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61f218b090
This commit fixes a regression which was accidentally introduced by the Linux 2.6.39 compatibility chanages. As part of these changes instead of holding an active reference on the namepsace (which is no longer posible) a reference is taken on the super block. This reference ensures the super block remains valid while it is in use. To handle the unlikely race condition of the filesystem being unmounted concurrently with the start of a 'zfs send/recv' the code was updated to only take the super block reference when there was an existing reference. This indicates that the filesystem is active and in use. Unfortunately, in the 'zfs recv' case this is not the case. The newly created dataset will not have a super block without an active reference which results in the 'dataset is busy' error. The most straight forward fix for this is to simply update the code to always take the reference even when it's zero. This may expose us to very very unlikely concurrent umount/send/recv case but the consequences of that are minor. Closes #319 |
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| avl | ||
| nvpair | ||
| unicode | ||
| zcommon | ||
| zfs | ||
| zpios | ||
| .gitignore | ||
| Makefile.in | ||