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2ab7db1ff1
New EH may issue internal commands to recover from error while failed qc's are still hanging around. To allow such usage, reserve tag ATA_MAX_QUEUE-1 for internal command. This also makes it easy to tell whether a qc is for internal command or not. ata_tag_internal() test implements this test. To avoid breaking existing drivers, ata_exec_internal() uses ATA_TAG_INTERNAL only for drivers which implement ->error_handler. For drivers using old EH, tag 0 is used. Note that this makes ata_tag_internal() test valid only when ->error_handler is implemented. This is okay as drivers on old EH should not and does not have any reason to use ata_tag_internal(). Signed-off-by: Tejun Heo <htejun@gmail.com> |
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| .. | ||
| acpi | ||
| asm-alpha | ||
| asm-arm | ||
| asm-arm26 | ||
| asm-cris | ||
| asm-frv | ||
| asm-generic | ||
| asm-h8300 | ||
| asm-i386 | ||
| asm-ia64 | ||
| asm-m32r | ||
| asm-m68k | ||
| asm-m68knommu | ||
| asm-mips | ||
| asm-parisc | ||
| asm-powerpc | ||
| asm-ppc | ||
| asm-s390 | ||
| asm-sh | ||
| asm-sh64 | ||
| asm-sparc | ||
| asm-sparc64 | ||
| asm-um | ||
| asm-v850 | ||
| asm-x86_64 | ||
| asm-xtensa | ||
| keys | ||
| linux | ||
| math-emu | ||
| media | ||
| mtd | ||
| net | ||
| pcmcia | ||
| rdma | ||
| rxrpc | ||
| scsi | ||
| sound | ||
| video | ||