dlm: use more NOFS allocation

Change some GFP_KERNEL allocations to use either GFP_NOFS or
ls_allocation (when available) which the fs sets to GFP_NOFS.
The point is to prevent allocations from going back into the
cluster fs in places where that might lead to deadlock.

Signed-off-by: David Teigland <teigland@redhat.com>

diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c
index 858fba1..c4dfa1d 100644 (file)
--- a/fs/dlm/dir.c
+++ b/fs/dlm/dir.c
@@ -49,7 +49,8 @@ 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, GFP_KERNEL);
+               de = kzalloc(sizeof(struct dlm_direntry) + len,
+                            ls->ls_allocation);
        return de;
 }
 
@@ -211,7 +212,7 @@ int dlm_recover_directory(struct dlm_ls *ls)
 
        dlm_dir_clear(ls);
 
-       last_name = kmalloc(DLM_RESNAME_MAXLEN, GFP_KERNEL);
+       last_name = kmalloc(DLM_RESNAME_MAXLEN, ls->ls_allocation);
        if (!last_name)
                goto out;
 
@@ -322,7 +323,7 @@ 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, GFP_KERNEL);
+       de = kzalloc(sizeof(struct dlm_direntry) + namelen, ls->ls_allocation);
        if (!de)
                return -ENOMEM;
 

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 2559a97..cdb580a 100644 (file)
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -500,7 +500,7 @@ static void process_sctp_notification(struct connection *con,
                                return;
                        }
 
-                       new_con = nodeid2con(nodeid, GFP_KERNEL);
+                       new_con = nodeid2con(nodeid, GFP_NOFS);
                        if (!new_con)
                                return;
 
@@ -736,7 +736,7 @@ static int tcp_accept_from_sock(struct connection *con)
         *  the same time and the connections cross on the wire.
         *  In this case we store the incoming one in "othercon"
         */
-       newcon = nodeid2con(nodeid, GFP_KERNEL);
+       newcon = nodeid2con(nodeid, GFP_NOFS);
        if (!newcon) {
                result = -ENOMEM;
                goto accept_err;
@@ -746,7 +746,7 @@ static int tcp_accept_from_sock(struct connection *con)
                struct connection *othercon = newcon->othercon;
 
                if (!othercon) {
-                       othercon = kmem_cache_zalloc(con_cache, GFP_KERNEL);
+                       othercon = kmem_cache_zalloc(con_cache, GFP_NOFS);
                        if (!othercon) {
                                log_print("failed to allocate incoming socket");
                                mutex_unlock(&newcon->sock_mutex);

diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index 2afb770..b128775 100644 (file)
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -48,7 +48,7 @@ static int dlm_add_member(struct dlm_ls *ls, int nodeid)
        struct dlm_member *memb;
        int w, error;
 
-       memb = kzalloc(sizeof(struct dlm_member), GFP_KERNEL);
+       memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
        if (!memb)
                return -ENOMEM;
 
@@ -143,7 +143,7 @@ static void make_member_array(struct dlm_ls *ls)
 
        ls->ls_total_weight = total;
 
-       array = kmalloc(sizeof(int) * total, GFP_KERNEL);
+       array = kmalloc(sizeof(int) * total, ls->ls_allocation);
        if (!array)
                return;
 
@@ -226,7 +226,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)
                        continue;
                log_debug(ls, "new nodeid %d is a re-added member", rv->new[i]);
 
-               memb = kzalloc(sizeof(struct dlm_member), GFP_KERNEL);
+               memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
                if (!memb)
                        return -ENOMEM;
                memb->nodeid = rv->new[i];
@@ -341,7 +341,7 @@ int dlm_ls_start(struct dlm_ls *ls)
        int *ids = NULL, *new = NULL;
        int error, ids_count = 0, new_count = 0;
 
-       rv = kzalloc(sizeof(struct dlm_recover), GFP_KERNEL);
+       rv = kzalloc(sizeof(struct dlm_recover), ls->ls_allocation);
        if (!rv)
                return -ENOMEM;
 

diff --git a/fs/dlm/requestqueue.c b/fs/dlm/requestqueue.c
index daa4183..7a2307c 100644 (file)
--- a/fs/dlm/requestqueue.c
+++ b/fs/dlm/requestqueue.c
@@ -35,7 +35,7 @@ void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms)
        struct rq_entry *e;
        int length = ms->m_header.h_length - sizeof(struct dlm_message);
 
-       e = kmalloc(sizeof(struct rq_entry) + length, GFP_KERNEL);
+       e = kmalloc(sizeof(struct rq_entry) + length, ls->ls_allocation);
        if (!e) {
                log_print("dlm_add_requestqueue: out of memory len %d", length);
                return;