From: Mark Fasheh <mark.fasheh@oracle.com>
Date: Wed, 9 Aug 2006 18:45:07 +0000 (-0700)
Subject: ocfs2: move nlink check in ocfs2_mknod()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a663e30513d7ecc77dd71d474e7646bf78c0ba62;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

ocfs2: move nlink check in ocfs2_mknod()

The dir nlink check in ocfs2_mknod() was being done outside of the cluster
lock, which means we could have been checking against a stale version of the
inode. Fix this by doing the check after the cluster lock instead.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
---

diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 0673862c8bdd..d8161a77c370 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -310,13 +310,6 @@ static int ocfs2_mknod(struct inode *dir,
 	/* get our super block */
 	osb = OCFS2_SB(dir->i_sb);
 
-	if (S_ISDIR(mode) && (dir->i_nlink >= OCFS2_LINK_MAX)) {
-		mlog(ML_ERROR, "inode %llu has i_nlink of %u\n",
-		     (unsigned long long)OCFS2_I(dir)->ip_blkno, dir->i_nlink);
-		status = -EMLINK;
-		goto leave;
-	}
-
 	handle = ocfs2_alloc_handle(osb);
 	if (handle == NULL) {
 		status = -ENOMEM;
@@ -331,6 +324,11 @@ static int ocfs2_mknod(struct inode *dir,
 		goto leave;
 	}
 
+	if (S_ISDIR(mode) && (dir->i_nlink >= OCFS2_LINK_MAX)) {
+		status = -EMLINK;
+		goto leave;
+	}
+
 	dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data;
 	if (!dirfe->i_links_count) {
 		/* can't make a file in a deleted directory. */