[PATCH 1/2] virtiofs: Improve three size determinations

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From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 29 Dec 2023 08:42:04 +0100

Replace the specification of data structures by pointer dereferences
as the parameter for the operator “sizeof” to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
 fs/fuse/virtio_fs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index 5f1be1da92ce..2f8ba9254c1e 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -1435,11 +1435,11 @@ static int virtio_fs_get_tree(struct fs_context *fsc)
 		goto out_err;

 	err = -ENOMEM;
-	fc = kzalloc(sizeof(struct fuse_conn), GFP_KERNEL);
+	fc = kzalloc(sizeof(*fc), GFP_KERNEL);
 	if (!fc)
 		goto out_err;

-	fm = kzalloc(sizeof(struct fuse_mount), GFP_KERNEL);
+	fm = kzalloc(sizeof(*fm), GFP_KERNEL);
 	if (!fm)
 		goto out_err;

@@ -1495,7 +1495,7 @@ static int virtio_fs_init_fs_context(struct fs_context *fsc)
 	if (fsc->purpose == FS_CONTEXT_FOR_SUBMOUNT)
 		return fuse_init_fs_context_submount(fsc);

-	ctx = kzalloc(sizeof(struct fuse_fs_context), GFP_KERNEL);
+	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
 		return -ENOMEM;
 	fsc->fs_private = ctx;
--
2.43.0






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