From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/fs/xfs/xfs_icreate_item.c | 223 ++++++++++++++++++++++++++++++++++++++-----------------
1 files changed, 154 insertions(+), 69 deletions(-)
diff --git a/kernel/fs/xfs/xfs_icreate_item.c b/kernel/fs/xfs/xfs_icreate_item.c
index 8381d34..9b3994b 100644
--- a/kernel/fs/xfs/xfs_icreate_item.c
+++ b/kernel/fs/xfs/xfs_icreate_item.c
@@ -9,13 +9,16 @@
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
-#include "xfs_bit.h"
#include "xfs_mount.h"
+#include "xfs_inode.h"
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
-#include "xfs_error.h"
#include "xfs_icreate_item.h"
#include "xfs_log.h"
+#include "xfs_log_priv.h"
+#include "xfs_log_recover.h"
+#include "xfs_ialloc.h"
+#include "xfs_trace.h"
kmem_zone_t *xfs_icreate_zone; /* inode create item zone */
@@ -56,80 +59,18 @@
sizeof(struct xfs_icreate_log));
}
-
-/* Pinning has no meaning for the create item, so just return. */
STATIC void
-xfs_icreate_item_pin(
+xfs_icreate_item_release(
struct xfs_log_item *lip)
{
+ kmem_cache_free(xfs_icreate_zone, ICR_ITEM(lip));
}
-
-/* pinning has no meaning for the create item, so just return. */
-STATIC void
-xfs_icreate_item_unpin(
- struct xfs_log_item *lip,
- int remove)
-{
-}
-
-STATIC void
-xfs_icreate_item_unlock(
- struct xfs_log_item *lip)
-{
- struct xfs_icreate_item *icp = ICR_ITEM(lip);
-
- if (test_bit(XFS_LI_ABORTED, &lip->li_flags))
- kmem_zone_free(xfs_icreate_zone, icp);
- return;
-}
-
-/*
- * Because we have ordered buffers being tracked in the AIL for the inode
- * creation, we don't need the create item after this. Hence we can free
- * the log item and return -1 to tell the caller we're done with the item.
- */
-STATIC xfs_lsn_t
-xfs_icreate_item_committed(
- struct xfs_log_item *lip,
- xfs_lsn_t lsn)
-{
- struct xfs_icreate_item *icp = ICR_ITEM(lip);
-
- kmem_zone_free(xfs_icreate_zone, icp);
- return (xfs_lsn_t)-1;
-}
-
-/* item can never get into the AIL */
-STATIC uint
-xfs_icreate_item_push(
- struct xfs_log_item *lip,
- struct list_head *buffer_list)
-{
- ASSERT(0);
- return XFS_ITEM_SUCCESS;
-}
-
-/* Ordered buffers do the dependency tracking here, so this does nothing. */
-STATIC void
-xfs_icreate_item_committing(
- struct xfs_log_item *lip,
- xfs_lsn_t lsn)
-{
-}
-
-/*
- * This is the ops vector shared by all buf log items.
- */
static const struct xfs_item_ops xfs_icreate_item_ops = {
+ .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED,
.iop_size = xfs_icreate_item_size,
.iop_format = xfs_icreate_item_format,
- .iop_pin = xfs_icreate_item_pin,
- .iop_unpin = xfs_icreate_item_unpin,
- .iop_push = xfs_icreate_item_push,
- .iop_unlock = xfs_icreate_item_unlock,
- .iop_committed = xfs_icreate_item_committed,
- .iop_committing = xfs_icreate_item_committing,
+ .iop_release = xfs_icreate_item_release,
};
@@ -156,7 +97,7 @@
{
struct xfs_icreate_item *icp;
- icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP);
+ icp = kmem_cache_zalloc(xfs_icreate_zone, GFP_KERNEL | __GFP_NOFAIL);
xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
&xfs_icreate_item_ops);
@@ -174,3 +115,147 @@
tp->t_flags |= XFS_TRANS_DIRTY;
set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags);
}
+
+static enum xlog_recover_reorder
+xlog_recover_icreate_reorder(
+ struct xlog_recover_item *item)
+{
+ /*
+ * Inode allocation buffers must be replayed before subsequent inode
+ * items try to modify those buffers. ICREATE items are the logical
+ * equivalent of logging a newly initialized inode buffer, so recover
+ * these at the same time that we recover logged buffers.
+ */
+ return XLOG_REORDER_BUFFER_LIST;
+}
+
+/*
+ * This routine is called when an inode create format structure is found in a
+ * committed transaction in the log. It's purpose is to initialise the inodes
+ * being allocated on disk. This requires us to get inode cluster buffers that
+ * match the range to be initialised, stamped with inode templates and written
+ * by delayed write so that subsequent modifications will hit the cached buffer
+ * and only need writing out at the end of recovery.
