A filesystem with errors is not allowed to being resized, otherwise, it is
easy to destroy the filesystem.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx>
---
fs/ext4/resize.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
v1->v2:
nothing changed.
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 0213f63..53d9795 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -23,6 +23,16 @@ int ext4_resize_begin(struct super_block *sb)
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
+ /*
+ * We are not allowed to do online-resizing on a filesystem mounted
+ * with error, because it can destroy the filesystem easily.
+ */
+ if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
+ ext4_warning(sb, "There are errors in the filesystem, "
+ "so online resizing is not allowed\n");
+ return -EPERM;
+ }
+
if (test_and_set_bit_lock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags))
ret = -EBUSY;
--
1.7.5.1
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
