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Differential D5080 Diff 14352 sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c

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sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu.c

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#include <sys/dmu_zfetch.h> #include <sys/dmu_zfetch.h>
#include <sys/zfs_ioctl.h> #include <sys/zfs_ioctl.h>
#include <sys/zap.h> #include <sys/zap.h>
#include <sys/zio_checksum.h> #include <sys/zio_checksum.h>
#include <sys/zio_compress.h> #include <sys/zio_compress.h>
#include <sys/sa.h> #include <sys/sa.h>
#include <sys/zfeature.h> #include <sys/zfeature.h>
#ifdef _KERNEL #ifdef _KERNEL
#include <sys/racct.h>
#include <sys/vm.h> #include <sys/vm.h>
#include <sys/zfs_znode.h> #include <sys/zfs_znode.h>
#endif #endif
/* /*
* Enable/disable nopwrite feature. * Enable/disable nopwrite feature.
*/ */
int zfs_nopwrite_enabled = 1; int zfs_nopwrite_enabled = 1;
▲ Show 20 Lines • Show All 364 Lines • ▼ Show 20 Lines if (offset + length > dn->dn_datablksz) {
(longlong_t)offset, (longlong_t)length); (longlong_t)offset, (longlong_t)length);
rw_exit(&dn->dn_struct_rwlock); rw_exit(&dn->dn_struct_rwlock);
return (SET_ERROR(EIO)); return (SET_ERROR(EIO));
} }
nblks = 1; nblks = 1;
} }
dbp = kmem_zalloc(sizeof (dmu_buf_t *) * nblks, KM_SLEEP); dbp = kmem_zalloc(sizeof (dmu_buf_t *) * nblks, KM_SLEEP);
#if defined(_KERNEL) && defined(RACCT)
if (racct_enable && !read) {
PROC_LOCK(curproc);
racct_add_force(curproc, RACCT_WRITEBPS, length);
racct_add_force(curproc, RACCT_WRITEIOPS, nblks);
PROC_UNLOCK(curproc);
}
#endif
zio = zio_root(dn->dn_objset->os_spa, NULL, NULL, ZIO_FLAG_CANFAIL); zio = zio_root(dn->dn_objset->os_spa, NULL, NULL, ZIO_FLAG_CANFAIL);
blkid = dbuf_whichblock(dn, 0, offset); blkid = dbuf_whichblock(dn, 0, offset);
for (i = 0; i < nblks; i++) { for (i = 0; i < nblks; i++) {
dmu_buf_impl_t *db = dbuf_hold(dn, blkid + i, tag); dmu_buf_impl_t *db = dbuf_hold(dn, blkid + i, tag);
if (db == NULL) { if (db == NULL) {
rw_exit(&dn->dn_struct_rwlock); rw_exit(&dn->dn_struct_rwlock);
dmu_buf_rele_array(dbp, nblks, tag); dmu_buf_rele_array(dbp, nblks, tag);
zio_nowait(zio); zio_nowait(zio);
▲ Show 20 Lines • Show All 979 Lines • ▼ Show 20 Linesdmu_assign_arcbuf(dmu_buf_t *handle, uint64_t offset, arc_buf_t *buf,
* same size as the dbuf, and the dbuf is not metadata. It * same size as the dbuf, and the dbuf is not metadata. It
* can't be metadata because the loaned arc buf comes from the * can't be metadata because the loaned arc buf comes from the
* user-data kmem arena. * user-data kmem arena.
*/ */
if (offset == db->db.db_offset && blksz == db->db.db_size && if (offset == db->db.db_offset && blksz == db->db.db_size &&
DBUF_GET_BUFC_TYPE(db) == ARC_BUFC_DATA) { DBUF_GET_BUFC_TYPE(db) == ARC_BUFC_DATA) {
#ifdef _KERNEL #ifdef _KERNEL
curthread->td_ru.ru_oublock++; curthread->td_ru.ru_oublock++;
#endif #ifdef RACCT
if (racct_enable) {
PROC_LOCK(curproc);
racct_add_force(curproc, RACCT_WRITEBPS, blksz);
racct_add_force(curproc, RACCT_WRITEIOPS, 1);
PROC_UNLOCK(curproc);
}
#endif /* RACCT */
#endif /* _KERNEL */
dbuf_assign_arcbuf(db, buf, tx); dbuf_assign_arcbuf(db, buf, tx);
dbuf_rele(db, FTAG); dbuf_rele(db, FTAG);
} else { } else {
objset_t *os; objset_t *os;
uint64_t object; uint64_t object;
DB_DNODE_ENTER(dbuf); DB_DNODE_ENTER(dbuf);
dn = DB_DNODE(dbuf); dn = DB_DNODE(dbuf);
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