[PATCH 21/28] xfs: refactor releasing finished intents during log recovery

Darrick J. Wong
2020-05-05T01:12:51Z

From: Darrick J. Wong <darrick.wong@oracle.com>

Replace the open-coded AIL item walking with a proper helper when we're
trying to release an intent item that has been finished.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/libxfs/xfs_log_recover.h | 3 +++
fs/xfs/xfs_bmap_item.c | 42 +++++++++------------------------------
fs/xfs/xfs_extfree_item.c | 42 +++++++++------------------------------
fs/xfs/xfs_log_recover.c | 35 ++++++++++++++++++++++++++++++++-
fs/xfs/xfs_refcount_item.c | 42 +++++++++------------------------------
fs/xfs/xfs_rmap_item.c | 42 +++++++++------------------------------
fs/xfs/xfs_trans.h | 1 +
7 files changed, 78 insertions(+), 129 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_log_recover.h b/fs/xfs/libxfs/xfs_log_recover.h
index d4d6d4f84fda..b875819a1c04 100644
--- a/fs/xfs/libxfs/xfs_log_recover.h
+++ b/fs/xfs/libxfs/xfs_log_recover.h
@@ -126,4 +126,7 @@ bool xlog_put_buffer_cancelled(struct xlog *log, xfs_daddr_t blkno, uint len);
void xlog_recover_iodone(struct xfs_buf *bp);
int xlog_recover_process_unlinked(struct xlog *log);

+void xlog_recover_release_intent(struct xlog *log, unsigned short intent_type,
+ uint64_t intent_id);
+
#endif /* __XFS_LOG_RECOVER_H__ */
diff --git a/fs/xfs/xfs_bmap_item.c b/fs/xfs/xfs_bmap_item.c
index f88ebf8634c4..96627ea800c8 100644
--- a/fs/xfs/xfs_bmap_item.c
+++ b/fs/xfs/xfs_bmap_item.c
@@ -578,12 +578,21 @@ xfs_bui_item_recover(
return error;
}

+STATIC bool
+xfs_bui_item_match(
+ struct xfs_log_item *lip,
+ uint64_t intent_id)
+{
+ return BUI_ITEM(lip)->bui_format.bui_id == intent_id;
+}
+
static const struct xfs_item_ops xfs_bui_item_ops = {
.iop_size = xfs_bui_item_size,
.iop_format = xfs_bui_item_format,
.iop_unpin = xfs_bui_item_unpin,
.iop_release = xfs_bui_item_release,
.iop_recover = xfs_bui_item_recover,
+ .iop_match = xfs_bui_item_match,
};

/*
@@ -675,45 +684,14 @@ xlog_recover_bmap_done_commit_pass2(
xfs_lsn_t lsn)
{
struct xfs_bud_log_format *bud_formatp;
- struct xfs_bui_log_item *buip = NULL;
- struct xfs_log_item *lip;
- uint64_t bui_id;
- struct xfs_ail_cursor cur;
- struct xfs_ail *ailp = log->l_ailp;

bud_formatp = item->ri_buf[0].i_addr;
if (item->ri_buf[0].i_len != sizeof(struct xfs_bud_log_format)) {
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, log->l_mp);
return -EFSCORRUPTED;
}
- bui_id = bud_formatp->bud_bui_id;
-
- /*
- * Search for the BUI with the id in the BUD format structure in the
- * AIL.
- */
- spin_lock(&ailp->ail_lock);
- lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
- while (lip != NULL) {
- if (lip->li_type == XFS_LI_BUI) {
- buip = (struct xfs_bui_log_item *)lip;
- if (buip->bui_format.bui_id == bui_id) {
- /*
- * Drop the BUD reference to the BUI. This
- * removes the BUI from the AIL and frees it.
- */
- spin_unlock(&ailp->ail_lock);
- xfs_bui_release(buip);
- spin_lock(&ailp->ail_lock);
- break;
- }
- }
- lip = xfs_trans_ail_cursor_next(ailp, &cur);
- }
-
- xfs_trans_ail_cursor_done(&cur);
- spin_unlock(&ailp->ail_lock);

+ xlog_recover_release_intent(log, XFS_LI_BUI, bud_formatp->bud_bui_id);
return 0;
}

diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c
index 3fc8a9864217..4e1b10ab17a5 100644
--- a/fs/xfs/xfs_extfree_item.c
+++ b/fs/xfs/xfs_extfree_item.c
@@ -665,12 +665,21 @@ xfs_efi_item_recover(
return error;
}

