#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; }; 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); } #endif