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Diffstat (limited to 'fs/xfs/xfs_fsops.c')
-rw-r--r--fs/xfs/xfs_fsops.c212
1 files changed, 157 insertions, 55 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index b4d75825ae37..0b7f986745c1 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -23,6 +23,7 @@
#include "xfs_trans_resv.h"
#include "xfs_sb.h"
#include "xfs_mount.h"
+#include "xfs_defer.h"
#include "xfs_da_format.h"
#include "xfs_da_btree.h"
#include "xfs_inode.h"
@@ -32,6 +33,7 @@
#include "xfs_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_alloc.h"
+#include "xfs_rmap_btree.h"
#include "xfs_ialloc.h"
#include "xfs_fsops.h"
#include "xfs_itable.h"
@@ -40,6 +42,7 @@
#include "xfs_trace.h"
#include "xfs_log.h"
#include "xfs_filestream.h"
+#include "xfs_rmap.h"
/*
* File system operations
@@ -103,7 +106,9 @@ xfs_fs_geometry(
(xfs_sb_version_hasfinobt(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_FINOBT : 0) |
(xfs_sb_version_hassparseinodes(&mp->m_sb) ?
- XFS_FSOP_GEOM_FLAGS_SPINODES : 0);
+ XFS_FSOP_GEOM_FLAGS_SPINODES : 0) |
+ (xfs_sb_version_hasrmapbt(&mp->m_sb) ?
+ XFS_FSOP_GEOM_FLAGS_RMAPBT : 0);
geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ?
mp->m_sb.sb_logsectsize : BBSIZE;
geo->rtsectsize = mp->m_sb.sb_blocksize;
@@ -239,10 +244,17 @@ xfs_growfs_data_private(
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);
+ if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
+ agf->agf_roots[XFS_BTNUM_RMAPi] =
+ cpu_to_be32(XFS_RMAP_BLOCK(mp));
+ agf->agf_levels[XFS_BTNUM_RMAPi] = cpu_to_be32(1);
+ agf->agf_rmap_blocks = cpu_to_be32(1);
+ }
+
agf->agf_flfirst = cpu_to_be32(1);
agf->agf_fllast = 0;
agf->agf_flcount = 0;
- tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp);
+ tmpsize = agsize - mp->m_ag_prealloc_blocks;
agf->agf_freeblks = cpu_to_be32(tmpsize);
agf->agf_longest = cpu_to_be32(tmpsize);
if (xfs_sb_version_hascrc(&mp->m_sb))
@@ -339,7 +351,7 @@ xfs_growfs_data_private(
agno, 0);
arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1);
- arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
+ arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks);
arec->ar_blockcount = cpu_to_be32(
agsize - be32_to_cpu(arec->ar_startblock));
@@ -368,7 +380,7 @@ xfs_growfs_data_private(
agno, 0);
arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1);
- arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
+ arec->ar_startblock = cpu_to_be32(mp->m_ag_prealloc_blocks);
arec->ar_blockcount = cpu_to_be32(
agsize - be32_to_cpu(arec->ar_startblock));
nfree += be32_to_cpu(arec->ar_blockcount);
@@ -378,6 +390,72 @@ xfs_growfs_data_private(
if (error)
goto error0;
+ /* RMAP btree root block */
+ if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
+ struct xfs_rmap_rec *rrec;
+ struct xfs_btree_block *block;
+
+ bp = xfs_growfs_get_hdr_buf(mp,
+ XFS_AGB_TO_DADDR(mp, agno, XFS_RMAP_BLOCK(mp)),
+ BTOBB(mp->m_sb.sb_blocksize), 0,
+ &xfs_rmapbt_buf_ops);
+ if (!bp) {
+ error = -ENOMEM;
+ goto error0;
+ }
+
+ xfs_btree_init_block(mp, bp, XFS_RMAP_CRC_MAGIC, 0, 0,
+ agno, XFS_BTREE_CRC_BLOCKS);
+ block = XFS_BUF_TO_BLOCK(bp);
+
+
+ /*
+ * mark the AG header regions as static metadata The BNO
+ * btree block is the first block after the headers, so
+ * it's location defines the size of region the static
+ * metadata consumes.
+ *
+ * Note: unlike mkfs, we never have to account for log
+ * space when growing the data regions
+ */
+ rrec = XFS_RMAP_REC_ADDR(block, 1);
+ rrec->rm_startblock = 0;
+ rrec->rm_blockcount = cpu_to_be32(XFS_BNO_BLOCK(mp));
+ rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_FS);
+ rrec->rm_offset = 0;
+ be16_add_cpu(&block->bb_numrecs, 1);
+
+ /* account freespace btree root blocks */
+ rrec = XFS_RMAP_REC_ADDR(block, 2);
+ rrec->rm_startblock = cpu_to_be32(XFS_BNO_BLOCK(mp));
+ rrec->rm_blockcount = cpu_to_be32(2);
+ rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG);
+ rrec->rm_offset = 0;
+ be16_add_cpu(&block->bb_numrecs, 1);
+
+ /* account inode btree root blocks */
+ rrec = XFS_RMAP_REC_ADDR(block, 3);
+ rrec->rm_startblock = cpu_to_be32(XFS_IBT_BLOCK(mp));
+ rrec->rm_blockcount = cpu_to_be32(XFS_RMAP_BLOCK(mp) -
+ XFS_IBT_BLOCK(mp));
+ rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_INOBT);
+ rrec->rm_offset = 0;
+ be16_add_cpu(&block->bb_numrecs, 1);
+
+ /* account for rmap btree root */
+ rrec = XFS_RMAP_REC_ADDR(block, 4);
+ rrec->rm_startblock = cpu_to_be32(XFS_RMAP_BLOCK(mp));
+ rrec->rm_blockcount = cpu_to_be32(1);
+ rrec->rm_owner = cpu_to_be64(XFS_RMAP_OWN_AG);
+ rrec->rm_offset = 0;
+ be16_add_cpu(&block->bb_numrecs, 1);
+
+ error = xfs_bwrite(bp);
+ xfs_buf_relse(bp);
+ if (error)
+ goto error0;
+ }
+
/*
* INO btree root block
*/
@@ -435,6 +513,8 @@ xfs_growfs_data_private(
* There are new blocks in the old last a.g.
