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OpenZFS 6676 - Race between unique_insert() and unique_remove() causes ZFS fsid change

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Authored by: Josef 'Jeff' Sipek <josef.sipek@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Dan Vatca <dan.vatca@gmail.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Ported-by: George Melikov <mail@gmelikov.ru>

OpenZFS-issue: https://www.illumos.org/issues/6676
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/40510e8
Closes #5667
This commit is contained in:
George Melikov
2017-01-27 01:43:28 +03:00
committed by Brian Behlendorf
parent aeacdefedc
commit 39efbde7c5
9 changed files with 90 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/dnode.c
+3 -3
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@@ -1021,7 +1021,7 @@ dnode_special_open(objset_t *os, dnode_phys_t *dnp, uint64_t object,
}
static void
dnode_buf_pageout(void *dbu)
dnode_buf_evict_async(void *dbu)
{
dnode_children_t *children_dnodes = dbu;
int i;
@@ -1271,8 +1271,8 @@ dnode_hold_impl(objset_t *os, uint64_t object, int flag, int slots,
for (i = 0; i < epb; i++) {
zrl_init(&dnh[i].dnh_zrlock);
}
dmu_buf_init_user(&children_dnodes->dnc_dbu,
dnode_buf_pageout, NULL);
dmu_buf_init_user(&children_dnodes->dnc_dbu, NULL,
dnode_buf_evict_async, NULL);
winner = dmu_buf_set_user(&db->db, &children_dnodes->dnc_dbu);
if (winner != NULL) {