diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/xfs/xfs_bmap.h')
| -rw-r--r-- | ANDROID_3.4.5/fs/xfs/xfs_bmap.h | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/ANDROID_3.4.5/fs/xfs/xfs_bmap.h b/ANDROID_3.4.5/fs/xfs/xfs_bmap.h deleted file mode 100644 index 89ee672d..00000000 --- a/ANDROID_3.4.5/fs/xfs/xfs_bmap.h +++ /dev/null @@ -1,216 +0,0 @@ -/* - * Copyright (c) 2000-2006 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_BMAP_H__ -#define __XFS_BMAP_H__ - -struct getbmap; -struct xfs_bmbt_irec; -struct xfs_ifork; -struct xfs_inode; -struct xfs_mount; -struct xfs_trans; - -extern kmem_zone_t *xfs_bmap_free_item_zone; - -/* - * List of extents to be free "later". - * The list is kept sorted on xbf_startblock. - */ -typedef struct xfs_bmap_free_item -{ - xfs_fsblock_t xbfi_startblock;/* starting fs block number */ - xfs_extlen_t xbfi_blockcount;/* number of blocks in extent */ - struct xfs_bmap_free_item *xbfi_next; /* link to next entry */ -} xfs_bmap_free_item_t; - -/* - * Header for free extent list. - * - * xbf_low is used by the allocator to activate the lowspace algorithm - - * when free space is running low the extent allocator may choose to - * allocate an extent from an AG without leaving sufficient space for - * a btree split when inserting the new extent. In this case the allocator - * will enable the lowspace algorithm which is supposed to allow further - * allocations (such as btree splits and newroots) to allocate from - * sequential AGs. In order to avoid locking AGs out of order the lowspace - * algorithm will start searching for free space from AG 0. If the correct - * transaction reservations have been made then this algorithm will eventually - * find all the space it needs. - */ -typedef struct xfs_bmap_free -{ - xfs_bmap_free_item_t *xbf_first; /* list of to-be-free extents */ - int xbf_count; /* count of items on list */ - int xbf_low; /* alloc in low mode */ -} xfs_bmap_free_t; - -#define XFS_BMAP_MAX_NMAP 4 - -/* - * Flags for xfs_bmapi_* - */ -#define XFS_BMAPI_ENTIRE 0x001 /* return entire extent, not trimmed */ -#define XFS_BMAPI_METADATA 0x002 /* mapping metadata not user data */ -#define XFS_BMAPI_ATTRFORK 0x004 /* use attribute fork not data */ -#define XFS_BMAPI_PREALLOC 0x008 /* preallocation op: unwritten space */ -#define XFS_BMAPI_IGSTATE 0x010 /* Ignore state - */ - /* combine contig. space */ -#define XFS_BMAPI_CONTIG 0x020 /* must allocate only one extent */ -/* - * unwritten extent conversion - this needs write cache flushing and no additional - * allocation alignments. When specified with XFS_BMAPI_PREALLOC it converts - * from written to unwritten, otherwise convert from unwritten to written. - */ -#define XFS_BMAPI_CONVERT 0x040 - -#define XFS_BMAPI_FLAGS \ - { XFS_BMAPI_ENTIRE, "ENTIRE" }, \ - { XFS_BMAPI_METADATA, "METADATA" }, \ - { XFS_BMAPI_ATTRFORK, "ATTRFORK" }, \ - { XFS_BMAPI_PREALLOC, "PREALLOC" }, \ - { XFS_BMAPI_IGSTATE, "IGSTATE" }, \ - { XFS_BMAPI_CONTIG, "CONTIG" }, \ - { XFS_BMAPI_CONVERT, "CONVERT" } - - -static inline int xfs_bmapi_aflag(int w) -{ - return (w == XFS_ATTR_FORK ? XFS_BMAPI_ATTRFORK : 0); -} - -/* - * Special values for xfs_bmbt_irec_t br_startblock field. - */ -#define DELAYSTARTBLOCK ((xfs_fsblock_t)-1LL) -#define HOLESTARTBLOCK ((xfs_fsblock_t)-2LL) - -static inline void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp) -{ - ((flp)->xbf_first = NULL, (flp)->xbf_count = 0, \ - (flp)->xbf_low = 0, *(fbp) = NULLFSBLOCK); -} - -/* - * Argument structure for xfs_bmap_alloc. - */ -typedef struct xfs_bmalloca { - xfs_fsblock_t *firstblock; /* i/o first block allocated */ - struct xfs_bmap_free *flist; /* bmap freelist */ - struct xfs_trans *tp; /* transaction pointer */ - struct xfs_inode *ip; /* incore inode pointer */ - struct xfs_bmbt_irec prev; /* extent before the new one */ - struct xfs_bmbt_irec got; /* extent after, or delayed */ - - xfs_fileoff_t offset; /* offset in