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staging: erofs: clean up internal.h

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Tidy up relative order of variables / declarations in internal.h,
move some local static functions out into other files and
add tags at the end of #endif acrossing several lines.

No logic change.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190731155752.210602-7-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gao Xiang 2019-07-31 23:57:36 +08:00 committed by Greg Kroah-Hartman
parent b1897c60b1
commit 14f362b4f4
5 changed files with 92 additions and 115 deletions
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27
drivers/staging/erofs/decompressor.c
View File

@ -223,6 +223,33 @@ static void copy_from_pcpubuf(struct page **out, const char *dst,
}
}
static void *erofs_vmap(struct page **pages, unsigned int count)
{
#ifdef CONFIG_EROFS_FS_USE_VM_MAP_RAM
int i = 0;
while (1) {
void *addr = vm_map_ram(pages, count, -1, PAGE_KERNEL);
/* retry two more times (totally 3 times) */
if (addr || ++i >= 3)
return addr;
vm_unmap_aliases();
}
return NULL;
#else
return vmap(pages, count, VM_MAP, PAGE_KERNEL);
#endif
}
static void erofs_vunmap(const void *mem, unsigned int count)
{
#ifdef CONFIG_EROFS_FS_USE_VM_MAP_RAM
vm_unmap_ram(mem, count);
#else
vunmap(mem);
#endif
}
static int decompress_generic(struct z_erofs_decompress_req *rq,
struct list_head *pagepool)
{

