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| author | Tim Chase <[email protected]> | 2014-11-10 23:26:33 -0600 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-11-17 11:25:48 -0800 |
| commit | 4254acb05743dc2175ae76f6e15b0785d4b688fd (patch) | |
| tree | 4a3e1dd0e51bd2846c05d79146cf581ebdf4e699 /module/zfs/dsl_scan.c | |
| parent | bc9f4131a15a177f1d355ad1c5c844e0ab9a505a (diff) | |
Undirty freed spill blocks.
If a spill block's dbuf hasn't yet been written when a spill block is
freed, the unwritten version will still be written. This patch handles
the case in which a spill block's dbuf is freed and undirties it to
prevent it from being written.
The most common case in which this could happen is when xattr=sa is being
used and a long xattr is immediately replaced by a short xattr as in:
setfattr -n user.test -v very_very_very..._long_value <file>
setfattr -n user.test -v short_value <file>
The first value must be sufficiently long that a spill block is generated
and the second value must be short enough to not require a spill block.
In practice, this would typically happen due to internal xattr operations
as a result of setting acltype=posixacl.
Signed-off-by: Tim Chase <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2663
Closes #2700
Closes #2701
Closes #2717
Closes #2863
Closes #2884
Diffstat (limited to 'module/zfs/dsl_scan.c')
0 files changed, 0 insertions, 0 deletions