diff options
Diffstat (limited to 'fs/erofs/internal.h')
| -rw-r--r-- | fs/erofs/internal.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 543c2ff97d30..9524e155b38f 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -2,6 +2,7 @@ /* * Copyright (C) 2017-2018 HUAWEI, Inc. * https://www.huawei.com/ + * Copyright (C) 2021, Alibaba Cloud */ #ifndef __EROFS_INTERNAL_H #define __EROFS_INTERNAL_H @@ -15,6 +16,7 @@ #include <linux/magic.h> #include <linux/slab.h> #include <linux/vmalloc.h> +#include <linux/iomap.h> #include "erofs_fs.h" /* redefine pr_fmt "erofs: " */ @@ -83,6 +85,7 @@ struct erofs_sb_info { struct erofs_sb_lz4_info lz4; #endif /* CONFIG_EROFS_FS_ZIP */ + struct dax_device *dax_dev; u32 blocks; u32 meta_blkaddr; #ifdef CONFIG_EROFS_FS_XATTR @@ -115,6 +118,8 @@ struct erofs_sb_info { /* Mount flags set via mount options or defaults */ #define EROFS_MOUNT_XATTR_USER 0x00000010 #define EROFS_MOUNT_POSIX_ACL 0x00000020 +#define EROFS_MOUNT_DAX_ALWAYS 0x00000040 +#define EROFS_MOUNT_DAX_NEVER 0x00000080 #define clear_opt(ctx, option) ((ctx)->mount_opt &= ~EROFS_MOUNT_##option) #define set_opt(ctx, option) ((ctx)->mount_opt |= EROFS_MOUNT_##option) @@ -257,6 +262,10 @@ struct erofs_inode { union { erofs_blk_t raw_blkaddr; + struct { + unsigned short chunkformat; + unsigned char chunkbits; + }; #ifdef CONFIG_EROFS_FS_ZIP struct { unsigned short z_advise; @@ -353,8 +362,15 @@ struct erofs_map_blocks { /* Flags used by erofs_map_blocks_flatmode() */ #define EROFS_GET_BLOCKS_RAW 0x0001 +/* + * Used to get the exact decompressed length, e.g. fiemap (consider lookback + * approach instead if possible since it's more metadata lightweight.) + */ +#define EROFS_GET_BLOCKS_FIEMAP 0x0002 /* zmap.c */ +extern const struct iomap_ops z_erofs_iomap_report_ops; + #ifdef CONFIG_EROFS_FS_ZIP int z_erofs_fill_inode(struct inode *inode); int z_erofs_map_blocks_iter(struct inode *inode, @@ -371,7 +387,10 @@ static inline int z_erofs_map_blocks_iter(struct inode *inode, #endif /* !CONFIG_EROFS_FS_ZIP */ /* data.c */ +extern const struct file_operations erofs_file_fops; struct page *erofs_get_meta_page(struct super_block *sb, erofs_blk_t blkaddr); +int erofs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, + u64 start, u64 len); /* inode.c */ static inline unsigned long erofs_inode_hash(erofs_nid_t nid) @@ -441,8 +460,7 @@ int __init z_erofs_init_zip_subsystem(void); void z_erofs_exit_zip_subsystem(void); 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); +int erofs_try_to_free_cached_page(struct page *page); int z_erofs_load_lz4_config(struct super_block *sb, struct erofs_super_block *dsb, struct z_erofs_lz4_cfgs *lz4, int len); |