[3/7] cifs: smbd: Return -EINVAL when the number of iovs exceeds SMBDIRECT_MAX_SGE
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Message ID 1571259116-102015-4-git-send-email-longli@linuxonhyperv.com
State New
Headers show
Series
  • cifs: smbd: Improve reliability on transport reconnect
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Commit Message

Long Li Oct. 16, 2019, 8:51 p.m. UTC
From: Long Li <longli@microsoft.com>

While it's not friendly to fail user processes that issue more iovs
than we support, at least we should return the correct error code so the
user process gets a chance to retry with smaller number of iovs.

Signed-off-by: Long Li <longli@microsoft.com>
Cc: stable@vger.kernel.org
---
 fs/cifs/smbdirect.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index cd07e5301d42..d41a9345f90d 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -1069,7 +1069,7 @@  static int smbd_post_send_data(
 
 	if (n_vec > SMBDIRECT_MAX_SGE) {
 		cifs_dbg(VFS, "Can't fit data to SGL, n_vec=%d\n", n_vec);
-		return -ENOMEM;
+		return -EINVAL;
 	}
 
 	sg_init_table(sgl, n_vec);