Re: [PATCH v1 2/2] romfs: address performance regression since v3.10

2020-07-09 Thread Sven Van Asbroeck
Hello Al, You are the closest I could find to a romfs maintainer. get_maintainer.pl doesn't appear to list any. This attempted performance regression fix didn't generate much feedback (to say the least). It's however a real issue for us when supporting a legacy product where we don't have the lux

Re: [PATCH v1 2/2] romfs: address performance regression since v3.10

2020-06-23 Thread Sven Van Asbroeck
On Tue, Jun 23, 2020 at 12:17 PM kernel test robot wrote: > >ld: fs/romfs/super.o: in function `romfs_largest_blocksize': > >> fs/romfs/super.c:505: undefined reference to `__moddi3' > > > 505 if ((device_sz % blksz) == 0) I can change this to device_sz & (blksz-1) if this p

Re: [PATCH v1 2/2] romfs: address performance regression since v3.10

2020-06-23 Thread kernel test robot
Hi Sven, I love your patch! Yet something to improve: [auto build test ERROR on linux/master] [also build test ERROR on linus/master v5.8-rc2 next-20200623] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https

[PATCH v1 2/2] romfs: address performance regression since v3.10

2020-06-22 Thread Sven Van Asbroeck
Problem --- romfs sequential read performance has regressed very badly since v3.10. Currently, reading a large file inside a romfs image is up to 12x slower compared to reading the romfs image directly. Benchmarks: - use a romfs image which contains a single 250M file - calculate the md5sum of

[PATCH v1 2/2] romfs: address performance regression since v3.10

2020-06-22 Thread Sven Van Asbroeck
Problem --- romfs sequential read performance has regressed very badly since v3.10. Currently, reading a large file inside a romfs image is up to 12x slower compared to reading the romfs image directly. Benchmarks: - use a romfs image which contains a single 250M file - calculate the md5sum of