#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
-#include "xfs_dir2.h"
-#include "xfs_dmapi.h"
#include "xfs_mount.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_trans_space.h"
#include "xfs_rtalloc.h"
#include "xfs_rw.h"
+#include "xfs_filestream.h"
+#include "xfs_trace.h"
/*
* File system operations
xfs_fsop_geom_t *geo,
int new_version)
{
+
+ memset(geo, 0, sizeof(*geo));
+
geo->blocksize = mp->m_sb.sb_blocksize;
geo->rtextsize = mp->m_sb.sb_rextsize;
geo->agblocks = mp->m_sb.sb_agblocks;
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);
- 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),
- XFS_FSS_TO_BB(mp, 1), 0, &bp);
- if (error)
+ if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb)))
return error;
- ASSERT(bp);
+ dpct = pct - mp->m_sb.sb_imax_pct;
+ bp = xfs_buf_read_uncached(mp, mp->m_ddev_targp,
+ XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1),
+ BBTOB(XFS_FSS_TO_BB(mp, 1)), 0);
+ if (!bp)
+ return EIO;
xfs_buf_relse(bp);
new = nb; /* use new as a temporary here */
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(XFS_MTOVFS(mp), 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);
agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC);
* 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);
agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
* 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);
block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC);
block->bb_level = 0;
block->bb_numrecs = cpu_to_be16(1);
- block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
- block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
- arec = XFS_BTREE_REC_ADDR(xfs_alloc, block, 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));
* 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);
block->bb_magic = cpu_to_be32(XFS_ABTC_MAGIC);
block->bb_level = 0;
block->bb_numrecs = cpu_to_be16(1);
- block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
- block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
- arec = XFS_BTREE_REC_ADDR(xfs_alloc, block, 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));
* 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);
block->bb_magic = cpu_to_be32(XFS_IBT_MAGIC);
block->bb_level = 0;
block->bb_numrecs = 0;
- block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
- block->bb_rightsib = cpu_to_be32(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);
- be32_add(&agi->agi_length, new);
+ be32_add_cpu(&agi->agi_length, new);
ASSERT(nagcount == oagcount ||
be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks);
xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH);
}
ASSERT(bp);
agf = XFS_BUF_TO_AGF(bp);
- be32_add(&agf->agf_length, new);
+ 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.
*/
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)
if (dpct)
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
error = xfs_trans_commit(tp, 0);
- if (error) {
+ 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;
+ xfs_set_low_space_thresholds(mp);
+
+ /* 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)),
XFS_FSS_TO_BB(mp, 1), 0, &bp);
if (error) {
- xfs_fs_cmn_err(CE_WARN, mp,
- "error %d reading secondary superblock for ag %d",
+ xfs_warn(mp,
+ "error %d reading secondary superblock for ag %d",
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
if (!(error = xfs_bwrite(mp, bp))) {
continue;
} else {
- xfs_fs_cmn_err(CE_WARN, mp,
+ xfs_warn(mp,
"write error %d updating secondary superblock for ag %d",
error, agno);
break; /* no point in continuing */
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;
-
- xfs_icsb_sync_counters_flags(mp, XFS_ICSB_LAZY_COUNT);
- s = XFS_SB_LOCK(mp);
+ 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;
}
{
__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;
* 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 XFS_SB_LOCK so that if we are near
+ * 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
* enabled, disabled or even compiled in....
*/
retry:
- s = XFS_SB_LOCK(mp);
- xfs_icsb_sync_counters_flags(mp, XFS_ICSB_SB_LOCKED);
+ spin_lock(&mp->m_sb_lock);
+ xfs_icsb_sync_counters_locked(mp, 0);
/*
* If our previous reservation was larger than the current value,
mp->m_resblks += free;
mp->m_resblks_avail += free;
fdblks_delta = -free;
- mp->m_sb.sb_fdblocks = XFS_ALLOC_SET_ASIDE(mp);
} else {
fdblks_delta = -delta;
- mp->m_sb.sb_fdblocks =
- lcounter + XFS_ALLOC_SET_ASIDE(mp);
mp->m_resblks = request;
mp->m_resblks_avail += delta;
}
}
out:
- outval->resblks = mp->m_resblks;
- outval->resblks_avail = mp->m_resblks_avail;
- XFS_SB_UNLOCK(mp, s);
+ 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 it's max so this will put it in the free pool.
+ * 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
* the extra reserve blocks from the reserve.....
*/
int error;
- error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, fdblks_delta, 0);
+ error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS,
+ fdblks_delta, 0);
if (error == ENOSPC)
goto retry;
}
-
return 0;
}
-void
+/*
+ * Dump a transaction into the log that contains no real change. This is needed
+ * to be able to make the log dirty or stamp the current tail LSN into the log
+ * during the covering operation.
+ *
+ * We cannot use an inode here for this - that will push dirty state back up
+ * into the VFS and then periodic inode flushing will prevent log covering from
+ * making progress. Hence we log a field in the superblock instead and use a
+ * synchronous transaction to ensure the superblock is immediately unpinned
+ * and can be written back.
+ */
+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);
- if (xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0)) {
+ tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP);
+ error = xfs_trans_reserve(tp, 0, mp->m_sb.sb_sectsize + 128, 0, 0,
+ XFS_DEFAULT_LOG_COUNT);
+ if (error) {
xfs_trans_cancel(tp, 0);
- return;
+ 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);
+ /* log the UUID because it is an unchanging field */
+ xfs_mod_sb(tp, XFS_SB_UUID);
xfs_trans_set_sync(tp);
- xfs_trans_commit(tp, 0);
-
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ return xfs_trans_commit(tp, 0);
}
int
{
switch (inflags) {
case XFS_FSOP_GOING_FLAGS_DEFAULT: {
- struct bhv_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 && !IS_ERR(sb)) {
xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT);
thaw_bdev(sb->s_bdev, sb);
}
-
+
break;
}
case XFS_FSOP_GOING_FLAGS_LOGFLUSH:
Code Review / linux-2.6.git / blobdiff