#include "xfs_rtalloc.h"
#include "xfs_rw.h"
#include "xfs_filestream.h"
+#include "xfs_trace.h"
/*
* File system operations
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;
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) {
- xfs_filestream_flush(mp);
- 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),
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;
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;
+
+ /* 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_growfs_data_t *in)
{
int error;
+
+ 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);
xfs_growfs_log_t *in)
{
int error;
+
+ 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);
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
return 0;
}
-void
+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, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
+ if (error) {
xfs_trans_cancel(tp, 0);
- return;
+ return error;
}
ip = mp->m_rootip;
xfs_trans_ihold(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
xfs_trans_set_sync(tp);
- xfs_trans_commit(tp, 0);
+ error = xfs_trans_commit(tp, 0);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ return error;
}
int
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff