diff --git a/Documentation/admin-guide/blockdev/zram.rst b/Documentation/admin-guide/blockdev/zram.rst
index 678d70d6e1c3..714a5171bfc0 100644
--- a/Documentation/admin-guide/blockdev/zram.rst
+++ b/Documentation/admin-guide/blockdev/zram.rst
@@ -47,6 +47,8 @@ The list of possible return codes:
 -ENOMEM	  zram was not able to allocate enough memory to fulfil your
 	  needs.
 -EINVAL	  invalid input has been provided.
+-EAGAIN	  re-try operation later (e.g. when attempting to run recompress
+	  and writeback simultaneously).
 ========  =============================================================
 
 If you use 'echo', the returned value is set by the 'echo' utility,
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d61750c1c5b5..37a284f709ba 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -627,6 +627,12 @@ static ssize_t writeback_store(struct device *dev,
 		goto release_init_lock;
 	}
 
+	/* Do not permit concurrent post-processing actions. */
+	if (atomic_xchg(&zram->pp_in_progress, 1)) {
+		up_read(&zram->init_lock);
+		return -EAGAIN;
+	}
+
 	if (!zram->backing_dev) {
 		ret = -ENODEV;
 		goto release_init_lock;
@@ -753,6 +759,7 @@ static ssize_t writeback_store(struct device *dev,
 		free_block_bdev(zram, blk_idx);
 	__free_page(page);
 release_init_lock:
+	atomic_set(&zram->pp_in_progress, 0);
 	up_read(&zram->init_lock);
 
 	return ret;
@@ -1883,6 +1890,12 @@ static ssize_t recompress_store(struct device *dev,
 		goto release_init_lock;
 	}
 
+	/* Do not permit concurrent post-processing actions. */
+	if (atomic_xchg(&zram->pp_in_progress, 1)) {
+		up_read(&zram->init_lock);
+		return -EAGAIN;
+	}
+
 	if (algo) {
 		bool found = false;
 
@@ -1950,6 +1963,7 @@ static ssize_t recompress_store(struct device *dev,
 	__free_page(page);
 
 release_init_lock:
+	atomic_set(&zram->pp_in_progress, 0);
 	up_read(&zram->init_lock);
 	return ret;
 }
@@ -2146,6 +2160,7 @@ static void zram_reset_device(struct zram *zram)
 	zram->disksize = 0;
 	zram_destroy_comps(zram);
 	memset(&zram->stats, 0, sizeof(zram->stats));
+	atomic_set(&zram->pp_in_progress, 0);
 	reset_bdev(zram);
 
 	comp_algorithm_set(zram, ZRAM_PRIMARY_COMP, default_compressor);
@@ -2383,6 +2398,7 @@ static int zram_add(void)
 	zram->disk->fops = &zram_devops;
 	zram->disk->private_data = zram;
 	snprintf(zram->disk->disk_name, 16, "zram%d", device_id);
+	atomic_set(&zram->pp_in_progress, 0);
 
 	/* Actual capacity set using sysfs (/sys/block/zram<id>/disksize */
 	set_capacity(zram->disk, 0);
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index 914cb6629969..73a9d47d76ba 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -140,5 +140,6 @@ struct zram {
 #ifdef CONFIG_ZRAM_MEMORY_TRACKING
 	struct dentry *debugfs_dir;
 #endif
+	atomic_t pp_in_progress;
 };
 #endif