptr;
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@ -294,20 +282,20 @@ static int nilfs_direct_propagate(struct nilfs_bmap *bmap,
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nilfs_dat_commit_update(dat, &oldreq, &newreq,
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bmap->b_ptr_type == NILFS_BMAP_PTR_VS);
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set_buffer_nilfs_volatile(bh);
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nilfs_direct_set_ptr(direct, key, newreq.pr_entry_nr);
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nilfs_direct_set_ptr(bmap, key, newreq.pr_entry_nr);
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} else
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ret = nilfs_dat_mark_dirty(dat, ptr);
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return ret;
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}
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static int nilfs_direct_assign_v(struct nilfs_direct *direct,
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static int nilfs_direct_assign_v(struct nilfs_bmap *direct,
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__u64 key, __u64 ptr,
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struct buffer_head **bh,
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sector_t blocknr,
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union nilfs_binfo *binfo)
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{
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struct inode *dat = nilfs_bmap_get_dat(&direct->d_bmap);
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struct inode *dat = nilfs_bmap_get_dat(direct);
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union nilfs_bmap_ptr_req req;
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int ret;
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@ -321,7 +309,7 @@ static int nilfs_direct_assign_v(struct nilfs_direct *direct,
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return ret;
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}
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static int nilfs_direct_assign_p(struct nilfs_direct *direct,
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static int nilfs_direct_assign_p(struct nilfs_bmap *direct,
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__u64 key, __u64 ptr,
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struct buffer_head **bh,
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sector_t blocknr,
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@ -340,18 +328,16 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap,
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sector_t blocknr,
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union nilfs_binfo *binfo)
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{
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struct nilfs_direct *direct;
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__u64 key;
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__u64 ptr;
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direct = (struct nilfs_direct *)bmap;
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key = nilfs_bmap_data_get_key(bmap, *bh);
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if (unlikely(key > NILFS_DIRECT_KEY_MAX)) {
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printk(KERN_CRIT "%s: invalid key: %llu\n", __func__,
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(unsigned long long)key);
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return -EINVAL;
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}
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ptr = nilfs_direct_get_ptr(direct, key);
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ptr = nilfs_direct_get_ptr(bmap, key);
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if (unlikely(ptr == NILFS_BMAP_INVALID_PTR)) {
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printk(KERN_CRIT "%s: invalid pointer: %llu\n", __func__,
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(unsigned long long)ptr);
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@ -359,8 +345,8 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap,
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}
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return NILFS_BMAP_USE_VBN(bmap) ?
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nilfs_direct_assign_v(direct, key, ptr, bh, blocknr, binfo) :
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nilfs_direct_assign_p(direct, key, ptr, bh, blocknr, binfo);
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nilfs_direct_assign_v(bmap, key, ptr, bh, blocknr, binfo) :
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nilfs_direct_assign_p(bmap, key, ptr, bh, blocknr, binfo);
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}
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static const struct nilfs_bmap_operations nilfs_direct_ops = {
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