michallenc commented on code in PR #16642:
URL: https://github.com/apache/nuttx/pull/16642#discussion_r2189460540
##########
drivers/mtd/ftl.c:
##########
@@ -478,6 +467,86 @@ static ssize_t ftl_read(FAR struct inode *inode, unsigned
char *buffer,
*
****************************************************************************/
+static int ftl_alloc_eblock(FAR struct ftl_struct_s *dev)
+{
+ if (dev->eblock == NULL)
+ {
+ /* Allocate one, in-memory erase block buffer */
+
+ dev->eblock = kmm_malloc(dev->geo.erasesize);
+ }
+
+ return dev->eblock != NULL ? OK : -ENOMEM;
+}
+
+/****************************************************************************
+ * Name: ftl_flush_direct
+ *
+ * Description: Write the specified number of sectors without cache
+ *
+ ****************************************************************************/
+
+static ssize_t ftl_flush_direct(FAR struct ftl_struct_s *dev,
+ FAR const uint8_t *buffer,
+ off_t startblock, size_t nblocks)
+{
+ size_t blocksize = dev->geo.blocksize;
+ off_t starteraseblock;
+ off_t offset;
+ ssize_t ret;
+ size_t count;
+
+ while (nblocks)
+ {
+ starteraseblock = startblock / dev->blkper;
+ offset = startblock & (dev->blkper - 1);
+ count = MIN(dev->blkper - offset, nblocks);
+
+ if (offset == 0 && dev->mtd->erase != NULL && !(dev->oflags & O_SYNC))
Review Comment:
My bad, the writes are in a while loop for each write block, thus this logic
is enough. :facepalm:
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