diff options
| author |   Steve French <stfrench@microsoft.com> | 2019-09-09 13:30:15 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2019-09-16 11:43:38 -0500 |
| commit | 10328c44cc1506dd82fd835efcaafd519866c464 (patch) | |
| tree | 52a8a71596ab8a61c27fa1f7d19ddbf6728d2492 /fs | |
| parent | cifs: add a helper to find an existing readable handle to a file (diff) | |
| download | linux-dev-10328c44cc1506dd82fd835efcaafd519866c464.tar.xz linux-dev-10328c44cc1506dd82fd835efcaafd519866c464.zip | |
smb3: only offload decryption of read responses if multiple requests
No point in offloading read decryption if no other requests on the
wire
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/cifsfs.c | 9 | ||||
| -rw-r--r-- | fs/cifs/smb2ops.c | 2 |
2 files changed, 7 insertions, 4 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index ebf85a5d95e4..c1b685072063 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -1503,11 +1503,14 @@ init_cifs(void) } /* - * BB Consider setting limit!=0 maybe to min(num_of_cores - 1, 3) so we - * don't launch too many worker threads + * Consider in future setting limit!=0 maybe to min(num_of_cores - 1, 3) + * so that we don't launch too many worker threads but + * Documentation/workqueue.txt recommends setting it to 0 */ + + /* WQ_UNBOUND allows decrypt tasks to run on any CPU */ decrypt_wq = alloc_workqueue("smb3decryptd", - WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); + WQ_UNBOUND|WQ_FREEZABLE|WQ_MEM_RECLAIM, 0); if (!decrypt_wq) { rc = -ENOMEM; goto out_destroy_cifsiod_wq; diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 1cfb8d518132..72b3e39d7f4f 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -4121,7 +4121,7 @@ receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid, * use more cores decrypting which can be expensive */ - if ((server->min_offload) && + if ((server->min_offload) && (server->in_flight > 1) && (server->pdu_size >= server->min_offload)) { dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL); if (dw == NULL) |