From: Paulo Alcantara <pc@cjr.nz>
Date: Tue, 31 Jan 2023 13:22:07 -0300
Subject: [PATCH] cifs: get rid of unneeded conditional in cifs_get_num_sgs()
Git-commit: 89542781737a783d94ace958548caa0651bfbc5e
References: bsc#1193629
Patch-mainline: v6.3-rc1

Just have @skip set to 0 after first iterations of the two nested
loops.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Paulo Alcantara <palcantara@suse.de>
---
 fs/cifs/cifsglob.h | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index cfdd5bf701a1..b26e824d6a0c 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -2162,6 +2162,12 @@ static inline unsigned int cifs_get_num_sgs(const struct smb_rqst *rqst,
 	unsigned long addr;
 	int i, j;
 
+	/*
+	 * The first rqst has a transform header where the first 20 bytes are
+	 * not part of the encrypted blob.
+	 */
+	skip = 20;
+
 	/* Assumes the first rqst has a transform header as the first iov.
 	 * I.e.
 	 * rqst[0].rq_iov[0]  is transform header
@@ -2169,14 +2175,9 @@ static inline unsigned int cifs_get_num_sgs(const struct smb_rqst *rqst,
 	 * rqst[1+].rq_iov[0+] data to be encrypted/decrypted
 	 */
 	for (i = 0; i < num_rqst; i++) {
-		/*
-		 * The first rqst has a transform header where the
-		 * first 20 bytes are not part of the encrypted blob.
-		 */
 		for (j = 0; j < rqst[i].rq_nvec; j++) {
 			struct kvec *iov = &rqst[i].rq_iov[j];
 
-			skip = (i == 0) && (j == 0) ? 20 : 0;
 			addr = (unsigned long)iov->iov_base + skip;
 			if (unlikely(is_vmalloc_addr((void *)addr))) {
 				len = iov->iov_len - skip;
@@ -2185,6 +2186,7 @@ static inline unsigned int cifs_get_num_sgs(const struct smb_rqst *rqst,
 			} else {
 				nents++;
 			}
+			skip = 0;
 		}
 		nents += rqst[i].rq_npages;
 	}
-- 
2.39.2