diff options
| author | Brian Behlendorf <[email protected]> | 2015-08-27 17:01:59 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2015-08-28 09:16:59 -0700 |
| commit | c495fe2c1c6b1c63aefcd832e2e0eb0a20d4c4dc (patch) | |
| tree | d0f8581df9f29806d304af8bc9e58f48f21f5f03 /lib/libzfs/libzfs_dataset.c | |
| parent | 5475aada9474464f973788c1b2fc6216486fb303 (diff) | |
Limit max_hw_sectors_kb to 16M
When support for large blocks was added DMU_MAX_ACCESS was increased
to allow for blocks of up to 16M to fit in a transaction handle.
This had the side effect of increasing the max_hw_sectors_kb for
volumes, which are scaled off DMU_MAX_ACCESS, to 64M from 10M.
This is an issue for volumes which by default use an 8K block size
because it results in dmu_buf_hold_array_by_dnode() allocating a
64K array for the dbufs. The solution is to restore the maximum
size to ~10M. This patch specifically changes it to 16M which is
close enough.
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #3684
Diffstat (limited to 'lib/libzfs/libzfs_dataset.c')
0 files changed, 0 insertions, 0 deletions