From 058daf4f6795fd23fcca41fe53151cdcbbd263ec Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sat, 12 Sep 2009 11:54:29 -0400 Subject: cifs: take read lock on GlobalSMBSes_lock in is_valid_oplock_break ...rather than a write lock. It doesn't change the list so a read lock should be sufficient. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/misc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index f2d508d..191e622 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -562,14 +562,14 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv) continue; cifs_stats_inc(&tcon->num_oplock_brks); - write_lock(&GlobalSMBSeslock); + read_lock(&GlobalSMBSeslock); list_for_each(tmp2, &tcon->openFileList) { netfile = list_entry(tmp2, struct cifsFileInfo, tlist); if (pSMB->Fid != netfile->netfid) continue; - write_unlock(&GlobalSMBSeslock); + read_unlock(&GlobalSMBSeslock); read_unlock(&cifs_tcp_ses_lock); cFYI(1, ("file id match, oplock break")); pCifsInode = CIFS_I(netfile->pInode); @@ -584,7 +584,7 @@ is_valid_oplock_break(struct smb_hdr *buf, struct TCP_Server_Info *srv) return true; } - write_unlock(&GlobalSMBSeslock); + read_unlock(&GlobalSMBSeslock); read_unlock(&cifs_tcp_ses_lock); cFYI(1, ("No matching file for oplock break")); return true; -- cgit v1.1