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Delete dead code: dbuf_loan_arcbuf

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It's been dead ever since 5fa356ea44

Sponsored by:	ConnectWise
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by:	Alan Somers <asomers@gmail.com>
Closes #17119
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Alan Somers 2025-05-08 08:34:11 -06:00 committed by GitHub
parent 4800181b3b
commit f13d760aa8
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GPG Key ID: B5690EEEBB952194
2 changed files with 0 additions and 29 deletions
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1
include/sys/dbuf.h
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@ -401,7 +401,6 @@ dbuf_dirty_record_t *dbuf_dirty_lightweight(dnode_t *dn, uint64_t blkid,
boolean_t dbuf_undirty(dmu_buf_impl_t *db, dmu_tx_t *tx); boolean_t dbuf_undirty(dmu_buf_impl_t *db, dmu_tx_t *tx);
int dmu_buf_get_bp_from_dbuf(dmu_buf_impl_t *db, blkptr_t **bp); int dmu_buf_get_bp_from_dbuf(dmu_buf_impl_t *db, blkptr_t **bp);
int dmu_buf_untransform_direct(dmu_buf_impl_t *db, spa_t *spa); int dmu_buf_untransform_direct(dmu_buf_impl_t *db, spa_t *spa);
arc_buf_t *dbuf_loan_arcbuf(dmu_buf_impl_t *db);
void dmu_buf_write_embedded(dmu_buf_t *dbuf, void *data, void dmu_buf_write_embedded(dmu_buf_t *dbuf, void *data,
bp_embedded_type_t etype, enum zio_compress comp, bp_embedded_type_t etype, enum zio_compress comp,
int uncompressed_size, int compressed_size, int byteorder, dmu_tx_t *tx); int uncompressed_size, int compressed_size, int byteorder, dmu_tx_t *tx);

28
module/zfs/dbuf.c
View File

@ -1274,33 +1274,6 @@ dbuf_alloc_arcbuf(dmu_buf_impl_t *db)
return (arc_alloc_buf(spa, db, DBUF_GET_BUFC_TYPE(db), db->db.db_size)); return (arc_alloc_buf(spa, db, DBUF_GET_BUFC_TYPE(db), db->db.db_size));
} }
/*
* Loan out an arc_buf for read. Return the loaned arc_buf.
*/
arc_buf_t *
dbuf_loan_arcbuf(dmu_buf_impl_t *db)
{
arc_buf_t *abuf;
ASSERT(db->db_blkid != DMU_BONUS_BLKID);
mutex_enter(&db->db_mtx);
if (arc_released(db->db_buf) || zfs_refcount_count(&db->db_holds) > 1) {
int blksz = db->db.db_size;
spa_t *spa = db->db_objset->os_spa;
mutex_exit(&db->db_mtx);
abuf = arc_loan_buf(spa, B_FALSE, blksz);
memcpy(abuf->b_data, db->db.db_data, blksz);
} else {
abuf = db->db_buf;
arc_loan_inuse_buf(abuf, db);
db->db_buf = NULL;
dbuf_clear_data(db);
mutex_exit(&db->db_mtx);
}
return (abuf);
}
/* /*
* Calculate which level n block references the data at the level 0 offset * Calculate which level n block references the data at the level 0 offset
* provided. * provided.
@ -5390,7 +5363,6 @@ dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, dmu_tx_t *tx)
EXPORT_SYMBOL(dbuf_find); EXPORT_SYMBOL(dbuf_find);
EXPORT_SYMBOL(dbuf_is_metadata); EXPORT_SYMBOL(dbuf_is_metadata);
EXPORT_SYMBOL(dbuf_destroy); EXPORT_SYMBOL(dbuf_destroy);
EXPORT_SYMBOL(dbuf_loan_arcbuf);
EXPORT_SYMBOL(dbuf_whichblock); EXPORT_SYMBOL(dbuf_whichblock);
EXPORT_SYMBOL(dbuf_read); EXPORT_SYMBOL(dbuf_read);
EXPORT_SYMBOL(dbuf_unoverride); EXPORT_SYMBOL(dbuf_unoverride);