[GFS2] fix GFP_KERNEL misuses

There are several places where GFP_KERNEL allocations happen under a glock,
which will result in hangs if we're under memory pressure and go to re-enter the
fs in order to flush stuff out.  This patch changes the culprits to GFS_NOFS to
keep this problem from happening.  Thank you,

Signed-off-by: Josef Bacik <jbacik@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

2 files changed, 3 insertions, 3 deletions

diff --git a/fs/gfs2/locking/dlm/lock.c b/fs/gfs2/locking/dlm/lock.c
index 53a6ab3c0919..cf7ea8abec87 100644
--- a/fs/gfs2/locking/dlm/lock.c
+++ b/fs/gfs2/locking/dlm/lock.c
@@ -165,7 +165,7 @@ static int gdlm_create_lp(struct gdlm_ls *ls, struct lm_lockname *name,
 {
         struct gdlm_lock *lp;
 
-        lp = kzalloc(sizeof(struct gdlm_lock), GFP_KERNEL);
+        lp = kzalloc(sizeof(struct gdlm_lock), GFP_NOFS);
         if (!lp)
                 return -ENOMEM;
 
@@ -383,7 +383,7 @@ static int gdlm_add_lvb(struct gdlm_lock *lp)
 {
         char *lvb;
 
-        lvb = kzalloc(GDLM_LVB_SIZE, GFP_KERNEL);
+        lvb = kzalloc(GDLM_LVB_SIZE, GFP_NOFS);
         if (!lvb)
                 return -ENOMEM;
 
diff --git a/fs/gfs2/locking/nolock/main.c b/fs/gfs2/locking/nolock/main.c
index d3b8ce6fbbe3..284a5ece8d94 100644
--- a/fs/gfs2/locking/nolock/main.c
+++ b/fs/gfs2/locking/nolock/main.c
@@ -140,7 +140,7 @@ static int nolock_hold_lvb(void *lock, char **lvbp)
         struct nolock_lockspace *nl = lock;
         int error = 0;
 
-        *lvbp = kzalloc(nl->nl_lvb_size, GFP_KERNEL);
+        *lvbp = kzalloc(nl->nl_lvb_size, GFP_NOFS);
         if (!*lvbp)
                 error = -ENOMEM;