mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
37 lines
894 B
Diff
37 lines
894 B
Diff
--- a/lib/ext2fs/unix_io.c
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+++ b/lib/ext2fs/unix_io.c
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@@ -428,6 +428,7 @@ static errcode_t unix_open(const char *n
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struct unix_private_data *data = NULL;
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errcode_t retval;
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int open_flags;
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+ int f_nocache = 0;
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struct stat st;
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#ifdef __linux__
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struct utsname ut;
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@@ -464,7 +465,11 @@ static errcode_t unix_open(const char *n
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if (flags & IO_FLAG_EXCLUSIVE)
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open_flags |= O_EXCL;
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if (flags & IO_FLAG_DIRECT_IO)
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+#if !defined(O_DIRECT) && defined(F_NOCACHE)
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+ f_nocache = F_NOCACHE;
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+#else
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open_flags |= O_DIRECT;
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+#endif
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data->flags = flags;
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#ifdef HAVE_OPEN64
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@@ -477,6 +482,13 @@ static errcode_t unix_open(const char *n
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goto cleanup;
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}
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+ if (f_nocache) {
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+ if (fcntl(data->dev, f_nocache, 1) < 0) {
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+ retval = errno;
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+ goto cleanup;
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+ }
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+ }
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+
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#ifdef BLKSSZGET
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if (flags & IO_FLAG_DIRECT_IO) {
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if (ioctl(data->dev, BLKSSZGET, &data->align) != 0)
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