Merge branch 'sched/urgent' into sched/core, to merge fixes before applying new changes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

5 files changed, 17 insertions, 13 deletions

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 4fc3a3046174..26b3f952e6b1 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -981,7 +981,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
 	int error = 0;
 
 	state = (fl->fl_type == F_WRLCK) ? LM_ST_EXCLUSIVE : LM_ST_SHARED;
-	flags = (IS_SETLKW(cmd) ? 0 : LM_FLAG_TRY) | GL_EXACT | GL_NOCACHE;
+	flags = (IS_SETLKW(cmd) ? 0 : LM_FLAG_TRY) | GL_EXACT;
 
 	mutex_lock(&fp->f_fl_mutex);
 
@@ -991,7 +991,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl)
 			goto out;
 		flock_lock_file_wait(file,
 				     &(struct file_lock){.fl_type = F_UNLCK});
-		gfs2_glock_dq_wait(fl_gh);
+		gfs2_glock_dq(fl_gh);
 		gfs2_holder_reinit(state, flags, fl_gh);
 	} else {
 		error = gfs2_glock_get(GFS2_SB(&ip->i_inode), ip->i_no_addr,
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 770e16716d81..7f513b1ceb2c 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -731,14 +731,14 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
 		cachep = gfs2_glock_aspace_cachep;
 	else
 		cachep = gfs2_glock_cachep;
-	gl = kmem_cache_alloc(cachep, GFP_KERNEL);
+	gl = kmem_cache_alloc(cachep, GFP_NOFS);
 	if (!gl)
 		return -ENOMEM;
 
 	memset(&gl->gl_lksb, 0, sizeof(struct dlm_lksb));
 
 	if (glops->go_flags & GLOF_LVB) {
-		gl->gl_lksb.sb_lvbptr = kzalloc(GFS2_MIN_LVB_SIZE, GFP_KERNEL);
+		gl->gl_lksb.sb_lvbptr = kzalloc(GFS2_MIN_LVB_SIZE, GFP_NOFS);
 		if (!gl->gl_lksb.sb_lvbptr) {
 			kmem_cache_free(cachep, gl);
 			return -ENOMEM;
@@ -1383,12 +1383,16 @@ __acquires(&lru_lock)
 		gl = list_entry(list->next, struct gfs2_glock, gl_lru);
 		list_del_init(&gl->gl_lru);
 		if (!spin_trylock(&gl->gl_spin)) {
+add_back_to_lru:
 			list_add(&gl->gl_lru, &lru_list);
 			atomic_inc(&lru_count);
 			continue;
 		}
+		if (test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
+			spin_unlock(&gl->gl_spin);
+			goto add_back_to_lru;
+		}
 		clear_bit(GLF_LRU, &gl->gl_flags);
-		spin_unlock(&lru_lock);
 		gl->gl_lockref.count++;
 		if (demote_ok(gl))
 			handle_callback(gl, LM_ST_UNLOCKED, 0, false);
@@ -1396,7 +1400,7 @@ __acquires(&lru_lock)
 		if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
 			gl->gl_lockref.count--;
 		spin_unlock(&gl->gl_spin);
-		spin_lock(&lru_lock);
+		cond_resched_lock(&lru_lock);
 	}
 }
 
@@ -1421,7 +1425,7 @@ static long gfs2_scan_glock_lru(int nr)
 		gl = list_entry(lru_list.next, struct gfs2_glock, gl_lru);
 
 		/* Test for being demotable */
-		if (!test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
+		if (!test_bit(GLF_LOCK, &gl->gl_flags)) {
 			list_move(&gl->gl_lru, &dispose);
 			atomic_dec(&lru_count);
 			freed++;
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index fc1100781bbc..2ffc67dce87f 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -234,8 +234,8 @@ static void inode_go_sync(struct gfs2_glock *gl)
  * inode_go_inval - prepare a inode glock to be released
  * @gl: the glock
  * @flags:
- * 
- * Normally we invlidate everything, but if we are moving into
+ *
+ * Normally we invalidate everything, but if we are moving into
  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
  * can keep hold of the metadata, since it won't have changed.
  *
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 992ca5b1e045..641383a9c1bb 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -1030,8 +1030,8 @@ static int set_recover_size(struct gfs2_sbd *sdp, struct dlm_slot *slots,
 
 	new_size = old_size + RECOVER_SIZE_INC;
 
-	submit = kzalloc(new_size * sizeof(uint32_t), GFP_NOFS);
-	result = kzalloc(new_size * sizeof(uint32_t), GFP_NOFS);
+	submit = kcalloc(new_size, sizeof(uint32_t), GFP_NOFS);
+	result = kcalloc(new_size, sizeof(uint32_t), GFP_NOFS);
 	if (!submit || !result) {
 		kfree(submit);
 		kfree(result);
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index db629d1bd1bd..f4cb9c0d6bbd 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -337,7 +337,7 @@ static bool gfs2_unaligned_extlen(struct gfs2_rbm *rbm, u32 n_unaligned, u32 *le
 
 /**
  * gfs2_free_extlen - Return extent length of free blocks
- * @rbm: Starting position
+ * @rrbm: Starting position
  * @len: Max length to check
  *
  * Starting at the block specified by the rbm, see how many free blocks
@@ -2522,7 +2522,7 @@ void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state)
 
 /**
  * gfs2_rlist_free - free a resource group list
- * @list: the list of resource groups
+ * @rlist: the list of resource groups
  *
  */