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| author | Jeff Layton <jlayton@redhat.com> | 2011-01-11 07:24:02 -0500 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2011-01-19 17:52:38 +0000 |
| commit | 8097531a5cb55c6472118da094dc88caf9be66ac (patch) | |
| tree | 77707f0bc5fe63e08844426ffe878a0191f4faef /fs | |
| parent | c5797a945cac4c470f0113fc839c521aab0d799d (diff) | |
| download | linux-stable-8097531a5cb55c6472118da094dc88caf9be66ac.tar.gz linux-stable-8097531a5cb55c6472118da094dc88caf9be66ac.tar.bz2 linux-stable-8097531a5cb55c6472118da094dc88caf9be66ac.zip | |
cifs: clean up accesses to midCount
It's an atomic_t and the code accesses the "counter" field in it directly
instead of using atomic_read(). It also is sometimes accessed under a
spinlock and sometimes not. Move it out of the spinlock since we don't need
belt-and-suspenders for something that's just informational.
Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de>
Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/cifs_debug.c | 2 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 2 | ||||
| -rw-r--r-- | fs/cifs/transport.c | 6 |
3 files changed, 5 insertions, 5 deletions
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index ede98300a8cd..e2d0d5d455fa 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -331,7 +331,7 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v) atomic_read(&totSmBufAllocCount)); #endif /* CONFIG_CIFS_STATS2 */ - seq_printf(m, "Operations (MIDs): %d\n", midCount.counter); + seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount)); seq_printf(m, "\n%d session %d share reconnects\n", tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 75b538f50b12..465ecad6d7cc 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -628,7 +628,7 @@ multi_t2_fnd: } else if (!is_valid_oplock_break(smb_buffer, server) && !isMultiRsp) { cERROR(1, "No task to wake, unknown frame received! " - "NumMids %d", midCount.counter); + "NumMids %d", atomic_read(&midCount)); cifs_dump_mem("Received Data is: ", (char *)smb_buffer, sizeof(struct smb_hdr)); #ifdef CONFIG_CIFS_DEBUG2 diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 9a14f77e0ab2..b9eb0cffa003 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -61,10 +61,10 @@ AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server) temp->tsk = current; } - spin_lock(&GlobalMid_Lock); - list_add_tail(&temp->qhead, &server->pending_mid_q); atomic_inc(&midCount); temp->midState = MID_REQUEST_ALLOCATED; + spin_lock(&GlobalMid_Lock); + list_add_tail(&temp->qhead, &server->pending_mid_q); spin_unlock(&GlobalMid_Lock); return temp; } @@ -78,8 +78,8 @@ DeleteMidQEntry(struct mid_q_entry *midEntry) spin_lock(&GlobalMid_Lock); midEntry->midState = MID_FREE; list_del(&midEntry->qhead); - atomic_dec(&midCount); spin_unlock(&GlobalMid_Lock); + atomic_dec(&midCount); if (midEntry->largeBuf) cifs_buf_release(midEntry->resp_buf); else |