hash

函数名称：hash

函数原型：static unsigned long hash(struct super_block *sb, unsigned long hashval)

返回类型：unsigned long

参数：

类型	参数	名称
struct super_block *	sb
unsigned long	hashval

478

tmp等于hashval乘sb按位异或The "GOLDEN_RATIO_PRIME" is used in ifs/btrfs/brtfs_inode.h and* fs/inode.c. It's not actually prime any more (the previous primes* were actively bad for hashing), but the name remains.加hashval的和除L1_CACHE_BYTES

480

tmp等于tmp按位异或tmp按位异或The "GOLDEN_RATIO_PRIME" is used in ifs/btrfs/brtfs_inode.h and* fs/inode.c. It's not actually prime any more (the previous primes* were actively bad for hashing), but the name remains.的值右移i_hash_shift位

481

返回:tmp按位与Inode locking rules:* inode->i_lock protects:* inode->i_state, inode->i_hash, __iget()* Inode LRU list locks protect:* inode->i_sb->s_inode_lru, inode->i_lru* inode->i_sb->s_inode_list_lock protects:* inode->i_sb->s_inodes, inode->i_sb_list* bdi->wb

**调用者**
名称	描述
__insert_inode_hash	在哈希表中插入索引节点
inode_insert5	de_insert5 - obtain an inode from a mounted file system@inode: pre-allocated inode to use for insert to cache@hashval: hash value (usually inode number) to get@test: callback used for comparisons between inodes@set: callback used to initialize a new
iget_locked	从文件系统上获得索引节点
test_inode_iunique	search the inode cache for a matching inode number.* If we find one, then the inode number we are trying to* allocate is not unique and so we should not use it.* Returns 1 if the inode number is unique, 0 if it is not.
ilookup5_nowait	lookup5_nowait - search for an inode in the inode cache@sb: super block of file system to search@hashval: hash value (usually inode number) to search for@test: callback used for comparisons between inodes@data: opaque data pointer to pass to @test
ilookup	在高速缓存查找索引节点
find_inode_nowait	d_inode_nowait - find an inode in the inode cache@sb: super block of file system to search@hashval: hash value (usually inode number) to search for@match: callback used for comparisons between inodes@data: opaque data pointer to pass to @match* Search
insert_inode_locked

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支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码