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-rw-r--r--fs/ext2/super.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 1388802b7803..f9cb54a585ce 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1105,9 +1105,30 @@ failed_sbi:
return ret;
}
+static void ext2_clear_super_error(struct super_block *sb)
+{
+ struct buffer_head *sbh = EXT2_SB(sb)->s_sbh;
+
+ if (buffer_write_io_error(sbh)) {
+ /*
+ * Oh, dear. A previous attempt to write the
+ * superblock failed. This could happen because the
+ * USB device was yanked out. Or it could happen to
+ * be a transient write error and maybe the block will
+ * be remapped. Nothing we can do but to retry the
+ * write and hope for the best.
+ */
+ printk(KERN_ERR "EXT2-fs: %s previous I/O error to "
+ "superblock detected", sb->s_id);
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
+}
+
static void ext2_commit_super (struct super_block * sb,
struct ext2_super_block * es)
{
+ ext2_clear_super_error(sb);
es->s_wtime = cpu_to_le32(get_seconds());
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
sb->s_dirt = 0;
@@ -1115,6 +1136,7 @@ static void ext2_commit_super (struct super_block * sb,
static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es)
{
+ ext2_clear_super_error(sb);
es->s_free_blocks_count = cpu_to_le32(ext2_count_free_blocks(sb));
es->s_free_inodes_count = cpu_to_le32(ext2_count_free_inodes(sb));
es->s_wtime = cpu_to_le32(get_seconds());