xiaoxiang781216 commented on code in PR #15649:
URL: https://github.com/apache/nuttx/pull/15649#discussion_r1925159380
##########
drivers/bch/bchdev_driver.c:
##########
@@ -435,6 +435,15 @@ static int bch_ioctl(FAR struct file *filep, int cmd,
unsigned long arg)
break;
#endif
+ case BIOC_DISCARD:
+ {
+ /* Invalidate the sector so next read is from the device. */
+
+ bch->sector = (size_t)-1;
+ ret = OK;
Review Comment:
should we continue to the next level?
##########
drivers/bch/bchdev_driver.c:
##########
@@ -435,6 +435,15 @@ static int bch_ioctl(FAR struct file *filep, int cmd,
unsigned long arg)
break;
#endif
+ case BIOC_DISCARD:
Review Comment:
should we modify drivers/mtd/ftl.c?
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