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422 giacomo 1
#ifndef _REISER_FS_I
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#define _REISER_FS_I
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#include <linux/list.h>
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/** bitmasks for i_flags field in reiserfs-specific part of inode */
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typedef enum {
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    /** this says what format of key do all items (but stat data) of
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      an object have.  If this is set, that format is 3.6 otherwise
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      - 3.5 */
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    i_item_key_version_mask    =  0x0001,
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    /** If this is unset, object has 3.5 stat data, otherwise, it has
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      3.6 stat data with 64bit size, 32bit nlink etc. */
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    i_stat_data_version_mask   =  0x0002,
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    /** file might need tail packing on close */
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    i_pack_on_close_mask       =  0x0004,
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    /** don't pack tail of file */
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    i_nopack_mask              =  0x0008,
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    /** If those is set, "safe link" was created for this file during
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      truncate or unlink. Safe link is used to avoid leakage of disk
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      space on crash with some files open, but unlinked. */
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    i_link_saved_unlink_mask   =  0x0010,
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    i_link_saved_truncate_mask =  0x0020
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} reiserfs_inode_flags;
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struct reiserfs_inode_info {
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    __u32 i_key [4];/* key is still 4 32 bit integers */
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    /** transient inode flags that are never stored on disk. Bitmasks
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      for this field are defined above. */
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    __u32 i_flags;
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    __u32 i_first_direct_byte; // offset of first byte stored in direct item.
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    /* copy of persistent inode flags read from sd_attrs. */
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    __u32 i_attrs;
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    int i_prealloc_block; /* first unused block of a sequence of unused blocks */
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    int i_prealloc_count; /* length of that sequence */
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    struct list_head i_prealloc_list; /* per-transaction list of inodes which
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                                       * have preallocated blocks */
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    int new_packing_locality:1;       /* new_packig_locality is created; new blocks
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                                       * for the contents of this directory should be
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                                       * displaced */
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    /* we use these for fsync or O_SYNC to decide which transaction
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    ** needs to be committed in order for this inode to be properly
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    ** flushed */
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    unsigned long i_trans_id ;
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    unsigned long i_trans_index ;
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    struct inode vfs_inode;
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};
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#endif