mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 00:11:13 +00:00
37 lines
894 B
Diff
37 lines
894 B
Diff
--- a/lib/ext2fs/unix_io.c
|
|
+++ b/lib/ext2fs/unix_io.c
|
|
@@ -428,6 +428,7 @@ static errcode_t unix_open(const char *n
|
|
struct unix_private_data *data = NULL;
|
|
errcode_t retval;
|
|
int open_flags;
|
|
+ int f_nocache = 0;
|
|
struct stat st;
|
|
#ifdef __linux__
|
|
struct utsname ut;
|
|
@@ -464,7 +465,11 @@ static errcode_t unix_open(const char *n
|
|
if (flags & IO_FLAG_EXCLUSIVE)
|
|
open_flags |= O_EXCL;
|
|
if (flags & IO_FLAG_DIRECT_IO)
|
|
+#if !defined(O_DIRECT) && defined(F_NOCACHE)
|
|
+ f_nocache = F_NOCACHE;
|
|
+#else
|
|
open_flags |= O_DIRECT;
|
|
+#endif
|
|
data->flags = flags;
|
|
|
|
#ifdef HAVE_OPEN64
|
|
@@ -477,6 +482,13 @@ static errcode_t unix_open(const char *n
|
|
goto cleanup;
|
|
}
|
|
|
|
+ if (f_nocache) {
|
|
+ if (fcntl(data->dev, f_nocache, 1) < 0) {
|
|
+ retval = errno;
|
|
+ goto cleanup;
|
|
+ }
|
|
+ }
|
|
+
|
|
#ifdef BLKSSZGET
|
|
if (flags & IO_FLAG_DIRECT_IO) {
|
|
if (ioctl(data->dev, BLKSSZGET, &data->align) != 0)
|