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19d55079ae
4950 files sometimes can't be removed from a full filesystem Reviewed by: Adam Leventhal <adam.leventhal@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Sebastien Roy <sebastien.roy@delphix.com> Reviewed by: Boris Protopopov <bprotopopov@hotmail.com> Approved by: Dan McDonald <danmcd@omniti.com> References: https://www.illumos.org/issues/4950 https://github.com/illumos/illumos-gate/commit/4bb7380 Porting notes: - ZoL currently does not log discards to zvols, so the portion of this patch that modifies the discard logging to mark it as freeing space has been discarded. 2. may_delete_now had been removed from zfs_remove() in ZoL. It has been reintroduced. 3. We do not try to emulate vnodes, so the following lines are not valid on Linux: mutex_enter(&vp->v_lock); may_delete_now = vp->v_count == 1 && !vn_has_cached_data(vp); mutex_exit(&vp->v_lock); This has been replaced with: mutex_enter(&zp->z_lock); may_delete_now = atomic_read(&ip->i_count) == 1 && !(zp->z_is_mapped); mutex_exit(&zp->z_lock); Ported-by: Richard Yao <richard.yao@clusterhq.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> |
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