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authorDave Chinner <dchinner@redhat.com>2014-06-25 06:57:53 +0200
committerDave Chinner <david@fromorbit.com>2014-06-25 06:57:53 +0200
commit30f712c9dd69348aa51351d5cb6d366bf4fae31d (patch)
tree9b246ca3986b784d8f9f6841466dfd4c90909e47 /fs/xfs/xfs_ialloc_btree.c
parentlibxfs: move header files (diff)
downloadlinux-30f712c9dd69348aa51351d5cb6d366bf4fae31d.tar.xz
linux-30f712c9dd69348aa51351d5cb6d366bf4fae31d.zip
libxfs: move source files
Move all the source files that are shared with userspace into libxfs/. This is done as one big chunk simpy to get it done quickly Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_ialloc_btree.c')
-rw-r--r--fs/xfs/xfs_ialloc_btree.c422
1 files changed, 0 insertions, 422 deletions
diff --git a/fs/xfs/xfs_ialloc_btree.c b/fs/xfs/xfs_ialloc_btree.c
deleted file mode 100644
index 726f83a681a5..000000000000
--- a/fs/xfs/xfs_ialloc_btree.c
+++ /dev/null
@@ -1,422 +0,0 @@
-/*
- * Copyright (c) 2000-2001,2005 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
- */
-#include "xfs.h"
-#include "xfs_fs.h"
-#include "xfs_shared.h"
-#include "xfs_format.h"
-#include "xfs_log_format.h"
-#include "xfs_trans_resv.h"
-#include "xfs_bit.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_mount.h"
-#include "xfs_inode.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_alloc.h"
-#include "xfs_error.h"
-#include "xfs_trace.h"
-#include "xfs_cksum.h"
-#include "xfs_trans.h"
-
-
-STATIC int
-xfs_inobt_get_minrecs(
- struct xfs_btree_cur *cur,
- int level)
-{
- return cur->bc_mp->m_inobt_mnr[level != 0];
-}
-
-STATIC struct xfs_btree_cur *
-xfs_inobt_dup_cursor(
- struct xfs_btree_cur *cur)
-{
- return xfs_inobt_init_cursor(cur->bc_mp, cur->bc_tp,
- cur->bc_private.a.agbp, cur->bc_private.a.agno,
- cur->bc_btnum);
-}
-
-STATIC void
-xfs_inobt_set_root(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *nptr,
- int inc) /* level change */
-{
- struct xfs_buf *agbp = cur->bc_private.a.agbp;
- struct xfs_agi *agi = XFS_BUF_TO_AGI(agbp);
-
- agi->agi_root = nptr->s;
- be32_add_cpu(&agi->agi_level, inc);
- xfs_ialloc_log_agi(cur->bc_tp, agbp, XFS_AGI_ROOT | XFS_AGI_LEVEL);
-}
-
-STATIC void
-xfs_finobt_set_root(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *nptr,
- int inc) /* level change */
-{
- struct xfs_buf *agbp = cur->bc_private.a.agbp;
- struct xfs_agi *agi = XFS_BUF_TO_AGI(agbp);
-
- agi->agi_free_root = nptr->s;
- be32_add_cpu(&agi->agi_free_level, inc);
- xfs_ialloc_log_agi(cur->bc_tp, agbp,
- XFS_AGI_FREE_ROOT | XFS_AGI_FREE_LEVEL);
-}
-
-STATIC int
-xfs_inobt_alloc_block(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *start,
- union xfs_btree_ptr *new,
- int *stat)
-{
- xfs_alloc_arg_t args; /* block allocation args */
- int error; /* error return value */
- xfs_agblock_t sbno = be32_to_cpu(start->s);
-
- XFS_BTREE_TRACE_CURSOR(cur, XBT_ENTRY);
-
- memset(&args, 0, sizeof(args));
- args.tp = cur->bc_tp;
- args.mp = cur->bc_mp;
- args.fsbno = XFS_AGB_TO_FSB(args.mp, cur->bc_private.a.agno, sbno);
- args.minlen = 1;
- args.maxlen = 1;
- args.prod = 1;
- args.type = XFS_ALLOCTYPE_NEAR_BNO;
-
- error = xfs_alloc_vextent(&args);
- if (error) {
- XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR);
- return error;
- }
- if (args.fsbno == NULLFSBLOCK) {
- XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
- *stat = 0;
- return 0;
- }
- ASSERT(args.len == 1);
- XFS_BTREE_TRACE_CURSOR(cur, XBT_EXIT);
-
- new->s = cpu_to_be32(XFS_FSB_TO_AGBNO(args.mp, args.fsbno));
- *stat = 1;
- return 0;
-}
-
-STATIC int
-xfs_inobt_free_block(
- struct xfs_btree_cur *cur,
- struct xfs_buf *bp)
-{
- xfs_fsblock_t fsbno;
- int error;
-
- fsbno = XFS_DADDR_TO_FSB(cur->bc_mp, XFS_BUF_ADDR(bp));
- error = xfs_free_extent(cur->bc_tp, fsbno, 1);
- if (error)
- return error;
-
- xfs_trans_binval(cur->bc_tp, bp);
- return error;
-}
-
-STATIC int
-xfs_inobt_get_maxrecs(
- struct xfs_btree_cur *cur,
- int level)
-{
- return cur->bc_mp->m_inobt_mxr[level != 0];
-}
-
-STATIC void
-xfs_inobt_init_key_from_rec(
- union xfs_btree_key *key,
- union xfs_btree_rec *rec)
-{
- key->inobt.ir_startino = rec->inobt.ir_startino;
-}
-
-STATIC void
-xfs_inobt_init_rec_from_key(
- union xfs_btree_key *key,
- union xfs_btree_rec *rec)
-{
- rec->inobt.ir_startino = key->inobt.ir_startino;
-}
-
-STATIC void
-xfs_inobt_init_rec_from_cur(
- struct xfs_btree_cur *cur,
- union xfs_btree_rec *rec)
-{
- rec->inobt.ir_startino = cpu_to_be32(cur->bc_rec.i.ir_startino);
- rec->inobt.ir_freecount = cpu_to_be32(cur->bc_rec.i.ir_freecount);
- rec->inobt.ir_free = cpu_to_be64(cur->bc_rec.i.ir_free);
-}
-
-/*
- * initial value of ptr for lookup
- */
-STATIC void
-xfs_inobt_init_ptr_from_cur(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *ptr)
-{
- struct xfs_agi *agi = XFS_BUF_TO_AGI(cur->bc_private.a.agbp);
-
- ASSERT(cur->bc_private.a.agno == be32_to_cpu(agi->agi_seqno));
-
- ptr->s = agi->agi_root;
-}
-
-STATIC void
-xfs_finobt_init_ptr_from_cur(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *ptr)
-{
- struct xfs_agi *agi = XFS_BUF_TO_AGI(cur->bc_private.a.agbp);
-
- ASSERT(cur->bc_private.a.agno == be32_to_cpu(agi->agi_seqno));
- ptr->s = agi->agi_free_root;
-}
-
-STATIC __int64_t
-xfs_inobt_key_diff(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *key)
-{
- return (__int64_t)be32_to_cpu(key->inobt.ir_startino) -
- cur->bc_rec.i.ir_startino;
-}
-
-static int
-xfs_inobt_verify(
- struct xfs_buf *bp)
-{
- struct xfs_mount *mp = bp->b_target->bt_mount;
- struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
- struct xfs_perag *pag = bp->b_pag;
- unsigned int level;
-
- /*
- * During growfs operations, we can't verify the exact owner as the
- * perag is not fully initialised and hence not attached to the buffer.
- *
- * Similarly, during log recovery we will have a perag structure
- * attached, but the agi information will not yet have been initialised
- * from the on disk AGI. We don't currently use any of this information,
- * but beware of the landmine (i.e. need to check pag->pagi_init) if we
- * ever do.
