diff options
Diffstat (limited to 'fs/xfs/xfs_inode.h')
-rw-r--r-- | fs/xfs/xfs_inode.h | 134 |
1 files changed, 1 insertions, 133 deletions
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index de4f963b268..bf0f714081f 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -22,58 +22,7 @@ struct posix_acl; struct xfs_dinode; struct xfs_inode; -/* - * The following xfs_ext_irec_t struct introduces a second (top) level - * to the in-core extent allocation scheme. These structs are allocated - * in a contiguous block, creating an indirection array where each entry - * (irec) contains a pointer to a buffer of in-core extent records which - * it manages. Each extent buffer is 4k in size, since 4k is the system - * page size on Linux i386 and systems with larger page sizes don't seem - * to gain much, if anything, by using their native page size as the - * extent buffer size. Also, using 4k extent buffers everywhere provides - * a consistent interface for CXFS across different platforms. - * - * There is currently no limit on the number of irec's (extent lists) - * allowed, so heavily fragmented files may require an indirection array - * which spans multiple system pages of memory. The number of extents - * which would require this amount of contiguous memory is very large - * and should not cause problems in the foreseeable future. However, - * if the memory needed for the contiguous array ever becomes a problem, - * it is possible that a third level of indirection may be required. - */ -typedef struct xfs_ext_irec { - xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ - xfs_extnum_t er_extoff; /* extent offset in file */ - xfs_extnum_t er_extcount; /* number of extents in page/block */ -} xfs_ext_irec_t; - -/* - * File incore extent information, present for each of data & attr forks. - */ -#define XFS_IEXT_BUFSZ 4096 -#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) -#define XFS_INLINE_EXTS 2 -#define XFS_INLINE_DATA 32 -typedef struct xfs_ifork { - int if_bytes; /* bytes in if_u1 */ - int if_real_bytes; /* bytes allocated in if_u1 */ - struct xfs_btree_block *if_broot; /* file's incore btree root */ - short if_broot_bytes; /* bytes allocated for root */ - unsigned char if_flags; /* per-fork flags */ - union { - xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */ - xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ - char *if_data; /* inline file data */ - } if_u1; - union { - xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS]; - /* very small file extents */ - char if_inline_data[XFS_INLINE_DATA]; - /* very small file data */ - xfs_dev_t if_rdev; /* dev number if special */ - uuid_t if_uuid; /* mount point value */ - } if_u2; -} xfs_ifork_t; +#include "xfs_inode_fork.h" /* * Inode location information. Stored in the inode and passed to @@ -115,57 +64,6 @@ struct xfs_imap { #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ #define XFS_ICHGTIME_CREATE 0x4 /* inode create timestamp */ -/* - * Per-fork incore inode flags. - */ -#define XFS_IFINLINE 0x01 /* Inline data is read in */ -#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ -#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ -#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ - -/* - * Fork handling. - */ - -#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) -#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) - -#define XFS_IFORK_PTR(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - &(ip)->i_df : \ - (ip)->i_afp) -#define XFS_IFORK_DSIZE(ip) \ - (XFS_IFORK_Q(ip) ? \ - XFS_IFORK_BOFF(ip) : \ - XFS_LITINO((ip)->i_mount, (ip)->i_d.di_version)) -#define XFS_IFORK_ASIZE(ip) \ - (XFS_IFORK_Q(ip) ? \ - XFS_LITINO((ip)->i_mount, (ip)->i_d.di_version) - \ - XFS_IFORK_BOFF(ip) : \ - 0) -#define XFS_IFORK_SIZE(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - XFS_IFORK_DSIZE(ip) : \ - XFS_IFORK_ASIZE(ip)) -#define XFS_IFORK_FORMAT(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - (ip)->i_d.di_format : \ - (ip)->i_d.di_aformat) -#define XFS_IFORK_FMT_SET(ip,w,n) \ - ((w) == XFS_DATA_FORK ? \ - ((ip)->i_d.di_format = (n)) : \ - ((ip)->i_d.di_aformat = (n))) -#define XFS_IFORK_NEXTENTS(ip,w) \ - ((w) == XFS_DATA_FORK ? \ - (ip)->i_d.di_nextents : \ - (ip)->i_d.di_anextents) -#define XFS_IFORK_NEXT_SET(ip,w,n) \ - ((w) == XFS_DATA_FORK ? \ - ((ip)->i_d.di_nextents = (n)) : \ - ((ip)->i_d.di_anextents = (n))) -#define XFS_IFORK_MAXEXT(ip, w) \ - (XFS_IFORK_SIZE(ip, w) / sizeof(xfs_bmbt_rec_t)) - #ifdef __KERNEL__ @@ -517,35 +415,6 @@ int xfs_iread(struct xfs_mount *, struct xfs_trans *, void xfs_dinode_calc_crc(struct xfs_mount *, struct xfs_dinode *); void xfs_dinode_to_disk(struct xfs_dinode *, struct xfs_icdinode *); -void xfs_idestroy_fork(struct xfs_inode *, int); -void xfs_idata_realloc(struct xfs_inode *, int, int); -void xfs_iroot_realloc(struct xfs_inode *, int, int); -int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); -int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); - -xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); -void xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t, - xfs_bmbt_irec_t *, int); -void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); -void xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int); -void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); -void xfs_iext_realloc_direct(xfs_ifork_t *, int); -void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); -void xfs_iext_inline_to_direct(xfs_ifork_t *, int); -void xfs_iext_destroy(xfs_ifork_t *); -xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); -xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); -xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); -void xfs_iext_irec_init(xfs_ifork_t *); -xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); -void xfs_iext_irec_remove(xfs_ifork_t *, int); -void xfs_iext_irec_compact(xfs_ifork_t *); -void xfs_iext_irec_compact_pages(xfs_ifork_t *); -void xfs_iext_irec_compact_full(xfs_ifork_t *); -void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); bool xfs_can_free_eofblocks(struct xfs_inode *, bool); #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) @@ -556,7 +425,6 @@ void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); #define xfs_inobp_check(mp, bp) #endif /* DEBUG */ -extern struct kmem_zone *xfs_ifork_zone; extern struct kmem_zone *xfs_inode_zone; extern const struct xfs_buf_ops xfs_inode_buf_ops; |