ocfs2: use GFP_NOFS in some dlm operations

Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

fs/ocfs2/dlm/dlmfs.c

@@ -116,7 +116,7 @@ static int dlmfs_file_open(struct inode *inode,
 	 * doesn't make sense for LVB writes. */
 	file->f_flags &= ~O_APPEND;
 
-	fp = kmalloc(sizeof(*fp), GFP_KERNEL);
+	fp = kmalloc(sizeof(*fp), GFP_NOFS);
 	if (!fp) {
 		status = -ENOMEM;
 		goto bail;
@@ -196,7 +196,7 @@ static ssize_t dlmfs_file_read(struct file *filp,
 	else
 		readlen = count - *ppos;
 
-	lvb_buf = kmalloc(readlen, GFP_KERNEL);
+	lvb_buf = kmalloc(readlen, GFP_NOFS);
 	if (!lvb_buf)
 		return -ENOMEM;
 
@@ -240,7 +240,7 @@ static ssize_t dlmfs_file_write(struct file *filp,
 	else
 		writelen = count - *ppos;
 
-	lvb_buf = kmalloc(writelen, GFP_KERNEL);
+	lvb_buf = kmalloc(writelen, GFP_NOFS);
 	if (!lvb_buf)
 		return -ENOMEM;
 

fs/ocfs2/dlm/dlmlock.c

@@ -408,13 +408,13 @@ struct dlm_lock * dlm_new_lock(int type, u8 node, u64 cookie,
 	struct dlm_lock *lock;
 	int kernel_allocated = 0;
 
-	lock = kcalloc(1, sizeof(*lock), GFP_KERNEL);
+	lock = kcalloc(1, sizeof(*lock), GFP_NOFS);
 	if (!lock)
 		return NULL;
 
 	if (!lksb) {
 		/* zero memory only if kernel-allocated */
-		lksb = kcalloc(1, sizeof(*lksb), GFP_KERNEL);
+		lksb = kcalloc(1, sizeof(*lksb), GFP_NOFS);
 		if (!lksb) {
 			kfree(lock);
 			return NULL;

fs/ocfs2/dlm/dlmmaster.c

@@ -709,11 +709,11 @@ struct dlm_lock_resource *dlm_new_lockres(struct dlm_ctxt *dlm,
 {
 	struct dlm_lock_resource *res;
 
-	res = kmalloc(sizeof(struct dlm_lock_resource), GFP_KERNEL);
+	res = kmalloc(sizeof(struct dlm_lock_resource), GFP_NOFS);
 	if (!res)
 		return NULL;
 
-	res->lockname.name = kmalloc(namelen, GFP_KERNEL);
+	res->lockname.name = kmalloc(namelen, GFP_NOFS);
 	if (!res->lockname.name) {
 		kfree(res);
 		return NULL;
@@ -777,7 +777,7 @@ lookup:
 		mlog(0, "allocating a new resource\n");
 		/* nothing found and we need to allocate one. */
 		alloc_mle = (struct dlm_master_list_entry *)
-			kmem_cache_alloc(dlm_mle_cache, GFP_KERNEL);
+			kmem_cache_alloc(dlm_mle_cache, GFP_NOFS);
 		if (!alloc_mle)
 			goto leave;
 		res = dlm_new_lockres(dlm, lockid, namelen);
@@ -1532,7 +1532,7 @@ way_up_top:
 			spin_unlock(&dlm->spinlock);
 
 			mle = (struct dlm_master_list_entry *)
-				kmem_cache_alloc(dlm_mle_cache, GFP_KERNEL);
+				kmem_cache_alloc(dlm_mle_cache, GFP_NOFS);
 			if (!mle) {
 				response = DLM_MASTER_RESP_ERROR;
 				mlog_errno(-ENOMEM);
@@ -1940,7 +1940,7 @@ int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,
 			       int ignore_higher, u8 request_from, u32 flags)
 {
 	struct dlm_work_item *item;
-	item = kcalloc(1, sizeof(*item), GFP_KERNEL);
+	item = kcalloc(1, sizeof(*item), GFP_NOFS);
 	if (!item)
 		return -ENOMEM;
 
@@ -2175,14 +2175,14 @@ int dlm_migrate_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
 	 */
 
 	ret = -ENOMEM;
-	mres = (struct dlm_migratable_lockres *) __get_free_page(GFP_KERNEL);
+	mres = (struct dlm_migratable_lockres *) __get_free_page(GFP_NOFS);
 	if (!mres) {
 		mlog_errno(ret);
 		goto leave;
 	}
 
 	mle = (struct dlm_master_list_entry *) kmem_cache_alloc(dlm_mle_cache,
-								GFP_KERNEL);
+								GFP_NOFS);
 	if (!mle) {
 		mlog_errno(ret);
 		goto leave;
@@ -2639,7 +2639,7 @@ int dlm_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data)
 
 	/* preallocate.. if this fails, abort */
 	mle = (struct dlm_master_list_entry *) kmem_cache_alloc(dlm_mle_cache,
-							 GFP_KERNEL);
+							 GFP_NOFS);
 
 	if (!mle) {
 		ret = -ENOMEM;

fs/ocfs2/dlm/dlmrecovery.c

@@ -737,7 +737,7 @@ static int dlm_init_recovery_area(struct dlm_ctxt *dlm, u8 dead_node)
 		}
 		BUG_ON(num == dead_node);
 
-		ndata = kcalloc(1, sizeof(*ndata), GFP_KERNEL);
+		ndata = kcalloc(1, sizeof(*ndata), GFP_NOFS);
 		if (!ndata) {
 			dlm_destroy_recovery_area(dlm, dead_node);
 			return -ENOMEM;
@@ -822,14 +822,14 @@ int dlm_request_all_locks_handler(struct o2net_msg *msg, u32 len, void *data)
 	}
 	BUG_ON(lr->dead_node != dlm->reco.dead_node);
 
-	item = kcalloc(1, sizeof(*item), GFP_KERNEL);
+	item = kcalloc(1, sizeof(*item), GFP_NOFS);
 	if (!item) {
 		dlm_put(dlm);
 		return -ENOMEM;
 	}
 
 	/* this will get freed by dlm_request_all_locks_worker */
-	buf = (char *) __get_free_page(GFP_KERNEL);
+	buf = (char *) __get_free_page(GFP_NOFS);
 	if (!buf) {
 		kfree(item);
 		dlm_put(dlm);
@@ -1302,8 +1302,8 @@ int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data)
 		mlog(0, "all done flag.  all lockres data received!\n");
 
 	ret = -ENOMEM;
-	buf = kmalloc(be16_to_cpu(msg->data_len), GFP_KERNEL);
-	item = kcalloc(1, sizeof(*item), GFP_KERNEL);
+	buf = kmalloc(be16_to_cpu(msg->data_len), GFP_NOFS);
+	item = kcalloc(1, sizeof(*item), GFP_NOFS);
 	if (!buf || !item)
 		goto leave;
 

fs/ocfs2/dlm/userdlm.c

@@ -672,7 +672,7 @@ struct dlm_ctxt *user_dlm_register_context(struct qstr *name)
 	u32 dlm_key;
 	char *domain;
 
-	domain = kmalloc(name->len + 1, GFP_KERNEL);
+	domain = kmalloc(name->len + 1, GFP_NOFS);
 	if (!domain) {
 		mlog_errno(-ENOMEM);
 		return ERR_PTR(-ENOMEM);