My bad. I figured it out. I was looking at (objset_phys_t)os, I should
have looked at os as (objset_t).
Thanks,
Nagaraj.
Nagaraj Yedathore (from home) wrote:
Hi,
The function dnode_special_open had dnode_handle_t * as fourth argument.
dnode_t * dnode_special_open(objset_t *os, dnode_phys_t *dnp, uint64_t
object, dnode_handle_t *dnh)
But we send address of dnode_phys_t, while calling the function, in
usr/src/uts/common/fs/zfs/dmu_objset.c
390 DMU_META_DNODE(os) = dnode_special_open(os,
391 &os->os_phys->os_meta_dnode, DMU_META_DNODE_OBJECT,
392 &os->os_meta_dnode);
whereas, dnode_handle_t is defined as:
237 typedef struct dnode_handle {
238 /* Protects dnh_dnode from modification by dnode_move(). */
239 zrlock_t dnh_zrlock;
240 dnode_t *dnh_dnode;
241 } dnode_handle_t;
It looks strange to me as to how dnode_phys_t * is mapped to
dnode_handle_t *, when these structures are totally different. Am I
making a silly mistake reading the code? Please help.
Thanks in advance,
Nagaraj.
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