/*
- * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * 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.
+ * 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.
*
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * 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_macros.h"
+#include "xfs_fs.h"
#include "xfs_types.h"
+#include "xfs_bit.h"
#include "xfs_inum.h"
#include "xfs_log.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
-#include "xfs_dir.h"
+#include "xfs_ag.h"
+#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
-#include "xfs_ag.h"
-#include "xfs_alloc_btree.h"
#include "xfs_bmap_btree.h"
+#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
+#include "xfs_dir2_sf.h"
+#include "xfs_attr_sf.h"
+#include "xfs_dinode.h"
+#include "xfs_inode.h"
+#include "xfs_inode_item.h"
#include "xfs_btree.h"
#include "xfs_error.h"
#include "xfs_alloc.h"
#include "xfs_ialloc.h"
#include "xfs_fsops.h"
#include "xfs_itable.h"
-#include "xfs_rw.h"
-#include "xfs_refcache.h"
#include "xfs_trans_space.h"
#include "xfs_rtalloc.h"
-#include "xfs_dir2.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_inode_item.h"
+#include "xfs_rw.h"
+#include "xfs_filestream.h"
+#include "xfs_trace.h"
/*
* File system operations
if (new_version >= 3) {
geo->version = XFS_FSOP_GEOM_VERSION;
geo->flags =
- (XFS_SB_VERSION_HASATTR(&mp->m_sb) ?
+ (xfs_sb_version_hasattr(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_ATTR : 0) |
- (XFS_SB_VERSION_HASNLINK(&mp->m_sb) ?
+ (xfs_sb_version_hasnlink(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_NLINK : 0) |
- (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) ?
+ (xfs_sb_version_hasquota(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_QUOTA : 0) |
- (XFS_SB_VERSION_HASALIGN(&mp->m_sb) ?
+ (xfs_sb_version_hasalign(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_IALIGN : 0) |
- (XFS_SB_VERSION_HASDALIGN(&mp->m_sb) ?
+ (xfs_sb_version_hasdalign(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_DALIGN : 0) |
- (XFS_SB_VERSION_HASSHARED(&mp->m_sb) ?
+ (xfs_sb_version_hasshared(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_SHARED : 0) |
- (XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) ?
+ (xfs_sb_version_hasextflgbit(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) |
- (XFS_SB_VERSION_HASDIRV2(&mp->m_sb) ?
+ (xfs_sb_version_hasdirv2(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) |
- (XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
+ (xfs_sb_version_hassector(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_SECTOR : 0) |
- (XFS_SB_VERSION_HASATTR2(&mp->m_sb) ?
+ (xfs_sb_version_hasasciici(&mp->m_sb) ?
+ XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) |
+ (xfs_sb_version_haslazysbcount(&mp->m_sb) ?
+ XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) |
+ (xfs_sb_version_hasattr2(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_ATTR2 : 0);
- geo->logsectsize = XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
+ geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ?
mp->m_sb.sb_logsectsize : BBSIZE;
geo->rtsectsize = mp->m_sb.sb_blocksize;
geo->dirblocksize = mp->m_dirblksize;
}
if (new_version >= 4) {
geo->flags |=
- (XFS_SB_VERSION_HASLOGV2(&mp->m_sb) ?
