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Illumos 5369 - arc flags should be an enum

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5369 arc flags should be an enum
5370 consistent arc_buf_hdr_t naming scheme
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Alex Reece <alex.reece@delphix.com>
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed by: Richard Elling <richard.elling@richardelling.com>
Approved by: Richard Lowe <richlowe@richlowe.net>

Porting notes:

ZoL has moved some ARC definitions into arc_impl.h.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported by: Tim Chase <tim@chase2k.com>
This commit is contained in:
George Wilson
2014-12-06 09:24:32 -08:00
committed by Brian Behlendorf
parent ad4af89561
commit 2a4324141f
13 changed files with 396 additions and 387 deletions
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include/sys/arc.h
+31 -10
View File
@@ -57,6 +57,36 @@ struct arc_prune {
refcount_t p_refcnt;
};
typedef enum arc_flags
{
/*
* Public flags that can be passed into the ARC by external consumers.
*/
ARC_FLAG_NONE = 1 << 0, /* No flags set */
ARC_FLAG_WAIT = 1 << 1, /* perform sync I/O */
ARC_FLAG_NOWAIT = 1 << 2, /* perform async I/O */
ARC_FLAG_PREFETCH = 1 << 3, /* I/O is a prefetch */
ARC_FLAG_CACHED = 1 << 4, /* I/O was in cache */
ARC_FLAG_L2CACHE = 1 << 5, /* cache in L2ARC */
ARC_FLAG_L2COMPRESS = 1 << 6, /* compress in L2ARC */
/*
* Private ARC flags. These flags are private ARC only flags that
* will show up in b_flags in the arc_hdr_buf_t. These flags should
* only be set by ARC code.
*/
ARC_FLAG_IN_HASH_TABLE = 1 << 7, /* buffer is hashed */
ARC_FLAG_IO_IN_PROGRESS = 1 << 8, /* I/O in progress */
ARC_FLAG_IO_ERROR = 1 << 9, /* I/O failed for buf */
ARC_FLAG_FREED_IN_READ = 1 << 10, /* freed during read */
ARC_FLAG_BUF_AVAILABLE = 1 << 11, /* block not in use */
ARC_FLAG_INDIRECT = 1 << 12, /* indirect block */
ARC_FLAG_FREE_IN_PROGRESS = 1 << 13, /* about to be freed */
ARC_FLAG_L2_WRITING = 1 << 14, /* write in progress */
ARC_FLAG_L2_EVICTED = 1 << 15, /* evicted during I/O */
ARC_FLAG_L2_WRITE_HEAD = 1 << 16, /* head of write list */
} arc_flags_t;
struct arc_buf {
arc_buf_hdr_t *b_hdr;
arc_buf_t *b_next;
@@ -71,15 +101,6 @@ typedef enum arc_buf_contents {
ARC_BUFC_METADATA, /* buffer contains metadata */
ARC_BUFC_NUMTYPES
} arc_buf_contents_t;
/*
* These are the flags we pass into calls to the arc
*/
#define ARC_WAIT (1 << 1) /* perform I/O synchronously */
#define ARC_NOWAIT (1 << 2) /* perform I/O asynchronously */
#define ARC_PREFETCH (1 << 3) /* I/O is a prefetch */
#define ARC_CACHED (1 << 4) /* I/O was already in cache */
#define ARC_L2CACHE (1 << 5) /* cache in L2ARC */
#define ARC_L2COMPRESS (1 << 6) /* compress in L2ARC */
/*
* The following breakdows of arc_size exist for kstat only.
@@ -146,7 +167,7 @@ int arc_referenced(arc_buf_t *buf);
int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp,
arc_done_func_t *done, void *private, zio_priority_t priority, int flags,
uint32_t *arc_flags, const zbookmark_phys_t *zb);
arc_flags_t *arc_flags, const zbookmark_phys_t *zb);
zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, boolean_t l2arc_compress,
const zio_prop_t *zp, arc_done_func_t *ready, arc_done_func_t *physdone,