[libata] use kmap_atomic(KM_IRQ0) in SCSI simulator
We are inside spin_lock_irqsave(). quoth akpm's debug facility: [ 231.948000] SCSI device sda: 195371568 512-byte hdwr sectors (100030 MB) [ 232.232000] ata1.00: configured for UDMA/33 [ 232.404000] WARNING (1) at arch/i386/mm/highmem.c:47 kmap_atomic() [ 232.404000] [<c01162e6>] kmap_atomic+0xa9/0x1ab [ 232.404000] [<c0242c81>] ata_scsi_rbuf_get+0x1c/0x30 [ 232.404000] [<c0242caf>] ata_scsi_rbuf_fill+0x1a/0x87 [ 232.404000] [<c0243ab2>] ata_scsiop_mode_sense+0x0/0x309 [ 232.404000] [<c01729d5>] end_bio_bh_io_sync+0x0/0x37 [ 232.404000] [<c02311c6>] scsi_done+0x0/0x16 [ 232.404000] [<c02311c6>] scsi_done+0x0/0x16 [ 232.404000] [<c0242dcc>] ata_scsi_simulate+0xb0/0x13f [...] Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@ -1539,7 +1539,7 @@ static unsigned int ata_scsi_rbuf_get(struct scsi_cmnd *cmd, u8 **buf_out)
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struct scatterlist *sg;
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sg = (struct scatterlist *) cmd->request_buffer;
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buf = kmap_atomic(sg->page, KM_USER0) + sg->offset;
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buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
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buflen = sg->length;
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} else {
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buf = cmd->request_buffer;
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@ -1567,7 +1567,7 @@ static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, u8 *buf)
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struct scatterlist *sg;
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sg = (struct scatterlist *) cmd->request_buffer;
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kunmap_atomic(buf - sg->offset, KM_USER0);
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kunmap_atomic(buf - sg->offset, KM_IRQ0);
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}
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}
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