Merge branch 'linus' into x86/core

Conflicts:

	arch/x86/mm/ioremap.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

4 files changed, 21 insertions, 12 deletions

diff --git a/fs/exec.c b/fs/exec.c
index da94a6f05df3..fd9234379e8d 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -610,7 +610,7 @@ int setup_arg_pages(struct linux_binprm *bprm,
         bprm->exec -= stack_shift;
 
         down_write(&mm->mmap_sem);
-        vm_flags = vma->vm_flags;
+        vm_flags = VM_STACK_FLAGS;
 
         /*
          * Adjust stack execute permissions; explicitly enable for
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index efc015c6128a..44f87caf3683 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -606,7 +606,9 @@ static void dlm_init_lockres(struct dlm_ctxt *dlm,
 
         res->last_used = 0;
 
+        spin_lock(&dlm->spinlock);
         list_add_tail(&res->tracking, &dlm->tracking_list);
+        spin_unlock(&dlm->spinlock);
 
         memset(res->lvb, 0, DLM_LVB_LEN);
         memset(res->refmap, 0, sizeof(res->refmap));
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 394d25a131a5..80e20d9f2780 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -1554,8 +1554,8 @@ out:
  */
 int ocfs2_file_lock(struct file *file, int ex, int trylock)
 {
-        int ret, level = ex ? LKM_EXMODE : LKM_PRMODE;
-        unsigned int lkm_flags = trylock ? LKM_NOQUEUE : 0;
+        int ret, level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
+        unsigned int lkm_flags = trylock ? DLM_LKF_NOQUEUE : 0;
         unsigned long flags;
         struct ocfs2_file_private *fp = file->private_data;
         struct ocfs2_lock_res *lockres = &fp->fp_flock;
@@ -1582,7 +1582,7 @@ int ocfs2_file_lock(struct file *file, int ex, int trylock)
                  * Get the lock at NLMODE to start - that way we
                  * can cancel the upconvert request if need be.
                  */
-                ret = ocfs2_lock_create(osb, lockres, LKM_NLMODE, 0);
+                ret = ocfs2_lock_create(osb, lockres, DLM_LOCK_NL, 0);
                 if (ret < 0) {
                         mlog_errno(ret);
                         goto out;
@@ -1597,7 +1597,7 @@ int ocfs2_file_lock(struct file *file, int ex, int trylock)
         }
 
         lockres->l_action = OCFS2_AST_CONVERT;
-        lkm_flags |= LKM_CONVERT;
+        lkm_flags |= DLM_LKF_CONVERT;
         lockres->l_requested = level;
         lockres_or_flags(lockres, OCFS2_LOCK_BUSY);
 
@@ -1664,7 +1664,7 @@ void ocfs2_file_unlock(struct file *file)
         if (!(lockres->l_flags & OCFS2_LOCK_ATTACHED))
                 return;
 
-        if (lockres->l_level == LKM_NLMODE)
+        if (lockres->l_level == DLM_LOCK_NL)
                 return;
 
         mlog(0, "Unlock: \"%s\" flags: 0x%lx, level: %d, act: %d\n",
@@ -1678,11 +1678,11 @@ void ocfs2_file_unlock(struct file *file)
         lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);
         lockres->l_blocking = DLM_LOCK_EX;
 
-        gen = ocfs2_prepare_downconvert(lockres, LKM_NLMODE);
+        gen = ocfs2_prepare_downconvert(lockres, DLM_LOCK_NL);
         lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0);
         spin_unlock_irqrestore(&lockres->l_lock, flags);
 
-        ret = ocfs2_downconvert_lock(osb, lockres, LKM_NLMODE, 0, gen);
+        ret = ocfs2_downconvert_lock(osb, lockres, DLM_LOCK_NL, 0, gen);
         if (ret) {
                 mlog_errno(ret);
                 return;
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index afaee301b0ee..ad3d26ddfe31 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -2427,13 +2427,20 @@ restart:
         if (iclog->ic_size - iclog->ic_offset < 2*sizeof(xlog_op_header_t)) {
                 xlog_state_switch_iclogs(log, iclog, iclog->ic_size);
 
-                /* If I'm the only one writing to this iclog, sync it to disk */
-                if (atomic_read(&iclog->ic_refcnt) == 1) {
+                /*
+                 * If I'm the only one writing to this iclog, sync it to disk.
+                 * We need to do an atomic compare and decrement here to avoid
+                 * racing with concurrent atomic_dec_and_lock() calls in
+                 * xlog_state_release_iclog() when there is more than one
+                 * reference to the iclog.
+                 */
+                if (!atomic_add_unless(&iclog->ic_refcnt, -1, 1)) {
+                        /* we are the only one */
                         spin_unlock(&log->l_icloglock);
-                        if ((error = xlog_state_release_iclog(log, iclog)))
+                        error = xlog_state_release_iclog(log, iclog);
+                        if (error)
                                 return error;
                 } else {
-                        atomic_dec(&iclog->ic_refcnt);
                         spin_unlock(&log->l_icloglock);
                 }
                 goto restart;