| 1 | --- a/lib/ext2fs/unix_io.c |
| 2 | +++ b/lib/ext2fs/unix_io.c |
| 3 | @@ -428,6 +428,7 @@ static errcode_t unix_open(const char *n |
| 4 | struct unix_private_data *data = NULL; |
| 5 | errcode_t retval; |
| 6 | int open_flags; |
| 7 | + int f_nocache = 0; |
| 8 | struct stat st; |
| 9 | #ifdef __linux__ |
| 10 | struct utsname ut; |
| 11 | @@ -464,7 +465,11 @@ static errcode_t unix_open(const char *n |
| 12 | if (flags & IO_FLAG_EXCLUSIVE) |
| 13 | open_flags |= O_EXCL; |
| 14 | if (flags & IO_FLAG_DIRECT_IO) |
| 15 | +#if !defined(O_DIRECT) && defined(F_NOCACHE) |
| 16 | + f_nocache = F_NOCACHE; |
| 17 | +#else |
| 18 | open_flags |= O_DIRECT; |
| 19 | +#endif |
| 20 | data->flags = flags; |
| 21 | |
| 22 | #ifdef HAVE_OPEN64 |
| 23 | @@ -477,6 +482,13 @@ static errcode_t unix_open(const char *n |
| 24 | goto cleanup; |
| 25 | } |
| 26 | |
| 27 | + if (f_nocache) { |
| 28 | + if (fcntl(data->dev, f_nocache, 1) < 0) { |
| 29 | + retval = errno; |
| 30 | + goto cleanup; |
| 31 | + } |
| 32 | + } |
| 33 | + |
| 34 | #ifdef BLKSSZGET |
| 35 | if (flags & IO_FLAG_DIRECT_IO) { |
| 36 | if (ioctl(data->dev, BLKSSZGET, &data->align) != 0) |
| 37 | |
