[PATCH v2 0/2] fbdev: Significantly improve performance of fbdefio mmap

Remove the bubble sort from fbdev defered-I/O page tracking. Most drivers only want to know which pages have been written to. The exact order is not important.

Tested on simpledrm.

v2: * make sorted page lists the special case (Sam) * improve several comments (Sam)

Thomas Zimmermann (2): fbdev/defio: Early-out if page is already enlisted fbdev: Don't sorting deferred-I/O pages by default

drivers/staging/fbtft/fbtft-core.c | 1 + drivers/video/fbdev/broadsheetfb.c | 1 + drivers/video/fbdev/core/fb_defio.c | 48 ++++++++++++++++++++--------- drivers/video/fbdev/metronomefb.c | 1 + drivers/video/fbdev/udlfb.c | 1 + include/linux/fb.h | 1 + 6 files changed, 38 insertions(+), 15 deletions(-)