git: 63ee747febbf - main - zfs: Revert "ZFS_IOC_COUNT_FILLED does unnecessary txg_wait_synced()"

The branch main has been updated by mjg:

URL: https://cgit.FreeBSD.org/src/commit/?id=63ee747febbf024be0aace61161241b53245449e

commit 63ee747febbf024be0aace61161241b53245449e
Author:     Mateusz Guzik <mjg@FreeBSD.org>
AuthorDate: 2023-04-15 20:24:51 +0000
Commit:     Mateusz Guzik <mjg@FreeBSD.org>
CommitDate: 2023-04-15 21:34:54 +0000

    zfs: Revert "ZFS_IOC_COUNT_FILLED does unnecessary txg_wait_synced()"
    
    This reverts commit 519851122b1703b8445ec17bc89b347cea965bb9.
    
    It results in data corruption, see:
    https://github.com/openzfs/zfs/issues/14753
    
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
---
 sys/contrib/openzfs/module/zfs/dnode.c | 21 +++++----------------
 1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/sys/contrib/openzfs/module/zfs/dnode.c b/sys/contrib/openzfs/module/zfs/dnode.c
index 367bfaa80726..d15268cd7bc7 100644
--- a/sys/contrib/openzfs/module/zfs/dnode.c
+++ b/sys/contrib/openzfs/module/zfs/dnode.c
@@ -1764,29 +1764,20 @@ dnode_try_claim(objset_t *os, uint64_t object, int slots)
 }
 
 /*
- * Checks if the dnode might contain any uncommitted changes to data blocks.
- * Dirty metadata (e.g. bonus buffer) does not count.
+ * Checks if the dnode contains any uncommitted dirty records.
  */
 boolean_t
 dnode_is_dirty(dnode_t *dn)
 {
 	mutex_enter(&dn->dn_mtx);
+
 	for (int i = 0; i < TXG_SIZE; i++) {
-		list_t *list = &dn->dn_dirty_records[i];
-		for (dbuf_dirty_record_t *dr = list_head(list);
-		    dr != NULL; dr = list_next(list, dr)) {
-			if (dr->dr_dbuf == NULL ||
-			    (dr->dr_dbuf->db_blkid != DMU_BONUS_BLKID &&
-			    dr->dr_dbuf->db_blkid != DMU_SPILL_BLKID)) {
-				mutex_exit(&dn->dn_mtx);
-				return (B_TRUE);
-			}
-		}
-		if (dn->dn_free_ranges[i] != NULL) {
+		if (multilist_link_active(&dn->dn_dirty_link[i])) {
 			mutex_exit(&dn->dn_mtx);
 			return (B_TRUE);
 		}
 	}
+
 	mutex_exit(&dn->dn_mtx);
 
 	return (B_FALSE);
@@ -2650,9 +2641,7 @@ dnode_next_offset(dnode_t *dn, int flags, uint64_t *offset,
 		rw_enter(&dn->dn_struct_rwlock, RW_READER);
 
 	if (dn->dn_phys->dn_nlevels == 0) {
-		if (!(flags & DNODE_FIND_HOLE)) {
-			error = SET_ERROR(ESRCH);
-		}
+		error = SET_ERROR(ESRCH);
 		goto out;
 	}