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-rw-r--r--fs/ext4/inode.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index a533a18de98e..25f809dc45a3 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -346,6 +346,15 @@ void ext4_da_update_reserve_space(struct inode *inode,
used = ei->i_reserved_data_blocks;
}
+ if (unlikely(ei->i_allocated_meta_blocks > ei->i_reserved_meta_blocks)) {
+ ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, allocated %d "
+ "with only %d reserved metadata blocks\n", __func__,
+ inode->i_ino, ei->i_allocated_meta_blocks,
+ ei->i_reserved_meta_blocks);
+ WARN_ON(1);
+ ei->i_allocated_meta_blocks = ei->i_reserved_meta_blocks;
+ }
+
/* Update per-inode reservations */
ei->i_reserved_data_blocks -= used;
ei->i_reserved_meta_blocks -= ei->i_allocated_meta_blocks;
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