+ */
+STATIC int
+xlog_recover_icreate_commit_pass2(
+ struct xlog *log,
+ struct list_head *buffer_list,
+ struct xlog_recover_item *item,
+ xfs_lsn_t lsn)
+{
+ struct xfs_mount *mp = log->l_mp;
+ struct xfs_icreate_log *icl;
+ struct xfs_ino_geometry *igeo = M_IGEO(mp);
+ xfs_agnumber_t agno;
+ xfs_agblock_t agbno;
+ unsigned int count;
+ unsigned int isize;
+ xfs_agblock_t length;
+ int bb_per_cluster;
+ int cancel_count;
+ int nbufs;
+ int i;
+
+ icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr;
+ if (icl->icl_type != XFS_LI_ICREATE) {
+ xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type");
+ return -EINVAL;
+ }
+
+ if (icl->icl_size != 1) {
+ xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad icl size");
+ return -EINVAL;
+ }
+
+ agno = be32_to_cpu(icl->icl_ag);
+ if (agno >= mp->m_sb.sb_agcount) {
+ xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agno");
+ return -EINVAL;
+ }
+ agbno = be32_to_cpu(icl->icl_agbno);
+ if (!agbno || agbno == NULLAGBLOCK || agbno >= mp->m_sb.sb_agblocks) {
+ xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agbno");
+ return -EINVAL;
+ }
+ isize = be32_to_cpu(icl->icl_isize);
+ if (isize != mp->m_sb.sb_inodesize) {
+ xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad isize");
+ return -EINVAL;
+ }
+ count = be32_to_cpu(icl->icl_count);
+ if (!count) {
+ xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count");
+ return -EINVAL;
+ }
+ length = be32_to_cpu(icl->icl_length);
+ if (!length || length >= mp->m_sb.sb_agblocks) {
+ xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad length");
+ return -EINVAL;
+ }
+
+ /*
+ * The inode chunk is either full or sparse and we only support
+ * m_ino_geo.ialloc_min_blks sized sparse allocations at this time.
+ */
+ if (length != igeo->ialloc_blks &&
+ length != igeo->ialloc_min_blks) {
+ xfs_warn(log->l_mp,
+ "%s: unsupported chunk length", __FUNCTION__);
+ return -EINVAL;
+ }
+
+ /* verify inode count is consistent with extent length */
+ if ((count >> mp->m_sb.sb_inopblog) != length) {
+ xfs_warn(log->l_mp,
+ "%s: inconsistent inode count and chunk length",
+ __FUNCTION__);
+ return -EINVAL;
+ }
+
+ /*
+ * The icreate transaction can cover multiple cluster buffers and these
+ * buffers could have been freed and reused. Check the individual
+ * buffers for cancellation so we don't overwrite anything written after
+ * a cancellation.
+ */
+ bb_per_cluster = XFS_FSB_TO_BB(mp, igeo->blocks_per_cluster);
+ nbufs = length / igeo->blocks_per_cluster;
+ for (i = 0, cancel_count = 0; i < nbufs; i++) {
+ xfs_daddr_t daddr;
+
+ daddr = XFS_AGB_TO_DADDR(mp, agno,
+ agbno + i * igeo->blocks_per_cluster);
+ if (xlog_is_buffer_cancelled(log, daddr, bb_per_cluster))
+ cancel_count++;
+ }
+
+ /*
+ * We currently only use icreate for a single allocation at a time. This
+ * means we should expect either all or none of the buffers to be
+ * cancelled. Be conservative and skip replay if at least one buffer is
+ * cancelled, but warn the user that something is awry if the buffers
+ * are not consistent.
+ *
+ * XXX: This must be refined to only skip cancelled clusters once we use
+ * icreate for multiple chunk allocations.
+ */
+ ASSERT(!cancel_count || cancel_count == nbufs);
+ if (cancel_count) {
+ if (cancel_count != nbufs)
+ xfs_warn(mp,
+ "WARNING: partial inode chunk cancellation, skipped icreate.");
+ trace_xfs_log_recover_icreate_cancel(log, icl);
+ return 0;
+ }
+
+ trace_xfs_log_recover_icreate_recover(log, icl);
+ return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno,
+ length, be32_to_cpu(icl->icl_gen));
+}
+
+const struct xlog_recover_item_ops xlog_icreate_item_ops = {
+ .item_type = XFS_LI_ICREATE,
+ .reorder = xlog_recover_icreate_reorder,
+ .commit_pass2 = xlog_recover_icreate_commit_pass2,
+};
--
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