file filling in */ - xfs_extlen_t length; /* i/o length asked/allocated */ - xfs_fsblock_t blkno; /* starting block of new extent */ - - struct xfs_btree_cur *cur; /* btree cursor */ - xfs_extnum_t idx; /* current extent index */ - int nallocs;/* number of extents alloc'd */ - int logflags;/* flags for transaction logging */ - - xfs_extlen_t total; /* total blocks needed for xaction */ - xfs_extlen_t minlen; /* minimum allocation size (blocks) */ - xfs_extlen_t minleft; /* amount must be left after alloc */ - char eof; /* set if allocating past last extent */ - char wasdel; /* replacing a delayed allocation */ - char userdata;/* set if is user data */ - char aeof; /* allocated space at eof */ - char conv; /* overwriting unwritten extents */ -} xfs_bmalloca_t; - -/* - * Flags for xfs_bmap_add_extent*. - */ -#define BMAP_LEFT_CONTIG (1 << 0) -#define BMAP_RIGHT_CONTIG (1 << 1) -#define BMAP_LEFT_FILLING (1 << 2) -#define BMAP_RIGHT_FILLING (1 << 3) -#define BMAP_LEFT_DELAY (1 << 4) -#define BMAP_RIGHT_DELAY (1 << 5) -#define BMAP_LEFT_VALID (1 << 6) -#define BMAP_RIGHT_VALID (1 << 7) -#define BMAP_ATTRFORK (1 << 8) - -#define XFS_BMAP_EXT_FLAGS \ - { BMAP_LEFT_CONTIG, "LC" }, \ - { BMAP_RIGHT_CONTIG, "RC" }, \ - { BMAP_LEFT_FILLING, "LF" }, \ - { BMAP_RIGHT_FILLING, "RF" }, \ - { BMAP_ATTRFORK, "ATTR" } - -#if defined(__KERNEL) && defined(DEBUG) -void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt, - int whichfork, unsigned long caller_ip); -#define XFS_BMAP_TRACE_EXLIST(ip,c,w) \ - xfs_bmap_trace_exlist(ip,c,w, _THIS_IP_) -#else -#define XFS_BMAP_TRACE_EXLIST(ip,c,w) -#endif - -int xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd); -void xfs_bmap_add_free(xfs_fsblock_t bno, xfs_filblks_t len, - struct xfs_bmap_free *flist, struct xfs_mount *mp); -void xfs_bmap_cancel(struct xfs_bmap_free *flist); -void xfs_bmap_compute_maxlevels(struct xfs_mount *mp, int whichfork); -int xfs_bmap_first_unused(struct xfs_trans *tp, struct xfs_inode *ip, - xfs_extlen_t len, xfs_fileoff_t *unused, int whichfork); -int xfs_bmap_last_before(struct xfs_trans *tp, struct xfs_inode *ip, - xfs_fileoff_t *last_block, int whichfork); -int xfs_bmap_last_offset(struct xfs_trans *tp, struct xfs_inode *ip, - xfs_fileoff_t *unused, int whichfork); -int xfs_bmap_one_block(struct xfs_inode *ip, int whichfork); -int xfs_bmap_read_extents(struct xfs_trans *tp, struct xfs_inode *ip, - int whichfork); -int xfs_bmapi_read(struct xfs_inode *ip, xfs_fileoff_t bno, - xfs_filblks_t len, struct xfs_bmbt_irec *mval, - int *nmap, int flags); -int xfs_bmapi_delay(struct xfs_inode *ip, xfs_fileoff_t bno, - xfs_filblks_t len, struct xfs_bmbt_irec *mval, - int *nmap, int flags); -int xfs_bmapi_write(struct xfs_trans *tp, struct xfs_inode *ip, - xfs_fileoff_t bno, xfs_filblks_t len, int flags, - xfs_fsblock_t *firstblock, xfs_extlen_t total, - struct xfs_bmbt_irec *mval, int *nmap, - struct xfs_bmap_free *flist); -int xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip, - xfs_fileoff_t bno, xfs_filblks_t len, int flags, - xfs_extnum_t nexts, xfs_fsblock_t *firstblock, - struct xfs_bmap_free *flist, int *done); -int xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx, - xfs_extnum_t num); -uint xfs_default_attroffset(struct xfs_inode *ip); - -#ifdef __KERNEL__ -/* bmap to userspace formatter - copy to user & advance pointer */ -typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *); - -int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, - int *committed); -int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, - xfs_bmap_format_t formatter, void *arg); -int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, - int whichfork, int *eof); -int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, - int whichfork, int *count); -int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, - xfs_fileoff_t start_fsb, xfs_fileoff_t length); -#endif /* __KERNEL__ */ - -#endif /* __XFS_BMAP_H__ */ |