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authorKevin Wolf <kwolf@redhat.com>2023-02-03 16:21:42 +0100
committerKevin Wolf <kwolf@redhat.com>2023-02-23 19:49:03 +0100
commitc2b8e315162bd5d5ab30c57bcc7bbb88b3ec4d54 (patch)
tree04b293542029d7b9d5881f92aaafa547ea7fe980 /block/io.c
parent32125b14606a454ed109ea6d9da32c747e94926f (diff)
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block: Mark bdrv_co_truncate() and callers GRAPH_RDLOCK
This adds GRAPH_RDLOCK annotations to declare that callers of bdrv_co_truncate() need to hold a reader lock for the graph. For some places, we know that they will hold the lock, but we don't have the GRAPH_RDLOCK annotations yet. In this case, add assume_graph_lock() with a FIXME comment. These places will be removed once everything is properly annotated. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20230203152202.49054-4-kwolf@redhat.com> Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/io.c')
-rw-r--r--block/io.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/io.c b/block/io.c
index d2be37b..35025fc 100644
--- a/block/io.c
+++ b/block/io.c
@@ -3380,6 +3380,7 @@ int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset, bool exact,
int64_t old_size, new_bytes;
int ret;
IO_CODE();
+ assert_bdrv_graph_readable();
/* if bs->drv == NULL, bs is closed, so there's nothing to do here */
if (!drv) {