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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2016-04-02 14:36:10 +0200 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2016-06-26 18:22:23 +0200 |
| commit | bf32177a1df123aa9b33c105d8895c81be81167a (patch) | |
| tree | 9e9bfd212c7bdd6205697dcb8254a928a2000d5c /target/linux/generic/patches-4.4/041-mtd-bcm47xxpart-don-t-fail-because-of-bit-flips.patch | |
| parent | 2abb02419d3c79d3ee8e732bccfd96a7fc959347 (diff) | |
| download | upstream-bf32177a1df123aa9b33c105d8895c81be81167a.tar.gz upstream-bf32177a1df123aa9b33c105d8895c81be81167a.tar.bz2 upstream-bf32177a1df123aa9b33c105d8895c81be81167a.zip | |
kernel: remove full cache flush in fuse_copy_do() for MIPS
This patch was introduced in commit r16412 for the brcm47xx target only
and then moved to generic in commit r32395. It was initially added
because of ticket #5186 and should fix some problems with fuse file
systems and MIPS caches. The commit comment in r32395 says that this a
generic problem in MIPS CPUs, but does not name any specifics about
that. There was a fix added to kernel 2.6.21 in commit commit
7575a49f20 "[MIPS] Implement flush_anon_page()." that should fix this
problem, but that was already available before both commits were done
to OpenWrt.
I just tested fuse with ntfs.3g without this patch on a BCM4704
(BMIPS3300 V0.6) SoC and haven't seen any problems. Someone reported
that removing this patch improves some fuse operations by 5 times on
some modern MIPS cores.
My test was only a simple "dd if=/dev/zero of=/mnt/zero bs=5000" to an
USB stick.
This patch removes the patch to OpenWrt, because I assume that it is
not needed any more and Felix, the orginal author, also thinks so.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'target/linux/generic/patches-4.4/041-mtd-bcm47xxpart-don-t-fail-because-of-bit-flips.patch')
0 files changed, 0 insertions, 0 deletions