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Restore dirty dnode detection logic

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In addition to flushing memory mapped regions when checking holes,
commit de198f2d95 modified the dirty dnode detection logic to check
the dn->dn_dirty_records instead of the dn->dn_dirty_link.  Relying
on the dirty record has not be reliable, switch back to the previous
method.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #11900 
Closes #12745
This commit is contained in:
Brian Behlendorf 2021-11-10 16:14:32 -08:00 committed by Tony Hutter
parent 664d487a5d
commit d7e640cf95
1 changed files with 1 additions and 1 deletions
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2
module/zfs/dnode.c
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@ -1657,7 +1657,7 @@ dnode_is_dirty(dnode_t *dn)
mutex_enter(&dn->dn_mtx);
for (int i = 0; i < TXG_SIZE; i++) {
if (list_head(&dn->dn_dirty_records[i]) != NULL) {
if (multilist_link_active(&dn->dn_dirty_link[i])) {
mutex_exit(&dn->dn_mtx);
return (B_TRUE);
}