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smb: client: let destroy_mr_list() remove locked from the list

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This should make sure get_mr() can't see the removed entries.

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Stefan Metzmacher 2025-10-12 21:10:24 +02:00 committed by Steve French
parent 19421ec198
commit a8e128b293
1 changed files with 8 additions and 1 deletions
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9
fs/smb/client/smbdirect.c
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@ -2355,9 +2355,16 @@ static void smbd_mr_recovery_work(struct work_struct *work)
static void destroy_mr_list(struct smbdirect_socket *sc)
{
struct smbdirect_mr_io *mr, *tmp;
LIST_HEAD(all_list);
unsigned long flags;
disable_work_sync(&sc->mr_io.recovery_work);
list_for_each_entry_safe(mr, tmp, &sc->mr_io.all.list, list) {
spin_lock_irqsave(&sc->mr_io.all.lock, flags);
list_splice_tail_init(&sc->mr_io.all.list, &all_list);
spin_unlock_irqrestore(&sc->mr_io.all.lock, flags);
list_for_each_entry_safe(mr, tmp, &all_list, list) {
if (mr->state == SMBDIRECT_MR_INVALIDATED)
ib_dma_unmap_sg(sc->ib.dev, mr->sgt.sgl,
mr->sgt.nents, mr->dir);