diff options
| author | Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> | 2010-05-06 09:10:53 +0200 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2010-09-02 22:43:43 -0600 |
| commit | ba408f579890ce60640d188665efddd6b4e4458d (patch) | |
| tree | 50fe74e76ceb2c06b7bb3a746e23cbea37510606 /fs | |
| parent | b4bd65c36a2c0c8bd39dff755eb9a135eb186a30 (diff) | |
fs fix to solve cache coherence issues with bounce buffers and eMMC driver.
On 05/05/2010 08:19 AM, Rabin VINCENT wrote:
> This is for I$-D$ coherence issues when bounce buffers are used
> for the MMC driver and code is executed from a file system on
> eMMC.
>
> IMO a better fix is to either change flush_kernel_dcache_page()
> to flush the D$ even on VIPT non-aliasing caches or to replace
> the flush_kernel_dcache_page() in lib/scatterlist.c with
> flush_dcache_page().
>
> BR,
> Rabin
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/mpage.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/mpage.c b/fs/mpage.c index fd56ca2ea55..ea5b3e685d5 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -52,6 +52,8 @@ static void mpage_end_io_read(struct bio *bio, int err) prefetchw(&bvec->bv_page->flags); if (uptodate) { + /* FIXME: fix to solve cache coherence issues. */ + flush_dcache_page(page); SetPageUptodate(page); } else { ClearPageUptodate(page); |