+ (xfs_sb_version_haslogv2(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_LOGV2 : 0);
geo->logsunit = mp->m_sb.sb_logsunit;
}
xfs_extlen_t agsize;
xfs_extlen_t tmpsize;
xfs_alloc_rec_t *arec;
- xfs_btree_sblock_t *block;
+ struct xfs_btree_block *block;
xfs_buf_t *bp;
int bucket;
int dpct;
xfs_rfsblock_t nfree;
xfs_agnumber_t oagcount;
int pct;
- xfs_sb_t *sbp;
xfs_trans_t *tp;
nb = in->newblocks;
pct = in->imaxpct;
if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100)
return XFS_ERROR(EINVAL);
+ if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb)))
+ return error;
dpct = pct - mp->m_sb.sb_imax_pct;
error = xfs_read_buf(mp, mp->m_ddev_targp,
XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1),
nagcount = new + (nb_mod != 0);
if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) {
nagcount--;
- nb = nagcount * mp->m_sb.sb_agblocks;
+ nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks;
if (nb < mp->m_sb.sb_dblocks)
return XFS_ERROR(EINVAL);
}
new = nb - mp->m_sb.sb_dblocks;
oagcount = mp->m_sb.sb_agcount;
+
+ /* allocate the new per-ag structures */
if (nagcount > oagcount) {
- down_write(&mp->m_peraglock);
- mp->m_perag = kmem_realloc(mp->m_perag,
- sizeof(xfs_perag_t) * nagcount,
- sizeof(xfs_perag_t) * oagcount,
- KM_SLEEP);
- memset(&mp->m_perag[oagcount], 0,
- (nagcount - oagcount) * sizeof(xfs_perag_t));
- mp->m_flags |= XFS_MOUNT_32BITINODES;
- nagimax = xfs_initialize_perag(mp, nagcount);
- up_write(&mp->m_peraglock);
+ error = xfs_initialize_perag(mp, nagcount, &nagimax);
+ if (error)
+ return error;
}
+
tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS);
+ tp->t_flags |= XFS_TRANS_RESERVE;
if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp),
XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) {
xfs_trans_cancel(tp, 0);
return error;
}
+ /*
+ * Write new AG headers to disk. Non-transactional, but written
+ * synchronously so they are completed prior to the growfs transaction
+ * being logged.
+ */
nfree = 0;
for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
/*
* AG freelist header block
*/
bp = xfs_buf_get(mp->m_ddev_targp,
- XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
- XFS_FSS_TO_BB(mp, 1), 0);
+ XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
+ XFS_FSS_TO_BB(mp, 1), XBF_LOCK | XBF_MAPPED);
agf = XFS_BUF_TO_AGF(bp);
memset(agf, 0, mp->m_sb.sb_sectsize);
- INT_SET(agf->agf_magicnum, ARCH_CONVERT, XFS_AGF_MAGIC);
- INT_SET(agf->agf_versionnum, ARCH_CONVERT, XFS_AGF_VERSION);
- INT_SET(agf->agf_seqno, ARCH_CONVERT, agno);
+ agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
+ agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION);
+ agf->agf_seqno = cpu_to_be32(agno);
if (agno == nagcount - 1)
agsize =
nb -
(agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks);
else
agsize = mp->m_sb.sb_agblocks;
- INT_SET(agf->agf_length, ARCH_CONVERT, agsize);
- INT_SET(agf->agf_roots[XFS_BTNUM_BNOi], ARCH_CONVERT,
- XFS_BNO_BLOCK(mp));
- INT_SET(agf->agf_roots[XFS_BTNUM_CNTi], ARCH_CONVERT,
- XFS_CNT_BLOCK(mp));
- INT_SET(agf->agf_levels[XFS_BTNUM_BNOi], ARCH_CONVERT, 1);
- INT_SET(agf->agf_levels[XFS_BTNUM_CNTi], ARCH_CONVERT, 1);
+ agf->agf_length = cpu_to_be32(agsize);
+ agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp));
+ agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp));
+ agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1);
+ agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1);
agf->agf_flfirst = 0;
- INT_SET(agf->agf_fllast, ARCH_CONVERT, XFS_AGFL_SIZE(mp) - 1);
+ agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1);
agf->agf_flcount = 0;
tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp);
- INT_SET(agf->agf_freeblks, ARCH_CONVERT, tmpsize);
- INT_SET(agf->agf_longest, ARCH_CONVERT, tmpsize);
+ agf->agf_freeblks = cpu_to_be32(tmpsize);
+ agf->agf_longest = cpu_to_be32(tmpsize);
error = xfs_bwrite(mp, bp);
if (error) {
goto error0;
* AG inode header block
*/
bp = xfs_buf_get(mp->m_ddev_targp,
- XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
- XFS_FSS_TO_BB(mp, 1), 0);
+ XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
+ XFS_FSS_TO_BB(mp, 1), XBF_LOCK | XBF_MAPPED);
agi = XFS_BUF_TO_AGI(bp);
memset(agi, 0, mp->m_sb.sb_sectsize);
- INT_SET(agi->agi_magicnum, ARCH_CONVERT, XFS_AGI_MAGIC);
- INT_SET(agi->agi_versionnum, ARCH_CONVERT, XFS_AGI_VERSION);
- INT_SET(agi->agi_seqno, ARCH_CONVERT, agno);
- INT_SET(agi->agi_length, ARCH_CONVERT, agsize);
+ agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
+ agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
+ agi->agi_seqno = cpu_to_be32(agno);
+ agi->agi_length = cpu_to_be32(agsize);
agi->agi_count = 0;
- INT_SET(agi->agi_root, ARCH_CONVERT, XFS_IBT_BLOCK(mp));
- INT_SET(agi->agi_level, ARCH_CONVERT, 1);
+ agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp));
+ agi->agi_level = cpu_to_be32(1);
agi->agi_freecount = 0;
- INT_SET(agi->agi_newino, ARCH_CONVERT, NULLAGINO);
- INT_SET(agi->agi_dirino, ARCH_CONVERT, NULLAGINO);
+ agi->agi_newino = cpu_to_be32(NULLAGINO);
+ agi->agi_dirino = cpu_to_be32(NULLAGINO);
for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++)
- INT_SET(agi->agi_unlinked[bucket], ARCH_CONVERT,
- NULLAGINO);
+ agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO);
error = xfs_bwrite(mp, bp);
if (error) {
goto error0;
* BNO btree root block
*/
bp = xfs_buf_get(mp->m_ddev_targp,
- XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)),
- BTOBB(mp->m_sb.sb_blocksize), 0);
- block = XFS_BUF_TO_SBLOCK(bp);
+ XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)),
+ BTOBB(mp->m_sb.sb_blocksize),
+ XBF_LOCK | XBF_MAPPED);
+ block = XFS_BUF_TO_BLOCK(bp);
memset(block, 0, mp->m_sb.sb_blocksize);
- INT_SET(block->bb_magic, ARCH_CONVERT, XFS_ABTB_MAGIC);
+ block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC);
block->bb_level = 0;
- INT_SET(block->bb_numrecs, ARCH_CONVERT, 1);
- INT_SET(block->bb_leftsib, ARCH_CONVERT, NULLAGBLOCK);
- INT_SET(block->bb_rightsib, ARCH_CONVERT, NULLAGBLOCK);
- arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
- block, 1, mp->m_alloc_mxr[0]);
- INT_SET(arec->ar_startblock, ARCH_CONVERT,
- XFS_PREALLOC_BLOCKS(mp));
- INT_SET(arec->ar_blockcount, ARCH_CONVERT,
- agsize - INT_GET(arec->ar_startblock, ARCH_CONVERT));
+ block->bb_numrecs = cpu_to_be16(1);
+ block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
+ block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
+ arec = XFS_ALLOC_REC_ADDR(mp, block, 1);
+ arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
+ arec->ar_blockcount = cpu_to_be32(
+ agsize - be32_to_cpu(arec->ar_startblock));
error = xfs_bwrite(mp, bp);
if (error) {
goto error0;
* CNT btree root block
*/
