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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [shmem_fs.h] - Blame information for rev 81

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Line No. Rev Author Line
1 62 marcus.erl
#ifndef __SHMEM_FS_H
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#define __SHMEM_FS_H
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#include <linux/swap.h>
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#include <linux/mempolicy.h>
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/* inode in-kernel data */
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#define SHMEM_NR_DIRECT 16
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struct shmem_inode_info {
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        spinlock_t              lock;
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        unsigned long           flags;
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        unsigned long           alloced;        /* data pages alloced to file */
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        unsigned long           swapped;        /* subtotal assigned to swap */
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        unsigned long           next_index;     /* highest alloced index + 1 */
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        struct shared_policy    policy;         /* NUMA memory alloc policy */
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        struct page             *i_indirect;    /* top indirect blocks page */
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        swp_entry_t             i_direct[SHMEM_NR_DIRECT]; /* first blocks */
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        struct list_head        swaplist;       /* chain of maybes on swap */
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        struct inode            vfs_inode;
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#ifdef CONFIG_TMPFS_POSIX_ACL
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        struct posix_acl        *i_acl;
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        struct posix_acl        *i_default_acl;
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#endif
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};
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struct shmem_sb_info {
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        unsigned long max_blocks;   /* How many blocks are allowed */
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        unsigned long free_blocks;  /* How many are left for allocation */
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        unsigned long max_inodes;   /* How many inodes are allowed */
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        unsigned long free_inodes;  /* How many are left for allocation */
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        int policy;                 /* Default NUMA memory alloc policy */
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        nodemask_t policy_nodes;    /* nodemask for preferred and bind */
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        spinlock_t    stat_lock;
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};
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static inline struct shmem_inode_info *SHMEM_I(struct inode *inode)
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{
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        return container_of(inode, struct shmem_inode_info, vfs_inode);
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}
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#ifdef CONFIG_TMPFS_POSIX_ACL
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int shmem_permission(struct inode *, int, struct nameidata *);
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int shmem_acl_init(struct inode *, struct inode *);
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void shmem_acl_destroy_inode(struct inode *);
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extern struct xattr_handler shmem_xattr_acl_access_handler;
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extern struct xattr_handler shmem_xattr_acl_default_handler;
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extern struct generic_acl_operations shmem_acl_ops;
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#else
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static inline int shmem_acl_init(struct inode *inode, struct inode *dir)
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{
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        return 0;
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}
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static inline void shmem_acl_destroy_inode(struct inode *inode)
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{
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}
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#endif  /* CONFIG_TMPFS_POSIX_ACL */
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#endif

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