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5148 zvol's DKIOCFREE holds zfsdev_state_lock too long

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Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Paul Dagnelie <paul.dagnelie@delphix.com>
Reviewed by: Sebastien Roy <sebastien.roy@delphix.com>
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
Author: George Wilson <george.wilson@delphix.com>

illumos/illumos-gate@574e2414ac
This commit is contained in:
Xin LI 2014-10-04 07:35:50 +00:00
parent 5fce0b0809
commit f9fa0a788c
1 changed files with 3 additions and 3 deletions
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6
uts/common/fs/zfs/zvol.c
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@ -1781,8 +1781,8 @@ zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
*/
if (df.df_start >= zv->zv_volsize)
break; /* No need to do anything... */
if (df.df_start + df.df_length > zv->zv_volsize)
df.df_length = DMU_OBJECT_END;
mutex_exit(&zfsdev_state_lock);
rl = zfs_range_lock(&zv->zv_znode, df.df_start, df.df_length,
RL_WRITER);
@ -1821,7 +1821,7 @@ zvol_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
dmu_objset_pool(zv->zv_objset), 0);
}
}
break;
return (error);
}
default: