1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index fe8d77ebec13..9d5306bad117 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -144,6 +144,17 @@ struct mtd_info {
          */
         uint32_t writesize;
 
+        /*
+         * Size of the write buffer used by the MTD. MTD devices having a write
+         * buffer can write multiple writesize chunks at a time. E.g. while
+         * writing 4 * writesize bytes to a device with 2 * writesize bytes
+         * buffer the MTD driver can (but doesn't have to) do 2 writesize
+         * operations, but not 4. Currently, all NANDs have writebufsize
+         * equivalent to writesize (NAND page size). Some NOR flashes do have
+         * writebufsize greater than writesize.
+         */
+        uint32_t writebufsize;
+
         uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         uint32_t oobavail;  // Available OOB bytes per block