+STATIC bool
+xfs_efi_item_match(
+ struct xfs_log_item *lip,
+ uint64_t intent_id)
+{
+ return EFI_ITEM(lip)->efi_format.efi_id == intent_id;
+}
+
static const struct xfs_item_ops xfs_efi_item_ops = {
.iop_size = xfs_efi_item_size,
.iop_format = xfs_efi_item_format,
.iop_unpin = xfs_efi_item_unpin,
.iop_release = xfs_efi_item_release,
.iop_recover = xfs_efi_item_recover,
+ .iop_match = xfs_efi_item_match,
};

@@ -734,46 +743,15 @@ xlog_recover_extfree_done_commit_pass2(
struct xlog_recover_item *item,
xfs_lsn_t lsn)
{
- struct xfs_ail_cursor cur;
struct xfs_efd_log_format *efd_formatp;
- struct xfs_efi_log_item *efip = NULL;
- struct xfs_log_item *lip;
- struct xfs_ail *ailp = log->l_ailp;
- uint64_t efi_id;

efd_formatp = item->ri_buf[0].i_addr;
ASSERT((item->ri_buf[0].i_len == (sizeof(xfs_efd_log_format_32_t) +
((efd_formatp->efd_nextents - 1) * sizeof(xfs_extent_32_t)))) ||
(item->ri_buf[0].i_len == (sizeof(xfs_efd_log_format_64_t) +
((efd_formatp->efd_nextents - 1) * sizeof(xfs_extent_64_t)))));
- efi_id = efd_formatp->efd_efi_id;
-
- /*
- * Search for the EFI with the id in the EFD format structure in the
- * AIL.
- */
- spin_lock(&ailp->ail_lock);
- lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
- while (lip != NULL) {
- if (lip->li_type == XFS_LI_EFI) {
- efip = (struct xfs_efi_log_item *)lip;
- if (efip->efi_format.efi_id == efi_id) {
- /*
- * Drop the EFD reference to the EFI. This
- * removes the EFI from the AIL and frees it.
- */
- spin_unlock(&ailp->ail_lock);
- xfs_efi_release(efip);
- spin_lock(&ailp->ail_lock);
- break;
- }
- }
- lip = xfs_trans_ail_cursor_next(ailp, &cur);
- }
-
- xfs_trans_ail_cursor_done(&cur);
- spin_unlock(&ailp->ail_lock);

+ xlog_recover_release_intent(log, XFS_LI_EFI, efd_formatp->efd_efi_id);
return 0;
}

diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 0ccc09c004f1..55477b9b9311 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -1779,6 +1779,38 @@ xlog_clear_stale_blocks(
return 0;
}

+/*
+ * Release the recovered intent item in the AIL that matches the given intent
+ * type and intent id.
+ */
+void
+xlog_recover_release_intent(
+ struct xlog *log,
+ unsigned short intent_type,
+ uint64_t intent_id)
+{
+ struct xfs_ail_cursor cur;
+ struct xfs_log_item *lip;
+ struct xfs_ail *ailp = log->l_ailp;
+
+ spin_lock(&ailp->ail_lock);
+ for (lip = xfs_trans_ail_cursor_first(ailp, &cur, 0); lip != NULL;
+ lip = xfs_trans_ail_cursor_next(ailp, &cur)) {
+ if (lip->li_type != intent_type)
+ continue;
+ if (!lip->li_ops->iop_match(lip, intent_id))
+ continue;
+
+ spin_unlock(&ailp->ail_lock);
+ lip->li_ops->iop_release(lip);
+ spin_lock(&ailp->ail_lock);
+ break;
+ }
+
+ xfs_trans_ail_cursor_done(&cur);
+ spin_unlock(&ailp->ail_lock);
+}
+
/******************************************************************************
*
* Log recover routines
@@ -2590,7 +2622,8 @@ xlog_finish_defer_ops(
/* Is this log item a deferred action intent? */
static inline bool xlog_item_is_intent(struct xfs_log_item *lip)
{
- return lip->li_ops->iop_recover != NULL;
+ return lip->li_ops->iop_recover != NULL &&
+ lip->li_ops->iop_match != NULL;
}

/*
diff --git a/fs/xfs/xfs_refcount_item.c b/fs/xfs/xfs_refcount_item.c
index 5b72eebd8764..27126b136b5a 100644
--- a/fs/xfs/xfs_refcount_item.c
+++ b/fs/xfs/xfs_refcount_item.c
@@ -591,12 +591,21 @@ xfs_cui_item_recover(
return error;
}

+STATIC bool
+xfs_cui_item_match(
+ struct xfs_log_item *lip,
+ uint64_t intent_id)
+{
+ return CUI_ITEM(lip)->cui_format.cui_id == intent_id;
+}
+
static const struct xfs_item_ops xfs_cui_item_ops = {
.iop_size = xfs_cui_item_size,
.iop_format = xfs_cui_item_format,
.iop_unpin = xfs_cui_item_unpin,
.iop_release = xfs_cui_item_release,
.iop_recover = xfs_cui_item_recover,
+ .iop_match = xfs_cui_item_match,
};

