From 573c24c4af6664ffcd9aa7ba617a35fde2b95534 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Mon, 30 Nov 2009 16:34:43 -0600 Subject: dlm: always use GFP_NOFS Replace all GFP_KERNEL and ls_allocation with GFP_NOFS. ls_allocation would be GFP_KERNEL for userland lockspaces and GFP_NOFS for file system lockspaces. It was discovered that any lockspaces on the system can affect all others by triggering memory reclaim in the file system which could in turn call back into the dlm to acquire locks, deadlocking dlm threads that were shared by all lockspaces, like dlm_recv. Signed-off-by: David Teigland --- fs/dlm/dir.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'fs/dlm/dir.c') diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c index c4dfa1dcc86..7b84c1dbc82 100644 --- a/fs/dlm/dir.c +++ b/fs/dlm/dir.c @@ -49,8 +49,7 @@ static struct dlm_direntry *get_free_de(struct dlm_ls *ls, int len) spin_unlock(&ls->ls_recover_list_lock); if (!found) - de = kzalloc(sizeof(struct dlm_direntry) + len, - ls->ls_allocation); + de = kzalloc(sizeof(struct dlm_direntry) + len, GFP_NOFS); return de; } @@ -212,7 +211,7 @@ int dlm_recover_directory(struct dlm_ls *ls) dlm_dir_clear(ls); - last_name = kmalloc(DLM_RESNAME_MAXLEN, ls->ls_allocation); + last_name = kmalloc(DLM_RESNAME_MAXLEN, GFP_NOFS); if (!last_name) goto out; @@ -323,7 +322,7 @@ static int get_entry(struct dlm_ls *ls, int nodeid, char *name, if (namelen > DLM_RESNAME_MAXLEN) return -EINVAL; - de = kzalloc(sizeof(struct dlm_direntry) + namelen, ls->ls_allocation); + de = kzalloc(sizeof(struct dlm_direntry) + namelen, GFP_NOFS); if (!de) return -ENOMEM; -- cgit v1.2.3