bp = xfs_buf_get(mp->m_ddev_targp,
- XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)),
- BTOBB(mp->m_sb.sb_blocksize), 0);
- block = XFS_BUF_TO_SBLOCK(bp);
+ XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)),
+ BTOBB(mp->m_sb.sb_blocksize),
+ XBF_LOCK | XBF_MAPPED);
+ block = XFS_BUF_TO_BLOCK(bp);
memset(block, 0, mp->m_sb.sb_blocksize);
- INT_SET(block->bb_magic, ARCH_CONVERT, XFS_ABTC_MAGIC);
+ block->bb_magic = cpu_to_be32(XFS_ABTC_MAGIC);
block->bb_level = 0;
- INT_SET(block->bb_numrecs, ARCH_CONVERT, 1);
- INT_SET(block->bb_leftsib, ARCH_CONVERT, NULLAGBLOCK);
- INT_SET(block->bb_rightsib, ARCH_CONVERT, NULLAGBLOCK);
- arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc,
- block, 1, mp->m_alloc_mxr[0]);
- INT_SET(arec->ar_startblock, ARCH_CONVERT,
- XFS_PREALLOC_BLOCKS(mp));
- INT_SET(arec->ar_blockcount, ARCH_CONVERT,
- agsize - INT_GET(arec->ar_startblock, ARCH_CONVERT));
- nfree += INT_GET(arec->ar_blockcount, ARCH_CONVERT);
+ block->bb_numrecs = cpu_to_be16(1);
+ block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
+ block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
+ arec = XFS_ALLOC_REC_ADDR(mp, block, 1);
+ arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
+ arec->ar_blockcount = cpu_to_be32(
+ agsize - be32_to_cpu(arec->ar_startblock));
+ nfree += be32_to_cpu(arec->ar_blockcount);
error = xfs_bwrite(mp, bp);
if (error) {
goto error0;
* INO btree root block
*/
bp = xfs_buf_get(mp->m_ddev_targp,
- XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)),
- BTOBB(mp->m_sb.sb_blocksize), 0);
- block = XFS_BUF_TO_SBLOCK(bp);
+ XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)),
+ BTOBB(mp->m_sb.sb_blocksize),
+ XBF_LOCK | XBF_MAPPED);
+ block = XFS_BUF_TO_BLOCK(bp);
memset(block, 0, mp->m_sb.sb_blocksize);
- INT_SET(block->bb_magic, ARCH_CONVERT, XFS_IBT_MAGIC);
+ block->bb_magic = cpu_to_be32(XFS_IBT_MAGIC);
block->bb_level = 0;
block->bb_numrecs = 0;
- INT_SET(block->bb_leftsib, ARCH_CONVERT, NULLAGBLOCK);
- INT_SET(block->bb_rightsib, ARCH_CONVERT, NULLAGBLOCK);
+ block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
+ block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
error = xfs_bwrite(mp, bp);
if (error) {
goto error0;
}
ASSERT(bp);
agi = XFS_BUF_TO_AGI(bp);
- INT_MOD(agi->agi_length, ARCH_CONVERT, new);
+ be32_add_cpu(&agi->agi_length, new);
ASSERT(nagcount == oagcount ||
- INT_GET(agi->agi_length, ARCH_CONVERT) ==
- mp->m_sb.sb_agblocks);
+ be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks);
xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH);
/*
* Change agf length.
}
ASSERT(bp);
agf = XFS_BUF_TO_AGF(bp);
- INT_MOD(agf->agf_length, ARCH_CONVERT, new);
- ASSERT(INT_GET(agf->agf_length, ARCH_CONVERT) ==
- INT_GET(agi->agi_length, ARCH_CONVERT));
+ be32_add_cpu(&agf->agf_length, new);
+ ASSERT(be32_to_cpu(agf->agf_length) ==
+ be32_to_cpu(agi->agi_length));
+
+ xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH);
/*
* Free the new space.
*/
error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno,
- INT_GET(agf->agf_length, ARCH_CONVERT) - new), new);
+ be32_to_cpu(agf->agf_length) - new), new);
if (error) {
goto error0;
}
}
+
+ /*
+ * Update changed superblock fields transactionally. These are not
+ * seen by the rest of the world until the transaction commit applies
+ * them atomically to the superblock.
