From 8a6d48c0542876eb3acfc0970c0ab7872db08d5f Mon Sep 17 00:00:00 2001 From: Zheng Da Date: Sun, 6 Dec 2009 05:26:23 +0100 Subject: check in the original version of dde linux26. --- libdde_linux26/contrib/include/linux/shmem_fs.h | 65 +++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 libdde_linux26/contrib/include/linux/shmem_fs.h (limited to 'libdde_linux26/contrib/include/linux/shmem_fs.h') diff --git a/libdde_linux26/contrib/include/linux/shmem_fs.h b/libdde_linux26/contrib/include/linux/shmem_fs.h new file mode 100644 index 00000000..fd83f258 --- /dev/null +++ b/libdde_linux26/contrib/include/linux/shmem_fs.h @@ -0,0 +1,65 @@ +#ifndef __SHMEM_FS_H +#define __SHMEM_FS_H + +#include +#include + +/* inode in-kernel data */ + +#define SHMEM_NR_DIRECT 16 + +struct shmem_inode_info { + spinlock_t lock; + unsigned long flags; + unsigned long alloced; /* data pages alloced to file */ + unsigned long swapped; /* subtotal assigned to swap */ + unsigned long next_index; /* highest alloced index + 1 */ + struct shared_policy policy; /* NUMA memory alloc policy */ + struct page *i_indirect; /* top indirect blocks page */ + swp_entry_t i_direct[SHMEM_NR_DIRECT]; /* first blocks */ + struct list_head swaplist; /* chain of maybes on swap */ + struct inode vfs_inode; +#ifdef CONFIG_TMPFS_POSIX_ACL + struct posix_acl *i_acl; + struct posix_acl *i_default_acl; +#endif +}; + +struct shmem_sb_info { + unsigned long max_blocks; /* How many blocks are allowed */ + unsigned long free_blocks; /* How many are left for allocation */ + unsigned long max_inodes; /* How many inodes are allowed */ + unsigned long free_inodes; /* How many are left for allocation */ + spinlock_t stat_lock; /* Serialize shmem_sb_info changes */ + uid_t uid; /* Mount uid for root directory */ + gid_t gid; /* Mount gid for root directory */ + mode_t mode; /* Mount mode for root directory */ + struct mempolicy *mpol; /* default memory policy for mappings */ +}; + +static inline struct shmem_inode_info *SHMEM_I(struct inode *inode) +{ + return container_of(inode, struct shmem_inode_info, vfs_inode); +} + +#ifdef CONFIG_TMPFS_POSIX_ACL +int shmem_permission(struct inode *, int); +int shmem_acl_init(struct inode *, struct inode *); +void shmem_acl_destroy_inode(struct inode *); + +extern struct xattr_handler shmem_xattr_acl_access_handler; +extern struct xattr_handler shmem_xattr_acl_default_handler; + +extern struct generic_acl_operations shmem_acl_ops; + +#else +static inline int shmem_acl_init(struct inode *inode, struct inode *dir) +{ + return 0; +} +static inline void shmem_acl_destroy_inode(struct inode *inode) +{ +} +#endif /* CONFIG_TMPFS_POSIX_ACL */ + +#endif -- cgit v1.2.3