157
drivers/staging/erofs/internal.h
View File

@ -6,8 +6,8 @@
* http://www.huawei.com/
* Created by Gao Xiang <gaoxiang25@huawei.com>
*/
#ifndef __INTERNAL_H
#define __INTERNAL_H
#ifndef __EROFS_INTERNAL_H
#define __EROFS_INTERNAL_H
#include <linux/fs.h>
#include <linux/dcache.h>
@ -28,15 +28,11 @@
#define infoln(x, ...) pr_info(x "\n", ##__VA_ARGS__)
#ifdef CONFIG_EROFS_FS_DEBUG
#define debugln(x, ...) pr_debug(x "\n", ##__VA_ARGS__)
#define dbg_might_sleep might_sleep
#define DBG_BUGON BUG_ON
#else
#define debugln(x, ...) ((void)0)
#define dbg_might_sleep() ((void)0)
#define DBG_BUGON(x) ((void)(x))
#endif
#endif /* !CONFIG_EROFS_FS_DEBUG */
enum {
FAULT_KMALLOC,
@ -53,7 +49,7 @@ struct erofs_fault_info {
unsigned int inject_rate;
unsigned int inject_type;
};
#endif
#endif /* CONFIG_EROFS_FAULT_INJECTION */
#ifdef CONFIG_EROFS_FS_ZIP_CACHE_BIPOLAR
#define EROFS_FS_ZIP_CACHE_LVL (2)
@ -71,6 +67,9 @@ struct erofs_fault_info {
#define EROFS_SUPER_MAGIC EROFS_SUPER_MAGIC_V1
typedef u64 erofs_nid_t;
typedef u64 erofs_off_t;
/* data type for filesystem-wide blocks number */
typedef u32 erofs_blk_t;
struct erofs_sb_info {
/* list for all registered superblocks, mainly for shrinker */
@ -154,7 +153,7 @@ static inline bool time_to_inject(struct erofs_sb_info *sbi, int type)
static inline void erofs_show_injection_info(int type)
{
}
#endif
#endif /* !CONFIG_EROFS_FAULT_INJECTION */
static inline void *erofs_kmalloc(struct erofs_sb_info *sbi,
size_t size, gfp_t flags)
@ -179,6 +178,8 @@ static inline void *erofs_kmalloc(struct erofs_sb_info *sbi,
#define test_opt(sbi, option) ((sbi)->mount_opt & EROFS_MOUNT_##option)
#ifdef CONFIG_EROFS_FS_ZIP
#define EROFS_LOCKED_MAGIC (INT_MIN | 0xE0F510CCL)
/* basic unit of the workstation of a super_block */
struct erofs_workgroup {
/* the workgroup index in the workstation */
@ -188,8 +189,6 @@ struct erofs_workgroup {
atomic_t refcount;
};
#define EROFS_LOCKED_MAGIC (INT_MIN | 0xE0F510CCL)
#if defined(CONFIG_SMP)
static inline bool erofs_workgroup_try_to_freeze(struct erofs_workgroup *grp,
int val)
@ -246,50 +245,24 @@ static inline int erofs_wait_on_workgroup_freezed(struct erofs_workgroup *grp)
DBG_BUGON(v == EROFS_LOCKED_MAGIC);
return v;
}
#endif
#endif /* !CONFIG_SMP */
int erofs_workgroup_put(struct erofs_workgroup *grp);
struct erofs_workgroup *erofs_find_workgroup(struct super_block *sb,
pgoff_t index, bool *tag);
int erofs_register_workgroup(struct super_block *sb,
struct erofs_workgroup *grp, bool tag);
unsigned long erofs_shrink_workstation(struct erofs_sb_info *sbi,
unsigned long nr_shrink, bool cleanup);
void erofs_workgroup_free_rcu(struct erofs_workgroup *grp);
/* hard limit of pages per compressed cluster */
#define Z_EROFS_CLUSTER_MAX_PAGES (CONFIG_EROFS_FS_CLUSTER_PAGE_LIMIT)
#define EROFS_PCPUBUF_NR_PAGES Z_EROFS_CLUSTER_MAX_PAGES
#ifdef EROFS_FS_HAS_MANAGED_CACHE
int erofs_try_to_free_all_cached_pages(struct erofs_sb_info *sbi,
struct erofs_workgroup *egrp);
int erofs_try_to_free_cached_page(struct address_space *mapping,
struct page *page);
#define MNGD_MAPPING(sbi) ((sbi)->managed_cache->i_mapping)
static inline bool erofs_page_is_managed(const struct erofs_sb_info *sbi,
struct page *page)
{
return page->mapping == MNGD_MAPPING(sbi);
}
#else
#define MNGD_MAPPING(sbi) (NULL)
static inline bool erofs_page_is_managed(const struct erofs_sb_info *sbi,
struct page *page) { return false; }
#endif
#define DEFAULT_MAX_SYNC_DECOMPRESS_PAGES 3
static inline bool __should_decompress_synchronously(struct erofs_sb_info *sbi,
unsigned int nr)
{
return nr <= sbi->max_sync_decompress_pages;
}
/* page count of a compressed cluster */
#define erofs_clusterpages(sbi) ((1 << (sbi)->clusterbits) / PAGE_SIZE)
int __init z_erofs_init_zip_subsystem(void);
void z_erofs_exit_zip_subsystem(void);
#else
#define EROFS_PCPUBUF_NR_PAGES 0
/* dummy initializer/finalizer for the decompression subsystem */
static inline int z_erofs_init_zip_subsystem(void) { return 0; }
static inline void z_erofs_exit_zip_subsystem(void) {}
#endif
#endif /* !CONFIG_EROFS_FS_ZIP */
/* we strictly follow PAGE_SIZE and no buffer head yet */
#define LOG_BLOCK_SIZE PAGE_SHIFT
@ -308,23 +281,6 @@ static inline void z_erofs_exit_zip_subsystem(void) {}
#define ROOT_NID(sb) ((sb)->root_nid)
#ifdef CONFIG_EROFS_FS_ZIP
/* hard limit of pages per compressed cluster */
#define Z_EROFS_CLUSTER_MAX_PAGES (CONFIG_EROFS_FS_CLUSTER_PAGE_LIMIT)
/* page count of a compressed cluster */
#define erofs_clusterpages(sbi) ((1 << (sbi)->clusterbits) / PAGE_SIZE)
#define EROFS_PCPUBUF_NR_PAGES Z_EROFS_CLUSTER_MAX_PAGES
#else
#define EROFS_PCPUBUF_NR_PAGES 0
#endif
typedef u64 erofs_off_t;
/* data type for filesystem-wide blocks number */
typedef u32 erofs_blk_t;
#define erofs_blknr(addr) ((addr) / EROFS_BLKSIZ)
#define erofs_blkoff(addr) ((addr) % EROFS_BLKSIZ)
#define blknr_to_addr(nr) ((erofs_off_t)(nr) * EROFS_BLKSIZ)
@ -364,7 +320,7 @@ struct erofs_vnode {
unsigned char z_logical_clusterbits;
unsigned char z_physical_clusterbits[2];
};
#endif
#endif /* CONFIG_EROFS_FS_ZIP */
};
/* the corresponding vfs inode */
struct inode vfs_inode;
@ -472,13 +428,14 @@ static inline int z_erofs_map_blocks_iter(struct inode *inode,
{
return -ENOTSUPP;
}
#endif
#endif /* !CONFIG_EROFS_FS_ZIP */
/* data.c */
static inline struct bio *
erofs_grab_bio(struct super_block *sb,
erofs_blk_t blkaddr, unsigned int nr_pages, void *bi_private,
bio_end_io_t endio, bool nofail)
static inline struct bio *erofs_grab_bio(struct super_block *sb,
erofs_blk_t blkaddr,
unsigned int nr_pages,
void *bi_private, bio_end_io_t endio,
bool nofail)
{
const gfp_t gfp = GFP_NOIO;
struct bio *bio;
@ -525,20 +482,13 @@ static inline struct page *erofs_get_meta_page(struct super_block *sb,
return __erofs_get_meta_page(sb, blkaddr, prio, false);
}
static inline struct page *erofs_get_meta_page_nofail(struct super_block *sb,
erofs_blk_t blkaddr, bool prio)
{
return __erofs_get_meta_page(sb, blkaddr, prio, true);
}
int erofs_map_blocks(struct inode *, struct erofs_map_blocks *, int);
static inline struct page *
erofs_get_inline_page(struct inode *inode,
erofs_blk_t blkaddr)
static inline struct page *erofs_get_inline_page(struct inode *inode,
erofs_blk_t blkaddr)
{
return erofs_get_meta_page(inode->i_sb,
blkaddr, S_ISDIR(inode->i_mode));
return erofs_get_meta_page(inode->i_sb, blkaddr,
S_ISDIR(inode->i_mode));
}
/* inode.c */
@ -578,34 +528,7 @@ int erofs_namei(struct inode *dir, struct qstr *name,
/* dir.c */
extern const struct file_operations erofs_dir_fops;
static inline void *erofs_vmap(struct page **pages, unsigned int count)
{
#ifdef CONFIG_EROFS_FS_USE_VM_MAP_RAM
int i = 0;
while (1) {
void *addr = vm_map_ram(pages, count, -1, PAGE_KERNEL);
/* retry two more times (totally 3 times) */
if (addr || ++i >= 3)
return addr;
vm_unmap_aliases();
}
return NULL;
#else
return vmap(pages, count, VM_MAP, PAGE_KERNEL);
#endif
}
static inline void erofs_vunmap(const void *mem, unsigned int count)
{
#ifdef CONFIG_EROFS_FS_USE_VM_MAP_RAM
vm_unmap_ram(mem, count);
#else
vunmap(mem);
#endif
}
/* utils.c */
/* utils.c / zdata.c */
extern struct shrinker erofs_shrinker_info;
struct page *erofs_allocpage(struct list_head *pool, gfp_t gfp);
@ -625,12 +548,20 @@ static inline void *erofs_get_pcpubuf(unsigned int pagenr)
#define erofs_put_pcpubuf(buf) do {} while (0)
#endif
int erofs_workgroup_put(struct erofs_workgroup *grp);
struct erofs_workgroup *erofs_find_workgroup(struct super_block *sb,
pgoff_t index, bool *tag);
int erofs_register_workgroup(struct super_block *sb,
struct erofs_workgroup *grp, bool tag);
unsigned long erofs_shrink_workstation(struct erofs_sb_info *sbi,
unsigned long nr_shrink, bool cleanup);
void erofs_workgroup_free_rcu(struct erofs_workgroup *grp);
int erofs_try_to_free_all_cached_pages(struct erofs_sb_info *sbi,
struct erofs_workgroup *egrp);
int erofs_try_to_free_cached_page(struct address_space *mapping,
struct page *page);
void erofs_register_super(struct super_block *sb);
void erofs_unregister_super(struct super_block *sb);
#ifndef lru_to_page
#define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
#endif
#endif
#endif /* __EROFS_INTERNAL_H */

