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    SubjectRe: [PATCH 1/2][RFC] add detailed error values to block layer
    Hi!

    > +enum {
    > + BLK_SUCCESS,
    > + BLK_ERR, /* Generic error like -EIO */
    > + BLK_FATAL_DEV, /* Fatal driver error */

    perhaps this should be fatal *device* error?

    > + BLK_FATAL_TRNSPT, /* Fatal transport error */
    > + BLK_FATAL_DRV, /* Fatal driver error */
    > + BLK_RETRY_DEV, /* Device error, I/O may be retried */
    > + BLK_RETRY_TRNSPT, /* Transport error, I/O may retried */
    > + BLK_RETRY_DRV, /* Driver error, I/O may be retried */
    > +};
    > +
    > +/*
    > * end_request() and friends. Must be called with the request queue spinlock
    > * acquired. All functions called within end_request() _must_be_ atomic.
    > *


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