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device: Reorder device.h before change.

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This commit is contained in:
Alasdair G Kergon 2018-01-15 19:24:01 +00:00
parent da37cbd24f
commit 61d3296f2a
1 changed files with 27 additions and 29 deletions
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56
lib/device/device.h
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@ -56,6 +56,28 @@ struct dev_ext {
void *handle;
};
/*
* All I/O is annotated with the reason it is performed.
*/
typedef enum dev_io_reason {
DEV_IO_SIGNATURES = 0, /* Scanning device signatures */
DEV_IO_LABEL, /* LVM PV disk label */
DEV_IO_MDA_HEADER, /* Text format metadata area header */
DEV_IO_MDA_CONTENT, /* Text format metadata area content */
DEV_IO_MDA_EXTRA_HEADER, /* Header of any extra metadata areas on device */
DEV_IO_MDA_EXTRA_CONTENT, /* Content of any extra metadata areas on device */
DEV_IO_FMT1, /* Original LVM1 metadata format */
DEV_IO_POOL, /* Pool metadata format */
DEV_IO_LV, /* Content written to an LV */
DEV_IO_LOG /* Logging messages */
} dev_io_reason_t;
/*
* Is this I/O for a device's extra metadata area?
*/
#define EXTRA_IO(reason) ((reason) == DEV_IO_MDA_EXTRA_HEADER || (reason) == DEV_IO_MDA_EXTRA_CONTENT)
#define DEV_DEVBUF(dev, reason) (EXTRA_IO((reason)) ? &(dev)->last_extra_devbuf : &(dev)->last_devbuf)
struct device_area {
struct device *dev;
uint64_t start; /* Bytes */
@ -63,13 +85,11 @@ struct device_area {
};
struct device_buffer {
const void *data; /* Location of start of requested data (inside buf) */
/* Private */
void *malloc_address; /* Start of allocated memory */
void *buf; /* Aligned buffer that contains data within it */
struct device_area where; /* Location of buf */
unsigned write:1; /* 1 if write; 0 if read */
const void *data; /* Location of start of requested data (inside buf) */
void *malloc_address; /* Start of allocated memory */
void *buf; /* Aligned buffer that contains data within it */
struct device_area where; /* Location of buf */
unsigned write:1; /* 1 if write; 0 if read */
};
/*
@ -104,28 +124,6 @@ struct device {
char _padding[7];
};
/*
* All I/O is annotated with the reason it is performed.
*/
typedef enum dev_io_reason {
DEV_IO_SIGNATURES = 0, /* Scanning device signatures */
DEV_IO_LABEL, /* LVM PV disk label */
DEV_IO_MDA_HEADER, /* Text format metadata area header */
DEV_IO_MDA_CONTENT, /* Text format metadata area content */
DEV_IO_MDA_EXTRA_HEADER, /* Header of any extra metadata areas on device */
DEV_IO_MDA_EXTRA_CONTENT, /* Content of any extra metadata areas on device */
DEV_IO_FMT1, /* Original LVM1 metadata format */
DEV_IO_POOL, /* Pool metadata format */
DEV_IO_LV, /* Content written to an LV */
DEV_IO_LOG /* Logging messages */
} dev_io_reason_t;
/*
* Is this I/O for a device's extra metadata area?
*/
#define EXTRA_IO(reason) ((reason) == DEV_IO_MDA_EXTRA_HEADER || (reason) == DEV_IO_MDA_EXTRA_CONTENT)
#define DEV_DEVBUF(dev, reason) (EXTRA_IO((reason)) ? &(dev)->last_extra_devbuf : &(dev)->last_devbuf)
struct device_list {
struct dm_list list;
struct device *dev;