+ */
if (nagcount > oagcount)
xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount);
if (nb > mp->m_sb.sb_dblocks)
xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree);
if (dpct)
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
- error = xfs_trans_commit(tp, 0, NULL);
- if (error) {
+ error = xfs_trans_commit(tp, 0);
+ if (error)
return error;
- }
+
/* New allocation groups fully initialized, so update mount struct */
if (nagimax)
mp->m_maxagi = nagimax;
mp->m_maxicount = icount << mp->m_sb.sb_inopblog;
} else
mp->m_maxicount = 0;
+
+ /* update secondary superblocks. */
for (agno = 1; agno < nagcount; agno++) {
error = xfs_read_buf(mp, mp->m_ddev_targp,
XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
error, agno);
break;
}
- sbp = XFS_BUF_TO_SBP(bp);
- xfs_xlatesb(sbp, &mp->m_sb, -1, XFS_SB_ALL_BITS);
+ xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS);
/*
* If we get an error writing out the alternate superblocks,
* just issue a warning and continue. The real work is
xfs_growfs_data_t *in)
{
int error;
- if (!cpsema(&mp->m_growlock))
+
+ if (!capable(CAP_SYS_ADMIN))
+ return XFS_ERROR(EPERM);
+ if (!mutex_trylock(&mp->m_growlock))
return XFS_ERROR(EWOULDBLOCK);
error = xfs_growfs_data_private(mp, in);
- vsema(&mp->m_growlock);
+ mutex_unlock(&mp->m_growlock);
return error;
}
xfs_growfs_log_t *in)
{
int error;
- if (!cpsema(&mp->m_growlock))
+
+ if (!capable(CAP_SYS_ADMIN))
+ return XFS_ERROR(EPERM);
+ if (!mutex_trylock(&mp->m_growlock))
return XFS_ERROR(EWOULDBLOCK);
error = xfs_growfs_log_private(mp, in);
- vsema(&mp->m_growlock);
+ mutex_unlock(&mp->m_growlock);
return error;
}
xfs_mount_t *mp,
xfs_fsop_counts_t *cnt)
{
- unsigned long s;
-
- s = XFS_SB_LOCK(mp);
- cnt->freedata = mp->m_sb.sb_fdblocks;
+ xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT);
+ spin_lock(&mp->m_sb_lock);
+ cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
cnt->freertx = mp->m_sb.sb_frextents;
cnt->freeino = mp->m_sb.sb_ifree;
cnt->allocino = mp->m_sb.sb_icount;
- XFS_SB_UNLOCK(mp, s);
+ spin_unlock(&mp->m_sb_lock);
return 0;
}
*
* xfs_reserve_blocks is called to set m_resblks
* in the in-core mount table. The number of unused reserved blocks
- * is kept in m_resbls_avail.
+ * is kept in m_resblks_avail.
*
* Reserve the requested number of blocks if available. Otherwise return
* as many as possible to satisfy the request. The actual number
__uint64_t *inval,
xfs_fsop_resblks_t *outval)
{
- __int64_t lcounter, delta;
+ __int64_t lcounter, delta, fdblks_delta;
__uint64_t request;
- unsigned long s;
/* If inval is null, report current values and return */
-
if (inval == (__uint64_t *)NULL) {
+ if (!outval)
+ return EINVAL;
outval->resblks = mp->m_resblks;
outval->resblks_avail = mp->m_resblks_avail;
- return(0);
+ return 0;
}
request = *inval;
- s = XFS_SB_LOCK(mp);
+
+ /*
+ * With per-cpu counters, this becomes an interesting
+ * problem. we needto work out if we are freeing or allocation
+ * blocks first, then we can do the modification as necessary.
+ *
+ * We do this under the m_sb_lock so that if we are near
+ * ENOSPC, we will hold out any changes while we work out
+ * what to do. This means that the amount of free space can
+ * change while we do this, so we need to retry if we end up
+ * trying to reserve more space than is available.
+ *
+ * We also use the xfs_mod_incore_sb() interface so that we
+ * don't have to care about whether per cpu counter are
+ * enabled, disabled or even compiled in....
