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authorKevin Wolf <kwolf@redhat.com>2023-02-03 16:21:50 +0100
committerKevin Wolf <kwolf@redhat.com>2023-02-23 19:49:17 +0100
commitb9b10c35e5c8bdb800601b142c44a4bd2da5a6d2 (patch)
treed0f692507ec8ea696ecea07c1aae59a839568795 /block/preallocate.c
parent7b1fb72e2c1b9fbca17c13b753aee25f445cad24 (diff)
block: Mark public read/write functions GRAPH_RDLOCK
This adds GRAPH_RDLOCK annotations to declare that callers of bdrv_co_pread*/pwrite*() 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: <20230203152202.49054-12-kwolf@redhat.com> Reviewed-by: Emanuele Giuseppe Esposito <eesposit@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/preallocate.c')
-rw-r--r--block/preallocate.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/block/preallocate.c b/block/preallocate.c
index 91d73c81c6..63a296882d 100644
--- a/block/preallocate.c
+++ b/block/preallocate.c
@@ -226,9 +226,10 @@ static void preallocate_reopen_abort(BDRVReopenState *state)
state->opaque = NULL;
}
-static coroutine_fn int preallocate_co_preadv_part(
- BlockDriverState *bs, int64_t offset, int64_t bytes,
- QEMUIOVector *qiov, size_t qiov_offset, BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+preallocate_co_preadv_part(BlockDriverState *bs, int64_t offset, int64_t bytes,
+ QEMUIOVector *qiov, size_t qiov_offset,
+ BdrvRequestFlags flags)
{
return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,
flags);
@@ -359,14 +360,11 @@ preallocate_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,
return bdrv_co_pwrite_zeroes(bs->file, offset, bytes, flags);
}
-static coroutine_fn int preallocate_co_pwritev_part(BlockDriverState *bs,
- int64_t offset,
- int64_t bytes,
- QEMUIOVector *qiov,
- size_t qiov_offset,
- BdrvRequestFlags flags)
+static int coroutine_fn GRAPH_RDLOCK
+preallocate_co_pwritev_part(BlockDriverState *bs, int64_t offset, int64_t bytes,
+ QEMUIOVector *qiov, size_t qiov_offset,
+ BdrvRequestFlags flags)
{
- assume_graph_lock(); /* FIXME */
handle_write(bs, offset, bytes, false);
return bdrv_co_pwritev_part(bs->file, offset, bytes, qiov, qiov_offset,