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swh:1:snp:c3bf2749e3476071fa748f67b0ffa2fdc5fe49d9
Revision 2d68b7fe55d9e19a8a868224ed0dfd6526568521 authored by Catalin Marinas on 04 February 2010, 06:04:50 UTC, committed by Jeff Garzik on 04 February 2010, 06:04:50 UTC 
[libata] Call flush_dcache_page after PIO data transfers in libata-sff.c
 
flush_dcache_page() must be called after (!ATA_TFLAG_WRITE) the
data copying to avoid D-cache aliasing with user space or I-D cache
coherency issues (when reading data from an ATA device using PIO,
the kernel dirties the D-cache but there is no flush_dcache_page()
required on Harvard architectures).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
1 parent cedc9bf
History
Tip revision: d1221cea11fca0f6946bdd032a45b22cecfc0f99 authored by Linus Torvalds on 13 September 2022, 13:11:38 UTC
Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Tip revision: d1221ce
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