tree bf622ae5f84894a20fba961d010e083372b19e4d
parent 4c3032d8a4d6c97bd6e02bcab524ef2428d89561
author Borislav Petkov <petkovbb@googlemail.com> 1209303512 +0200
committer Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> 1209303512 +0200

ide-tape: improve buffer allocation strategy

Instead of allocating pages for the buffer one by one, take advantage of the
buddy alloc system and request them 2^order at a time. This increases the chance
for bigger buffer parts to be contigious and reduces loop iteration count. While
at it, rename function __idetape_kmalloc_stage() to ide_tape_kmalloc_buffer().

[bart: fold with "ide-tape: fix mem leak" patch to preserve bisectability]

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>