Merge remote-tracking branches 'asoc/topic/txx9', 'asoc/topic/wm8750', 'asoc/topic...

[cascardo/linux.git] / drivers / target / target_core_file.c

diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index c2aea09..d836de2 100644 (file)
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -621,7 +621,16 @@ fd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
        struct fd_prot fd_prot;
        sense_reason_t rc;
        int ret = 0;
-
+       /*
+        * We are currently limited by the number of iovecs (2048) per
+        * single vfs_[writev,readv] call.
+        */
+       if (cmd->data_length > FD_MAX_BYTES) {
+               pr_err("FILEIO: Not able to process I/O of %u bytes due to"
+                      "FD_MAX_BYTES: %u iovec count limitiation\n",
+                       cmd->data_length, FD_MAX_BYTES);
+               return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+       }
        /*
         * Call vectorized fileio functions to map struct scatterlist
         * physical memory addresses to struct iovec virtual memory.
@@ -959,7 +968,6 @@ static struct configfs_attribute *fileio_backend_dev_attrs[] = {
        &fileio_dev_attrib_hw_block_size.attr,
        &fileio_dev_attrib_block_size.attr,
        &fileio_dev_attrib_hw_max_sectors.attr,
-       &fileio_dev_attrib_fabric_max_sectors.attr,
        &fileio_dev_attrib_optimal_sectors.attr,
        &fileio_dev_attrib_hw_queue_depth.attr,
        &fileio_dev_attrib_queue_depth.attr,