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feat: page cache backed by vnode instead of filep

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1, change the owner of page to vnode
2, save the file path in vnode

close: #I4AGBR
Signed-off-by: Leon Chan <chenwei26@huawei.com>
Change-Id: I04f93e344c7231d1731746456babc419a6139e52
Signed-off-by: Leon Chan <chenwei26@huawei.com>
This commit is contained in:
Leon Chan
2021-08-05 19:53:57 +08:00
parent e5c7549bc2
commit 027fa6136a
19 changed files with 461 additions and 546 deletions
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75
fs/include/fs/fs_operation.h
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@@ -41,81 +41,6 @@ extern "C" {
#endif /* __cplusplus */
#endif /* __cplusplus */
/* vfs/fs_file_mapping.c ****************************************************/
/****************************************************************************
* Name: init_file_mapping
*
* Description:
* Init the global management structure of path <-> page_mapping
*
****************************************************************************/
extern UINT32 init_file_mapping(void);
/****************************************************************************
* Name: add_mapping
*
* Description:
* Create a new path <-> page_mapping mapping and add to global list.
*
****************************************************************************/
extern void add_mapping(struct file *filep, const char *fullpath);
/****************************************************************************
* Name: find_mapping
*
* Description:
* Find the page_mapping for path in global list.
*
****************************************************************************/
extern struct page_mapping *find_mapping(const char *path);
/****************************************************************************
* Name: remove_mapping
*
* Description:
* Drop all the page-caches for the file, and then remove mapping between
* the file and pagecache.
* ex_filp NULL: do not exclude any file, just matching the fullpath;
* ex_filp not NULL: exclude it, which means, ex_filp can be open.
*
****************************************************************************/
extern int remove_mapping(const char *fullpath);
/****************************************************************************
* Name: rename_mapping
*
* Description:
* Rename the mapping from global path <-> page_mapping list.
*
****************************************************************************/
extern void rename_mapping(const char *src, const char *dst);
/****************************************************************************
* Name: dec_mapping
*
* Description:
* Decrease the refcnt of mapping.
*
****************************************************************************/
extern void dec_mapping_nolock(struct page_mapping *mapping);
/****************************************************************************
* Name: update_file_path
*
* Description:
* Update the path in file descriptors when do renaming.
*
****************************************************************************/
extern int update_file_path(const char *old_path, const char *new_path);
/**
* @ingroup fs
* @brief Initializes the vfs filesystem