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-rw-r--r--fs/ext4/inode.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ab807963a614..282621f18c10 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2993,11 +2993,18 @@ static int ext4_nonda_switch(struct super_block *sb)
if (2 * free_blocks < 3 * dirty_blocks ||
free_blocks < (dirty_blocks + EXT4_FREEBLOCKS_WATERMARK)) {
/*
- * free block count is less that 150% of dirty blocks
- * or free blocks is less that watermark
+ * free block count is less than 150% of dirty blocks
+ * or free blocks is less than watermark
*/
return 1;
}
+ /*
+ * Even if we don't switch but are nearing capacity,
+ * start pushing delalloc when 1/2 of free blocks are dirty.
+ */
+ if (free_blocks < 2 * dirty_blocks)
+ writeback_inodes_sb_if_idle(sb);
+
return 0;
}