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f2fs: support 64-bits key in f2fs rb-tree node entry 

then, we can add specified entry into rb-tree with 64-bits segment time
as key.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
zero-sugar-mainline-defconfig
Chao Yu 2020-08-04 21:14:48 +08:00 committed by Jaegeuk Kim
parent c5d02785c5
commit 2e9b2bb250
3 changed files with 49 additions and 7 deletions
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37
fs/f2fs/extent_cache.c
View File

@ -58,6 +58,29 @@ struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
return re;
}
struct rb_node **f2fs_lookup_rb_tree_ext(struct f2fs_sb_info *sbi,
struct rb_root_cached *root,
struct rb_node **parent,
unsigned long long key, bool *leftmost)
{
struct rb_node **p = &root->rb_root.rb_node;
struct rb_entry *re;
while (*p) {
*parent = *p;
re = rb_entry(*parent, struct rb_entry, rb_node);
if (key < re->key) {
p = &(*p)->rb_left;
} else {
p = &(*p)->rb_right;
*leftmost = false;
}
}
return p;
}
struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
struct rb_root_cached *root,
struct rb_node **parent,
@ -166,7 +189,7 @@ lookup_neighbors:
}
bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
struct rb_root_cached *root)
struct rb_root_cached *root, bool check_key)
{
#ifdef CONFIG_F2FS_CHECK_FS
struct rb_node *cur = rb_first_cached(root), *next;
@ -183,13 +206,23 @@ bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
cur_re = rb_entry(cur, struct rb_entry, rb_node);
next_re = rb_entry(next, struct rb_entry, rb_node);
if (check_key) {
if (cur_re->key > next_re->key) {
f2fs_info(sbi, "inconsistent rbtree, "
"cur(%llu) next(%llu)",
cur_re->key, next_re->key);
return false;
}
goto next;
}
if (cur_re->ofs + cur_re->len > next_re->ofs) {
f2fs_info(sbi, "inconsistent rbtree, cur(%u, %u) next(%u, %u)",
cur_re->ofs, cur_re->len,
next_re->ofs, next_re->len);
return false;
}
next:
cur = next;
}
#endif

15
fs/f2fs/f2fs.h
View File

@ -612,8 +612,13 @@ enum {
struct rb_entry {
struct rb_node rb_node; /* rb node located in rb-tree */
unsigned int ofs; /* start offset of the entry */
unsigned int len; /* length of the entry */
union {
struct {
unsigned int ofs; /* start offset of the entry */
unsigned int len; /* length of the entry */
};
unsigned long long key; /* 64-bits key */
};
};
struct extent_info {
@ -3806,6 +3811,10 @@ void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
*/
struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
struct rb_entry *cached_re, unsigned int ofs);
struct rb_node **f2fs_lookup_rb_tree_ext(struct f2fs_sb_info *sbi,
struct rb_root_cached *root,
struct rb_node **parent,
unsigned long long key, bool *left_most);
struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
struct rb_root_cached *root,
struct rb_node **parent,
@ -3816,7 +3825,7 @@ struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
struct rb_node ***insert_p, struct rb_node **insert_parent,
bool force, bool *leftmost);
bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
struct rb_root_cached *root);
struct rb_root_cached *root, bool check_key);
unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
void f2fs_init_extent_tree(struct inode *inode, struct page *ipage);
void f2fs_drop_extent_tree(struct inode *inode);

4
fs/f2fs/segment.c
View File

@ -1525,7 +1525,7 @@ retry:
goto next;
if (unlikely(dcc->rbtree_check))
f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
&dcc->root));
&dcc->root, false));
blk_start_plug(&plug);
list_for_each_entry_safe(dc, tmp, pend_list, list) {
f2fs_bug_on(sbi, dc->state != D_PREP);
@ -2892,7 +2892,7 @@ next:
mutex_lock(&dcc->cmd_lock);
if (unlikely(dcc->rbtree_check))
f2fs_bug_on(sbi, !f2fs_check_rb_tree_consistence(sbi,
&dcc->root));
&dcc->root, false));
dc = (struct discard_cmd *)f2fs_lookup_rb_tree_ret(&dcc->root,
NULL, start,