123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263 |
- #ifndef __SHMEM_FS_H
- #define __SHMEM_FS_H
- #include <linux/swap.h>
- #include <linux/mempolicy.h>
- /* 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 */
- int policy; /* Default NUMA memory alloc policy */
- nodemask_t policy_nodes; /* nodemask for preferred and bind */
- spinlock_t stat_lock;
- };
- 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, struct nameidata *);
- 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
|