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libata: align ap->sector_buf

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ap->sector_buf is used as DMA target and should at least be aligned on
cacheline.  This caused problems on some embedded machines.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2009-03-02 18:53:26 +09:00 committed by Jeff Garzik
parent 5825627c94
commit 84bda12af3
1 changed files with 2 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

3
include/linux/libata.h
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@ -751,7 +751,8 @@ struct ata_port {
acpi_handle acpi_handle;
struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
#endif
u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */
/* owned by EH */
u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
};
/* The following initializer overrides a method to NULL whether one of