*/
if (new) {
+ struct xfs_owner_info oinfo;
+
/*
* Change the agi length.
*/
@@ -462,14 +542,20 @@ xfs_growfs_data_private(
be32_to_cpu(agi->agi_length));
xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH);
+
/*
* Free the new space.
+ *
+ * XFS_RMAP_OWN_NULL is used here to tell the rmap btree that
+ * this doesn't actually exist in the rmap btree.
*/
- error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno,
- be32_to_cpu(agf->agf_length) - new), new);
- if (error) {
+ xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_NULL);
+ error = xfs_free_extent(tp,
+ XFS_AGB_TO_FSB(mp, agno,
+ be32_to_cpu(agf->agf_length) - new),
+ new, &oinfo);
+ if (error)
goto error0;
- }
}
/*
@@ -501,6 +587,7 @@ xfs_growfs_data_private(
} else
mp->m_maxicount = 0;
xfs_set_low_space_thresholds(mp);
+ mp->m_alloc_set_aside = xfs_alloc_set_aside(mp);
/* update secondary superblocks. */
for (agno = 1; agno < nagcount; agno++) {
@@ -638,7 +725,7 @@ xfs_fs_counts(
cnt->allocino = percpu_counter_read_positive(&mp->m_icount);
cnt->freeino = percpu_counter_read_positive(&mp->m_ifree);
cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) -
- XFS_ALLOC_SET_ASIDE(mp);
+ mp->m_alloc_set_aside;
spin_lock(&mp->m_sb_lock);
cnt->freertx = mp->m_sb.sb_frextents;
@@ -667,8 +754,11 @@ xfs_reserve_blocks(
__uint64_t *inval,
xfs_fsop_resblks_t *outval)
{
- __int64_t lcounter, delta, fdblks_delta;
+ __int64_t lcounter, delta;
+ __int64_t fdblks_delta = 0;
__uint64_t request;
+ __int64_t free;
+ int error = 0;
/* If inval is null, report current values and return */
if (inval == (__uint64_t *)NULL) {
@@ -682,24 +772,23 @@ xfs_reserve_blocks(
request = *inval;
/*
- * 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.
+ * With per-cpu counters, this becomes an interesting problem. we need
+ * to 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 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.
*/
-retry:
spin_lock(&mp->m_sb_lock);
/*
* If our previous reservation was larger than the current value,
- * then move any unused blocks back to the free pool.
+ * then move any unused blocks back to the free pool. Modify the resblks
+ * counters directly since we shouldn't have any problems unreserving
+ * space.
*/
- fdblks_delta = 0;
if (mp->m_resblks > request) {
lcounter = mp->m_resblks_avail - request;
if (lcounter > 0) { /* release unused blocks */
@@ -707,54 +796,67 @@ retry:
mp->m_resblks_avail -= lcounter;
}
mp->m_resblks = request;
- } else {
- __int64_t free;
+ if (fdblks_delta) {
+ spin_unlock(&mp->m_sb_lock);
+ error = xfs_mod_fdblocks(mp, fdblks_delta, 0);
+ spin_lock(&mp->m_sb_lock);
+ }
+
+ goto out;
+ }
+ /*
+ * If the request is larger than the current reservation, reserve the
+ * blocks before we update the reserve counters. Sample m_fdblocks and
+ * perform a partial reservation if the request exceeds free space.
+ */
+ error = -ENOSPC;
+ do {
free = percpu_counter_sum(&mp->m_fdblocks) -
- XFS_ALLOC_SET_ASIDE(mp);
+ mp->m_alloc_set_aside;
if (!free)
- goto out; /* ENOSPC and fdblks_delta = 0 */
+ break;
delta = request - mp->m_resblks;
lcounter = free - delta;
- if (lcounter < 0) {
+ if (lcounter < 0)
/* We can't satisfy the request, just get what we can */
- mp->m_resblks += free;
- mp->m_resblks_avail += free;
- fdblks_delta = -free;
- } else {
- 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);
+ fdblks_delta = free;
+ else
+ fdblks_delta = delta;
- 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.
+ * We'll either succeed in getting space 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_fdblocks(mp, fdblks_delta, 0);
- if (error == -ENOSPC)
- goto retry;
+ spin_unlock(&mp->m_sb_lock);
+ error = xfs_mod_fdblocks(mp, -fdblks_delta, 0);
+ spin_lock(&mp->m_sb_lock);
+ } while (error == -ENOSPC);
+
+ /*
+ * Update the reserve counters if blocks have been successfully
+ * allocated.
+ */
+ if (!error && fdblks_delta) {
+ mp->m_resblks += fdblks_delta;
+ mp->m_resblks_avail += fdblks_delta;
}
- return 0;
+
+out:
+ if (outval) {
+ outval->resblks = mp->m_resblks;
+ outval->resblks_avail = mp->m_resblks_avail;
+ }
+
+ spin_unlock(&mp->m_sb_lock);
+ return error;
}
int
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 13:09:07 +0000