- */
- switch (block->bb_magic) {
- case cpu_to_be32(XFS_IBT_CRC_MAGIC):
- case cpu_to_be32(XFS_FIBT_CRC_MAGIC):
- if (!xfs_sb_version_hascrc(&mp->m_sb))
- return false;
- if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid))
- return false;
- if (block->bb_u.s.bb_blkno != cpu_to_be64(bp->b_bn))
- return false;
- if (pag &&
- be32_to_cpu(block->bb_u.s.bb_owner) != pag->pag_agno)
- return false;
- /* fall through */
- case cpu_to_be32(XFS_IBT_MAGIC):
- case cpu_to_be32(XFS_FIBT_MAGIC):
- break;
- default:
- return 0;
- }
-
- /* numrecs and level verification */
- level = be16_to_cpu(block->bb_level);
- if (level >= mp->m_in_maxlevels)
- return false;
- if (be16_to_cpu(block->bb_numrecs) > mp->m_inobt_mxr[level != 0])
- return false;
-
- /* sibling pointer verification */
- if (!block->bb_u.s.bb_leftsib ||
- (be32_to_cpu(block->bb_u.s.bb_leftsib) >= mp->m_sb.sb_agblocks &&
- block->bb_u.s.bb_leftsib != cpu_to_be32(NULLAGBLOCK)))
- return false;
- if (!block->bb_u.s.bb_rightsib ||
- (be32_to_cpu(block->bb_u.s.bb_rightsib) >= mp->m_sb.sb_agblocks &&
- block->bb_u.s.bb_rightsib != cpu_to_be32(NULLAGBLOCK)))
- return false;
-
- return true;
-}
-
-static void
-xfs_inobt_read_verify(
- struct xfs_buf *bp)
-{
- if (!xfs_btree_sblock_verify_crc(bp))
- xfs_buf_ioerror(bp, EFSBADCRC);
- else if (!xfs_inobt_verify(bp))
- xfs_buf_ioerror(bp, EFSCORRUPTED);
-
- if (bp->b_error) {
- trace_xfs_btree_corrupt(bp, _RET_IP_);
- xfs_verifier_error(bp);
- }
-}
-
-static void
-xfs_inobt_write_verify(
- struct xfs_buf *bp)
-{
- if (!xfs_inobt_verify(bp)) {
- trace_xfs_btree_corrupt(bp, _RET_IP_);
- xfs_buf_ioerror(bp, EFSCORRUPTED);
- xfs_verifier_error(bp);
- return;
- }
- xfs_btree_sblock_calc_crc(bp);
-
-}
-
-const struct xfs_buf_ops xfs_inobt_buf_ops = {
- .verify_read = xfs_inobt_read_verify,
- .verify_write = xfs_inobt_write_verify,
-};
-
-#if defined(DEBUG) || defined(XFS_WARN)
-STATIC int
-xfs_inobt_keys_inorder(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *k1,
- union xfs_btree_key *k2)
-{
- return be32_to_cpu(k1->inobt.ir_startino) <
- be32_to_cpu(k2->inobt.ir_startino);
-}
-
-STATIC int
-xfs_inobt_recs_inorder(
- struct xfs_btree_cur *cur,
- union xfs_btree_rec *r1,
- union xfs_btree_rec *r2)
-{
- return be32_to_cpu(r1->inobt.ir_startino) + XFS_INODES_PER_CHUNK <=
- be32_to_cpu(r2->inobt.ir_startino);
-}
-#endif /* DEBUG */
-
-static const struct xfs_btree_ops xfs_inobt_ops = {
- .rec_len = sizeof(xfs_inobt_rec_t),
- .key_len = sizeof(xfs_inobt_key_t),
-
- .dup_cursor = xfs_inobt_dup_cursor,
- .set_root = xfs_inobt_set_root,
- .alloc_block = xfs_inobt_alloc_block,
- .free_block = xfs_inobt_free_block,
