boot/nxboot/loader/flash.c: open partition with O_DIRECT flag

michallenc · cederom · commit beacf792faad · 2025-07-28T18:21:46.000+02:00
There is no need to use buffers in a bootloader. We expect a sequential
access, therefore we just need to erase the erase page before writing
to it for the first time, which is something FTL layer already takes
care of.

Signed-off-by: Michal Lenc &lt;michallenc@seznam.cz&gt;
diff --git a/boot/nxboot/loader/flash.c b/boot/nxboot/loader/flash.c
@@ -64,7 +64,7 @@ int flash_partition_open(const char *path)
 {
   int fd;
 
-  fd = open(path, O_RDWR);
+  fd = open(path, O_RDWR | O_DIRECT);
   if (fd < 0)
     {
       syslog(LOG_ERR, "Could not open %s partition: %s\n",

Original file line number	Diff line number	Diff line change
`@@ -64,7 +64,7 @@ int flash_partition_open(const char *path)`
`64`	`64`	`{`
`65`	`65`	`int fd;`
`66`	`66`
`67`		`- fd = open(path, O_RDWR);`
	`67`	`+ fd = open(path, O_RDWR \| O_DIRECT);`
`68`	`68`	`if (fd < 0)`
`69`	`69`	`{`
`70`	`70`	`syslog(LOG_ERR, "Could not open %s partition: %s\n",`