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Merge branch 'linux-debug-zerocopy' into refs/top-bases/linux-zfs-branch

This commit is contained in:
Brian Behlendorf 2010-06-21 22:01:57 -07:00
parent 79bd363c46 06376e3a0e
commit e780aad257
2 changed files with 6 additions and 20 deletions
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18
module/zfs/dmu.c
View File

@ -685,8 +685,7 @@ dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
bufoff = offset - db->db_offset;
tocpy = (int)MIN(db->db_size - bufoff, size);
if (!(flags & DMU_READ_ZEROCOPY))
bcopy((char *)db->db_data + bufoff, buf, tocpy);
bcopy((char *)db->db_data + bufoff, buf, tocpy);
offset += tocpy;
size -= tocpy;
@ -699,8 +698,8 @@ dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
}
void
dmu_write_impl(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
const void *buf, dmu_tx_t *tx, int flags)
dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
const void *buf, dmu_tx_t *tx)
{
dmu_buf_t **dbp;
int numbufs, i;
@ -728,8 +727,7 @@ dmu_write_impl(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
else
dmu_buf_will_dirty(db, tx);
if (!(flags & DMU_WRITE_ZEROCOPY))
bcopy(buf, (char *)db->db_data + bufoff, tocpy);
bcopy(buf, (char *)db->db_data + bufoff, tocpy);
if (tocpy == db->db_size)
dmu_buf_fill_done(db, tx);
@ -741,13 +739,6 @@ dmu_write_impl(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
dmu_buf_rele_array(dbp, numbufs, FTAG);
}
void
dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
const void *buf, dmu_tx_t *tx)
{
dmu_write_impl(os, object, offset, size, buf, tx, 0);
}
void
dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
dmu_tx_t *tx)
@ -1740,7 +1731,6 @@ dmu_fini(void)
EXPORT_SYMBOL(dmu_bonus_hold);
EXPORT_SYMBOL(dmu_free_range);
EXPORT_SYMBOL(dmu_read);
EXPORT_SYMBOL(dmu_write_impl);
EXPORT_SYMBOL(dmu_write);
/* Get information on a DMU object. */

8
module/zfs/include/sys/dmu.h
View File

@ -165,8 +165,8 @@ void zfs_znode_byteswap(void *buf, size_t size);
* The maximum number of bytes that can be accessed as part of one
* operation, including metadata.
*/
#define DMU_MAX_ACCESS (10<<20) /* 10MB */
#define DMU_MAX_DELETEBLKCNT (20480) /* ~5MB of indirect blocks */
#define DMU_MAX_ACCESS (10<<20) /* 10MB */
#define DMU_MAX_DELETEBLKCNT (20480) /* ~5MB of indirect blocks */
#define DMU_USERUSED_OBJECT (-1ULL)
#define DMU_GROUPUSED_OBJECT (-2ULL)
@ -506,12 +506,8 @@ int dmu_free_object(objset_t *os, uint64_t object);
*/
#define DMU_READ_PREFETCH 0 /* prefetch */
#define DMU_READ_NO_PREFETCH 1 /* don't prefetch */
#define DMU_READ_ZEROCOPY 2 /* zerocopy on read (test) */
#define DMU_WRITE_ZEROCOPY 4 /* zerocopy on write (test) */
int dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
void *buf, uint32_t flags);
void dmu_write_impl(objset_t *os, uint64_t object, uint64_t offset,
uint64_t size, const void *buf, dmu_tx_t *tx, int flags);
void dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
const void *buf, dmu_tx_t *tx);
void dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,