From: Matthew L. Creech <mlcreech@gmail.com>
Date: Fri, 6 May 2011 22:58:23 +0000 (-0400)
Subject: UBIFS: fix-up free space on mount if flag is set
X-Git-Tag: v3.0-rc1~317^2~6
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=9d510db423303b4f3555074dd7bdd0d692e432a4;p=~emulex%2Finfiniband.git

UBIFS: fix-up free space on mount if flag is set

If a UBIFS filesystem is being mounted read-write, or is being remounted
from read-only to read-write, check for the "space_fixup" flag and fix
all LEBs containing empty space if necessary.

Artem: tweaked the patch a bit

Signed-off-by: Matthew L. Creech <mlcreech@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
---

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 575ea8353d0..6db0bdaa9f7 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1396,6 +1396,12 @@ static int mount_ubifs(struct ubifs_info *c)
 	} else
 		ubifs_assert(c->lst.taken_empty_lebs > 0);
 
+	if (!c->ro_mount && c->space_fixup) {
+		err = ubifs_fixup_free_space(c);
+		if (err)
+			goto out_infos;
+	}
+
 	err = dbg_check_filesystem(c);
 	if (err)
 		goto out_infos;
@@ -1686,6 +1692,13 @@ static int ubifs_remount_rw(struct ubifs_info *c)
 		 */
 		err = dbg_check_space_info(c);
 	}
+
+	if (c->space_fixup) {
+		err = ubifs_fixup_free_space(c);
+		if (err)
+			goto out;
+	}
+
 	mutex_unlock(&c->umount_mutex);
 	return err;