+ */
+retry:
+ spin_lock(&mp->m_sb_lock);
+ xfs_icsb_sync_counters_locked(mp, 0);
/*
* If our previous reservation was larger than the current value,
* then move any unused blocks back to the free pool.
*/
-
+ fdblks_delta = 0;
if (mp->m_resblks > request) {
lcounter = mp->m_resblks_avail - request;
if (lcounter > 0) { /* release unused blocks */
- mp->m_sb.sb_fdblocks += lcounter;
+ fdblks_delta = lcounter;
mp->m_resblks_avail -= lcounter;
}
mp->m_resblks = request;
} else {
+ __int64_t free;
+
+ free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp);
+ if (!free)
+ goto out; /* ENOSPC and fdblks_delta = 0 */
+
delta = request - mp->m_resblks;
- lcounter = mp->m_sb.sb_fdblocks - delta;
+ lcounter = free - delta;
if (lcounter < 0) {
/* We can't satisfy the request, just get what we can */
- mp->m_resblks += mp->m_sb.sb_fdblocks;
- mp->m_resblks_avail += mp->m_sb.sb_fdblocks;
- mp->m_sb.sb_fdblocks = 0;
+ mp->m_resblks += free;
+ mp->m_resblks_avail += free;
+ fdblks_delta = -free;
} else {
- mp->m_sb.sb_fdblocks = lcounter;
+ fdblks_delta = -delta;
mp->m_resblks = request;
mp->m_resblks_avail += delta;
}
}
+out:
+ if (outval) {
+ outval->resblks = mp->m_resblks;
+ outval->resblks_avail = mp->m_resblks_avail;
+ }
+ spin_unlock(&mp->m_sb_lock);
+
+ if (fdblks_delta) {
+ /*
+ * If we are putting blocks back here, m_resblks_avail is
+ * already at its max so this will put it in the free pool.
+ *
+ * If we need space, we'll either succeed in getting it
+ * from the free block count or we'll get an enospc. If
+ * we get a ENOSPC, it means things changed while we were
+ * calculating fdblks_delta and so we should try again to
+ * see if there is anything left to reserve.
+ *
+ * Don't set the reserved flag here - we don't want to reserve
+ * the extra reserve blocks from the reserve.....
+ */
+ int error;
+ error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, fdblks_delta, 0);
+ if (error == ENOSPC)
+ goto retry;
+ }
+ return 0;
+}
- outval->resblks = mp->m_resblks;
- outval->resblks_avail = mp->m_resblks_avail;
- XFS_SB_UNLOCK(mp, s);
- return(0);
+int
+xfs_fs_log_dummy(
+ xfs_mount_t *mp)
+{
+ xfs_trans_t *tp;
+ xfs_inode_t *ip;
+ int error;
+
+ tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP);
+ error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ return error;
+ }
+
+ ip = mp->m_rootip;
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(tp, ip);
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+ xfs_trans_set_sync(tp);
+ error = xfs_trans_commit(tp, 0);
+
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ return error;
}
int
{
switch (inflags) {
case XFS_FSOP_GOING_FLAGS_DEFAULT: {
- struct vfs *vfsp = XFS_MTOVFS(mp);
- struct super_block *sb = freeze_bdev(vfsp->vfs_super->s_bdev);
+ struct super_block *sb = freeze_bdev(mp->m_super->s_bdev);
- if (sb) {
- xfs_force_shutdown(mp, XFS_FORCE_UMOUNT);
+ if (sb && !IS_ERR(sb)) {
+ xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
thaw_bdev(sb->s_bdev, sb);
}
-
+
break;
}
case XFS_FSOP_GOING_FLAGS_LOGFLUSH:
- xfs_force_shutdown(mp, XFS_FORCE_UMOUNT);
+ xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
break;
case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH:
- xfs_force_shutdown(mp, XFS_FORCE_UMOUNT|XFS_LOG_IO_ERROR);
+ xfs_force_shutdown(mp,
+ SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR);
break;
default:
return XFS_ERROR(EINVAL);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff