cleancache_get

函数名称：If the filesystem uses exportable filehandles, use the filehandle as* the key, else use the inode number.

函数原型：static int cleancache_get_key(struct inode *inode, struct cleancache_filekey *key)

返回类型：int

参数：

类型	参数	名称
struct inode *	inode
struct cleancache_filekey *	key

153

154

如果fhfn则

155

len等于inode, fh[0]

156

如果len小于等于FILEID_ROOT或len恒等于FILEID_INVALID则返回:负1

158

如果maxlen大于CLEANCACHE_KEY_MAX则返回:负1

**调用者**
名称	描述
__cleancache_get_page	"Get" data from cleancache associated with the poolid/inode/index* that were specified when the data was put to cleanache and, if* successful, use it to fill the specified page with data and return 0.
__cleancache_put_page	"Put" data from a page to cleancache and associate it with the* (previously-obtained per-filesystem) poolid and the page's,* inode and page index. Page must be locked. Note that a put_page
__cleancache_invalidate_page	Invalidate any data from cleancache associated with the poolid and the* page's inode and page index so that a subsequent "get" will fail
__cleancache_invalidate_inode	Invalidate all data from cleancache associated with the poolid and the* mappings's inode so that all subsequent gets to this poolid/inode* will fail

函数逻辑报告