- .get_minrecs = xfs_inobt_get_minrecs,
- .get_maxrecs = xfs_inobt_get_maxrecs,
- .init_key_from_rec = xfs_inobt_init_key_from_rec,
- .init_rec_from_key = xfs_inobt_init_rec_from_key,
- .init_rec_from_cur = xfs_inobt_init_rec_from_cur,
- .init_ptr_from_cur = xfs_inobt_init_ptr_from_cur,
- .key_diff = xfs_inobt_key_diff,
- .buf_ops = &xfs_inobt_buf_ops,
-#if defined(DEBUG) || defined(XFS_WARN)
- .keys_inorder = xfs_inobt_keys_inorder,
- .recs_inorder = xfs_inobt_recs_inorder,
-#endif
-};
-
-static const struct xfs_btree_ops xfs_finobt_ops = {
- .rec_len = sizeof(xfs_inobt_rec_t),
- .key_len = sizeof(xfs_inobt_key_t),
-
- .dup_cursor = xfs_inobt_dup_cursor,
- .set_root = xfs_finobt_set_root,
- .alloc_block = xfs_inobt_alloc_block,
- .free_block = xfs_inobt_free_block,
- .get_minrecs = xfs_inobt_get_minrecs,
- .get_maxrecs = xfs_inobt_get_maxrecs,
- .init_key_from_rec = xfs_inobt_init_key_from_rec,
- .init_rec_from_key = xfs_inobt_init_rec_from_key,
- .init_rec_from_cur = xfs_inobt_init_rec_from_cur,
- .init_ptr_from_cur = xfs_finobt_init_ptr_from_cur,
- .key_diff = xfs_inobt_key_diff,
- .buf_ops = &xfs_inobt_buf_ops,
-#if defined(DEBUG) || defined(XFS_WARN)
- .keys_inorder = xfs_inobt_keys_inorder,
- .recs_inorder = xfs_inobt_recs_inorder,
-#endif
-};
-
-/*
- * Allocate a new inode btree cursor.
- */
-struct xfs_btree_cur * /* new inode btree cursor */
-xfs_inobt_init_cursor(
- struct xfs_mount *mp, /* file system mount point */
- struct xfs_trans *tp, /* transaction pointer */
- struct xfs_buf *agbp, /* buffer for agi structure */
- xfs_agnumber_t agno, /* allocation group number */
- xfs_btnum_t btnum) /* ialloc or free ino btree */
-{
- struct xfs_agi *agi = XFS_BUF_TO_AGI(agbp);
- struct xfs_btree_cur *cur;
-
- cur = kmem_zone_zalloc(xfs_btree_cur_zone, KM_SLEEP);
-
- cur->bc_tp = tp;
- cur->bc_mp = mp;
- cur->bc_btnum = btnum;
- if (btnum == XFS_BTNUM_INO) {
- cur->bc_nlevels = be32_to_cpu(agi->agi_level);
- cur->bc_ops = &xfs_inobt_ops;
- } else {
- cur->bc_nlevels = be32_to_cpu(agi->agi_free_level);
- cur->bc_ops = &xfs_finobt_ops;
- }
-
- cur->bc_blocklog = mp->m_sb.sb_blocklog;
-
- if (xfs_sb_version_hascrc(&mp->m_sb))
- cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
-
- cur->bc_private.a.agbp = agbp;
- cur->bc_private.a.agno = agno;
-
- return cur;
-}
-
-/*
- * Calculate number of records in an inobt btree block.
- */
-int
-xfs_inobt_maxrecs(
- struct xfs_mount *mp,
- int blocklen,
- int leaf)
-{
- blocklen -= XFS_INOBT_BLOCK_LEN(mp);
-
- if (leaf)
- return blocklen / sizeof(xfs_inobt_rec_t);
- return blocklen / (sizeof(xfs_inobt_key_t) + sizeof(xfs_inobt_ptr_t));
-}