/*
@@ -684,45 +693,14 @@ xlog_recover_refcount_done_commit_pass2(
xfs_lsn_t lsn)
{
struct xfs_cud_log_format *cud_formatp;
- struct xfs_cui_log_item *cuip = NULL;
- struct xfs_log_item *lip;
- uint64_t cui_id;
- struct xfs_ail_cursor cur;
- struct xfs_ail *ailp = log->l_ailp;

cud_formatp = item->ri_buf[0].i_addr;
if (item->ri_buf[0].i_len != sizeof(struct xfs_cud_log_format)) {
XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, log->l_mp);
return -EFSCORRUPTED;
}
- cui_id = cud_formatp->cud_cui_id;
-
- /*
- * Search for the CUI with the id in the CUD format structure in the
- * AIL.
- */
- spin_lock(&ailp->ail_lock);
- lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
- while (lip != NULL) {
- if (lip->li_type == XFS_LI_CUI) {
- cuip = (struct xfs_cui_log_item *)lip;
- if (cuip->cui_format.cui_id == cui_id) {
- /*
- * Drop the CUD reference to the CUI. This
- * removes the CUI from the AIL and frees it.
- */
- spin_unlock(&ailp->ail_lock);
- xfs_cui_release(cuip);
- spin_lock(&ailp->ail_lock);
- break;
- }
- }
- lip = xfs_trans_ail_cursor_next(ailp, &cur);
- }
-
- xfs_trans_ail_cursor_done(&cur);
- spin_unlock(&ailp->ail_lock);

+ xlog_recover_release_intent(log, XFS_LI_CUI, cud_formatp->cud_cui_id);
return 0;
}

diff --git a/fs/xfs/xfs_rmap_item.c b/fs/xfs/xfs_rmap_item.c
index e763dd8ed0a6..3987f217415c 100644
--- a/fs/xfs/xfs_rmap_item.c
+++ b/fs/xfs/xfs_rmap_item.c
@@ -606,12 +606,21 @@ xfs_rui_item_recover(
return error;
}

+STATIC bool
+xfs_rui_item_match(
+ struct xfs_log_item *lip,
+ uint64_t intent_id)
+{
+ return RUI_ITEM(lip)->rui_format.rui_id == intent_id;
+}
+
static const struct xfs_item_ops xfs_rui_item_ops = {
.iop_size = xfs_rui_item_size,
.iop_format = xfs_rui_item_format,
.iop_unpin = xfs_rui_item_unpin,
.iop_release = xfs_rui_item_release,
.iop_recover = xfs_rui_item_recover,
+ .iop_match = xfs_rui_item_match,
};

/*
@@ -675,42 +684,11 @@ xlog_recover_rmap_done_commit_pass2(
xfs_lsn_t lsn)
{
struct xfs_rud_log_format *rud_formatp;
- struct xfs_rui_log_item *ruip = NULL;
- struct xfs_log_item *lip;
- uint64_t rui_id;
- struct xfs_ail_cursor cur;
- struct xfs_ail *ailp = log->l_ailp;

rud_formatp = item->ri_buf[0].i_addr;
ASSERT(item->ri_buf[0].i_len == sizeof(struct xfs_rud_log_format));
- rui_id = rud_formatp->rud_rui_id;
-
- /*
- * Search for the RUI with the id in the RUD format structure in the
- * AIL.
- */
- spin_lock(&ailp->ail_lock);
- lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
- while (lip != NULL) {
- if (lip->li_type == XFS_LI_RUI) {
- ruip = (struct xfs_rui_log_item *)lip;
- if (ruip->rui_format.rui_id == rui_id) {
- /*
- * Drop the RUD reference to the RUI. This
- * removes the RUI from the AIL and frees it.
- */
- spin_unlock(&ailp->ail_lock);
- xfs_rui_release(ruip);
- spin_lock(&ailp->ail_lock);
- break;
- }
- }
- lip = xfs_trans_ail_cursor_next(ailp, &cur);
- }
-
- xfs_trans_ail_cursor_done(&cur);
- spin_unlock(&ailp->ail_lock);

+ xlog_recover_release_intent(log, XFS_LI_RUI, rud_formatp->rud_rui_id);
return 0;
}

diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 3f6a79108991..3e8808bb07c5 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -78,6 +78,7 @@ struct xfs_item_ops {
xfs_lsn_t (*iop_committed)(struct xfs_log_item *, xfs_lsn_t);
void (*iop_error)(struct xfs_log_item *, xfs_buf_t *);
int (*iop_recover)(struct xfs_log_item *lip, struct xfs_trans *tp);
+ bool (*iop_match)(struct xfs_log_item *item, uint64_t id);
};

/*