diff options
| -rw-r--r-- | fs/cifs/smb2misc.c | 59 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.c | 16 | ||||
| -rw-r--r-- | fs/cifs/smb2proto.h | 3 |
3 files changed, 63 insertions, 15 deletions
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index 713fecffc90f..5668fb7d94e5 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -738,36 +738,67 @@ smb2_cancelled_close_fid(struct work_struct *work) kfree(cancelled); } +/* Caller should already has an extra reference to @tcon */ +static int +__smb2_handle_cancelled_close(struct cifs_tcon *tcon, __u64 persistent_fid, + __u64 volatile_fid) +{ + struct close_cancelled_open *cancelled; + + cancelled = kzalloc(sizeof(*cancelled), GFP_KERNEL); + if (!cancelled) + return -ENOMEM; + + cancelled->fid.persistent_fid = persistent_fid; + cancelled->fid.volatile_fid = volatile_fid; + cancelled->tcon = tcon; + INIT_WORK(&cancelled->work, smb2_cancelled_close_fid); + WARN_ON(queue_work(cifsiod_wq, &cancelled->work) == false); + + return 0; +} + +int +smb2_handle_cancelled_close(struct cifs_tcon *tcon, __u64 persistent_fid, + __u64 volatile_fid) +{ + int rc; + + cifs_dbg(FYI, "%s: tc_count=%d\n", __func__, tcon->tc_count); + spin_lock(&cifs_tcp_ses_lock); + tcon->tc_count++; + spin_unlock(&cifs_tcp_ses_lock); + + rc = __smb2_handle_cancelled_close(tcon, persistent_fid, volatile_fid); + if (rc) + cifs_put_tcon(tcon); + + return rc; +} + int smb2_handle_cancelled_mid(char *buffer, struct TCP_Server_Info *server) { struct smb2_sync_hdr *sync_hdr = (struct smb2_sync_hdr *)buffer; struct smb2_create_rsp *rsp = (struct smb2_create_rsp *)buffer; struct cifs_tcon *tcon; - struct close_cancelled_open *cancelled; + int rc; if (sync_hdr->Command != SMB2_CREATE || sync_hdr->Status != STATUS_SUCCESS) return 0; - cancelled = kzalloc(sizeof(*cancelled), GFP_KERNEL); - if (!cancelled) - return -ENOMEM; - tcon = smb2_find_smb_tcon(server, sync_hdr->SessionId, sync_hdr->TreeId); - if (!tcon) { - kfree(cancelled); + if (!tcon) return -ENOENT; - } - cancelled->fid.persistent_fid = rsp->PersistentFileId; - cancelled->fid.volatile_fid = rsp->VolatileFileId; - cancelled->tcon = tcon; - INIT_WORK(&cancelled->work, smb2_cancelled_close_fid); - queue_work(cifsiod_wq, &cancelled->work); + rc = __smb2_handle_cancelled_close(tcon, rsp->PersistentFileId, + rsp->VolatileFileId); + if (rc) + cifs_put_tcon(tcon); - return 0; + return rc; } /** diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index acb70f67efc9..20f81e381a5b 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -2974,7 +2974,21 @@ int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid) { - return SMB2_close_flags(xid, tcon, persistent_fid, volatile_fid, 0); + int rc; + int tmp_rc; + + rc = SMB2_close_flags(xid, tcon, persistent_fid, volatile_fid, 0); + + /* retry close in a worker thread if this one is interrupted */ + if (rc == -EINTR) { + tmp_rc = smb2_handle_cancelled_close(tcon, persistent_fid, + volatile_fid); + if (tmp_rc) + cifs_dbg(VFS, "handle cancelled close fid 0x%llx returned error %d\n", + persistent_fid, tmp_rc); + } + + return rc; } int diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index 71b2930b8e0b..2a12a2fa38a2 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -212,6 +212,9 @@ extern int SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, extern int SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, const u64 persistent_fid, const u64 volatile_fid, const __u8 oplock_level); +extern int smb2_handle_cancelled_close(struct cifs_tcon *tcon, + __u64 persistent_fid, + __u64 volatile_fid); extern int smb2_handle_cancelled_mid(char *buffer, struct TCP_Server_Info *server); void smb2_cancelled_close_fid(struct work_struct *work); |