2
drivers/staging/erofs/super.c
View File

@ -211,7 +211,7 @@ static void default_options(struct erofs_sb_info *sbi)
{
/* set up some FS parameters */
#ifdef CONFIG_EROFS_FS_ZIP
sbi->max_sync_decompress_pages = DEFAULT_MAX_SYNC_DECOMPRESS_PAGES;
sbi->max_sync_decompress_pages = 3;
#endif
#ifdef CONFIG_EROFS_FS_XATTR

8
drivers/staging/erofs/zdata.c
View File

@ -1509,6 +1509,12 @@ out:
return 0;
}
static bool should_decompress_synchronously(struct erofs_sb_info *sbi,
unsigned int nr)
{
return nr <= sbi->max_sync_decompress_pages;
}
static int z_erofs_vle_normalaccess_readpages(struct file *filp,
struct address_space *mapping,
struct list_head *pages,
@ -1517,7 +1523,7 @@ static int z_erofs_vle_normalaccess_readpages(struct file *filp,
struct inode *const inode = mapping->host;
struct erofs_sb_info *const sbi = EROFS_I_SB(inode);
bool sync = __should_decompress_synchronously(sbi, nr_pages);
bool sync = should_decompress_synchronously(sbi, nr_pages);
struct z_erofs_vle_frontend f = VLE_FRONTEND_INIT(inode);
gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL);
struct page *head = NULL;

13
drivers/staging/erofs/zdata.h
View File

@ -104,6 +104,19 @@ struct z_erofs_vle_unzip_io_sb {
struct super_block *sb;
};
#ifdef EROFS_FS_HAS_MANAGED_CACHE
#define MNGD_MAPPING(sbi) ((sbi)->managed_cache->i_mapping)
static inline bool erofs_page_is_managed(const struct erofs_sb_info *sbi,
struct page *page)
{
return page->mapping == MNGD_MAPPING(sbi);
}
#else
#define MNGD_MAPPING(sbi) (NULL)
static inline bool erofs_page_is_managed(const struct erofs_sb_info *sbi,
struct page *page) { return false; }
#endif /* !EROFS_FS_HAS_MANAGED_CACHE */
#define Z_EROFS_ONLINEPAGE_COUNT_BITS 2
#define Z_EROFS_ONLINEPAGE_COUNT_MASK ((1 << Z_EROFS_ONLINEPAGE_COUNT_BITS) - 1)
#define Z_EROFS_ONLINEPAGE_INDEX_SHIFT (Z_EROFS_ONLINEPAGE_COUNT_BITS)