https://jira.sw.ru/browse/PSBM-101418
Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
---
drivers/block/ploop/io_kaio.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/block/ploop/io_kaio.c b/drivers/block/ploop/io_kaio.c
index 9f391620a4f7..1cac861e9be0 100644
--- a/drivers/block/ploop/io_kaio.c
+++ b/drivers/block/ploop/io_kaio.c
@@ -479,6 +479,7 @@ static int kaio_fsync_thread(void * data)
{
struct ploop_io * io = data;
struct ploop_device * plo = io->plo;
+ loff_t isize;
set_user_nice(current, -20);
@@ -512,6 +513,9 @@ static int kaio_fsync_thread(void * data)
/* trick: preq->prealloc_size is actually new pos of eof */
if (preq->prealloc_size) {
+ isize = i_size_read(io->files.inode);
+ if (WARN_ON_ONCE(preq->prealloc_size < isize))
+ goto out;
err = kaio_truncate(io, io->files.file,
preq->prealloc_size >>
(plo->cluster_log + 9));
if (err)
@@ -536,7 +540,7 @@ static int kaio_fsync_thread(void * data)
}
}
}
-
+out:
spin_lock_irq(&plo->lock);
list_add_tail(&preq->list, &plo->ready_queue);
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