forked from luck/tmp_suning_uos_patched
1813dd6405
To separate the verifiers from iodone functions and associate read and write verifiers at the same time, introduce a buffer verifier operations structure to the xfs_buf. This avoids the need for assigning the write verifier, clearing the iodone function and re-running ioend processing in the read verifier, and gets rid of the nasty "b_pre_io" name for the write verifier function pointer. If we ever need to, it will also be easier to add further content specific callbacks to a buffer with an ops structure in place. We also avoid needing to export verifier functions, instead we can simply export the ops structures for those that are needed outside the function they are defined in. This patch also fixes a directory block readahead verifier issue it exposed. This patch also adds ops callbacks to the inode/alloc btree blocks initialised by growfs. These will need more work before they will work with CRCs. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Phil White <pwhite@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
153 lines
7.0 KiB
C
153 lines
7.0 KiB
C
/*
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* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_DIR2_PRIV_H__
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#define __XFS_DIR2_PRIV_H__
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/* xfs_dir2.c */
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extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino);
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extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
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extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r);
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extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space,
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xfs_dir2_db_t *dbp);
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extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
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struct xfs_buf *bp);
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extern int xfs_dir_cilookup_result(struct xfs_da_args *args,
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const unsigned char *name, int len);
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/* xfs_dir2_block.c */
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extern const struct xfs_buf_ops xfs_dir2_block_buf_ops;
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extern int xfs_dir2_block_addname(struct xfs_da_args *args);
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extern int xfs_dir2_block_getdents(struct xfs_inode *dp, void *dirent,
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xfs_off_t *offset, filldir_t filldir);
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extern int xfs_dir2_block_lookup(struct xfs_da_args *args);
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extern int xfs_dir2_block_removename(struct xfs_da_args *args);
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extern int xfs_dir2_block_replace(struct xfs_da_args *args);
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extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args,
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struct xfs_buf *lbp, struct xfs_buf *dbp);
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/* xfs_dir2_data.c */
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#ifdef DEBUG
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#define xfs_dir2_data_check(dp,bp) __xfs_dir2_data_check(dp, bp);
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#else
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#define xfs_dir2_data_check(dp,bp)
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#endif
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extern const struct xfs_buf_ops xfs_dir2_data_buf_ops;
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extern int __xfs_dir2_data_check(struct xfs_inode *dp, struct xfs_buf *bp);
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extern int xfs_dir2_data_read(struct xfs_trans *tp, struct xfs_inode *dp,
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xfs_dablk_t bno, xfs_daddr_t mapped_bno, struct xfs_buf **bpp);
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extern int xfs_dir2_data_readahead(struct xfs_trans *tp, struct xfs_inode *dp,
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xfs_dablk_t bno, xfs_daddr_t mapped_bno);
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extern struct xfs_dir2_data_free *
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xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr,
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struct xfs_dir2_data_unused *dup, int *loghead);
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extern void xfs_dir2_data_freescan(struct xfs_mount *mp,
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struct xfs_dir2_data_hdr *hdr, int *loghead);
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extern int xfs_dir2_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno,
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struct xfs_buf **bpp);
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extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_buf *bp,
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struct xfs_dir2_data_entry *dep);
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extern void xfs_dir2_data_log_header(struct xfs_trans *tp,
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struct xfs_buf *bp);
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extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_buf *bp,
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struct xfs_dir2_data_unused *dup);
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extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_buf *bp,
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xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len,
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int *needlogp, int *needscanp);
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extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_buf *bp,
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struct xfs_dir2_data_unused *dup, xfs_dir2_data_aoff_t offset,
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xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp);
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/* xfs_dir2_leaf.c */
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extern const struct xfs_buf_ops xfs_dir2_leafn_buf_ops;
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extern int xfs_dir2_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp,
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xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp);
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extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args,
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struct xfs_buf *dbp);
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extern int xfs_dir2_leaf_addname(struct xfs_da_args *args);
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extern void xfs_dir2_leaf_compact(struct xfs_da_args *args,
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struct xfs_buf *bp);
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extern void xfs_dir2_leaf_compact_x1(struct xfs_buf *bp, int *indexp,
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int *lowstalep, int *highstalep, int *lowlogp, int *highlogp);
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extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, void *dirent,
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size_t bufsize, xfs_off_t *offset, filldir_t filldir);
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extern int xfs_dir2_leaf_init(struct xfs_da_args *args, xfs_dir2_db_t bno,
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struct xfs_buf **bpp, int magic);
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extern void xfs_dir2_leaf_log_ents(struct xfs_trans *tp, struct xfs_buf *bp,
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int first, int last);
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extern void xfs_dir2_leaf_log_header(struct xfs_trans *tp,
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struct xfs_buf *bp);
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extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args);
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extern int xfs_dir2_leaf_removename(struct xfs_da_args *args);
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extern int xfs_dir2_leaf_replace(struct xfs_da_args *args);
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extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args,
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struct xfs_buf *lbp);
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extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args,
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struct xfs_buf *lbp, xfs_dir2_db_t db);
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extern struct xfs_dir2_leaf_entry *
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xfs_dir2_leaf_find_entry(struct xfs_dir2_leaf *leaf, int index, int compact,
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int lowstale, int highstale,
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int *lfloglow, int *lfloghigh);
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extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state);
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/* xfs_dir2_node.c */
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extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args,
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struct xfs_buf *lbp);
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extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_buf *bp, int *count);
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extern int xfs_dir2_leafn_lookup_int(struct xfs_buf *bp,
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struct xfs_da_args *args, int *indexp,
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struct xfs_da_state *state);
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extern int xfs_dir2_leafn_order(struct xfs_buf *leaf1_bp,
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struct xfs_buf *leaf2_bp);
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extern int xfs_dir2_leafn_split(struct xfs_da_state *state,
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struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk);
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extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action);
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extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state,
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struct xfs_da_state_blk *drop_blk,
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struct xfs_da_state_blk *save_blk);
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extern int xfs_dir2_node_addname(struct xfs_da_args *args);
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extern int xfs_dir2_node_lookup(struct xfs_da_args *args);
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extern int xfs_dir2_node_removename(struct xfs_da_args *args);
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extern int xfs_dir2_node_replace(struct xfs_da_args *args);
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extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo,
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int *rvalp);
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extern int xfs_dir2_free_read(struct xfs_trans *tp, struct xfs_inode *dp,
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xfs_dablk_t fbno, struct xfs_buf **bpp);
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/* xfs_dir2_sf.c */
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extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *sfp);
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extern xfs_ino_t xfs_dir2_sfe_get_ino(struct xfs_dir2_sf_hdr *sfp,
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struct xfs_dir2_sf_entry *sfep);
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extern int xfs_dir2_block_sfsize(struct xfs_inode *dp,
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struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp);
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extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_buf *bp,
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int size, xfs_dir2_sf_hdr_t *sfhp);
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extern int xfs_dir2_sf_addname(struct xfs_da_args *args);
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extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino);
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extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, void *dirent,
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xfs_off_t *offset, filldir_t filldir);
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extern int xfs_dir2_sf_lookup(struct xfs_da_args *args);
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extern int xfs_dir2_sf_removename(struct xfs_da_args *args);
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extern int xfs_dir2_sf_replace(struct xfs_da_args *args);
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#endif /* __XFS_DIR2_PRIV_H__ */
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