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smbdirect: Fix error cleanup in smbdirect_map_sges_from_iter()

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Fix smbdirect_map_sges_from_iter() to use pre-decrement, not post-decrement
so that it cleans up the correct slots.

Fixes: e5fbdde430 ("cifs: Add a function to build an RDMA SGE list from an iterator")
Closes: https://sashiko.dev/#/patchset/20260326104544.509518-1-dhowells%40redhat.com
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Tom Talpey <tom@talpey.com>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
David Howells
2026-05-13 19:50:02 +01:00
committed by Steve French
parent 81a874233c
commit c207f1d785
1 changed files with 1 additions and 1 deletions
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2
fs/smb/smbdirect/connection.c
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@@ -2168,7 +2168,7 @@ static ssize_t smbdirect_map_sges_from_iter(struct iov_iter *iter, size_t len,
if (ret < 0) {
while (state->num_sge > before) {
struct ib_sge *sge = &state->sge[state->num_sge--];
struct ib_sge *sge = &state->sge[--state->num_sge];
ib_dma_unmap_page(state->device,
sge->addr,