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Convert zfs_mg_noalloc_threshold to a module parameter and document

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The parameter was added as illumos issue 4081 which was committed to
zfsonlinux in ac72fac3ea.  This patch
documents the parameter and allows for it to be set as a module parameter.

Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2483
This commit is contained in:
Tim Chase
2014-07-09 22:36:03 -05:00
committed by Brian Behlendorf
parent d586964141
commit f4a4046bd6
2 changed files with 30 additions and 0 deletions
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module/zfs/metaslab.c
+4
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@@ -2120,4 +2120,8 @@ MODULE_PARM_DESC(metaslab_debug_load, "load all metaslabs during pool import");
module_param(metaslab_debug_unload, int, 0644);
MODULE_PARM_DESC(metaslab_debug_unload,
"prevent metaslabs from being unloaded");
module_param(zfs_mg_noalloc_threshold, int, 0644);
MODULE_PARM_DESC(zfs_mg_noalloc_threshold,
"percentage of free space for metaslab group to allow allocation");
#endif /* _KERNEL && HAVE_SPL */