From 02102744d364c1bca4a0da13c2a72656037f64eb Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 10 Nov 2021 03:15:29 -0600 Subject: [PATCH] smb3: do not setup the fscache_super_cookie until fsinfo initialized We were calling cifs_fscache_get_super_cookie after tcon but before we queried the info (QFS_Info) we need to initialize the cookie properly. Also includes an additional check suggested by Paulo to make sure we don't initialize super cookie twice. Suggested-by: David Howells Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French --- fs/cifs/connect.c | 8 ++++++-- fs/cifs/fscache.c | 8 ++++++++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 5c506f6..084605f 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2350,8 +2350,6 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb3_fs_context *ctx) list_add(&tcon->tcon_list, &ses->tcon_list); spin_unlock(&cifs_tcp_ses_lock); - cifs_fscache_get_super_cookie(tcon); - return tcon; out_fail: @@ -3003,6 +3001,12 @@ static int mount_get_conns(struct mount_ctx *mnt_ctx) cifs_dbg(VFS, "read only mount of RW share\n"); /* no need to log a RW mount of a typical RW share */ } + /* + * The cookie is initialized from volume info returned above. + * Inside cifs_fscache_get_super_cookie it checks + * that we do not get super cookie twice. + */ + cifs_fscache_get_super_cookie(tcon); } /* diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c index 8eedd20..7e409a3 100644 --- a/fs/cifs/fscache.c +++ b/fs/cifs/fscache.c @@ -87,6 +87,14 @@ void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon) char *sharename; struct cifs_fscache_super_auxdata auxdata; + /* + * Check if cookie was already initialized so don't reinitialize it. + * In the future, as we integrate with newer fscache features, + * we may want to instead add a check if cookie has changed + */ + if (tcon->fscache == NULL) + return; + sharename = extract_sharename(tcon->treeName); if (IS_ERR(sharename)) { cifs_dbg(FYI, "%s: couldn't extract sharename\n", __func__); -- 2.7.4