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authorPaul Mundt <lethal@linux-sh.org>2010-12-01 01:39:51 -0500
committerPaul Mundt <lethal@linux-sh.org>2010-12-01 01:39:51 -0500
commit55661fc1f105ed75852e937bf8ea408270eb0cca (patch)
treeaa96c0c6dd0a8230f9373cab32cd069564d27d23 /drivers/block/xen-blkfront.c
parent22a5b566c8c442b0b35b3b106795e2f2b3578096 (diff)
sh: Assume new page cache pages have dirty dcache lines.
This follows the ARM change c01778001a4f5ad9c62d882776235f3f31922fdd ("ARM: 6379/1: Assume new page cache pages have dirty D-cache") for the same rationale: There are places in Linux where writes to newly allocated page cache pages happen without a subsequent call to flush_dcache_page() (several PIO drivers including USB HCD). This patch changes the meaning of PG_arch_1 to be PG_dcache_clean and always flush the D-cache for a newly mapped page in update_mmu_cache(). This addresses issues seen with executing binaries from MMC, in addition to some of the other HCDs that don't explicitly do cache management for their pipe-in buffers. Requested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/block/xen-blkfront.c')
0 files changed, 0 insertions, 0 deletions