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authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2012-08-23 10:10:07 +0300
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-09-29 14:58:42 +0100
commita445f784ae5558a3da680aa6b39ed53c95a551c1 (patch)
treeacb2d42923d439793c4e37b42aaee217bc866893 /fs/jffs2
parentb05a1187bbf35035300313987cbd22e362d71dc6 (diff)
downloadlinux-a445f784ae5558a3da680aa6b39ed53c95a551c1.tar.gz
JFFS2: fix unmount regression
This patch fixes regression introduced by "8bdc81c jffs2: get rid of jffs2_sync_super". We submit a delayed work in order to make sure the write-buffer is synchronized at some point. But we do not flush it when we unmount, which causes an oops when we unmount the file-system and then the delayed work is executed. This patch fixes the issue by adding a "cancel_delayed_work_sync()" infocation in the '->sync_fs()' handler. This will make sure the delayed work is canceled on sync, unmount and re-mount. And because VFS always callse 'sync_fs()' before unmounting or remounting, this fixes the issue. Reported-by: Ludovic Desroches <ludovic.desroches@atmel.com> Cc: stable@vger.kernel.org [3.5+] Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'fs/jffs2')
-rw-r--r--fs/jffs2/super.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 61ea41389f9..1224d6b48e7 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -100,6 +100,10 @@ static int jffs2_sync_fs(struct super_block *sb, int wait)
{
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
+ cancel_delayed_work_sync(&c->wbuf_dwork);
+#endif
+
mutex_lock(&c->alloc_sem);
jffs2_flush_wbuf_pad(c);
mutex_unlock(&c->alloc_sem);