Author: delphij Date: Sat Oct 18 22:11:10 2014 New Revision: 273267 URL: https://svnweb.freebsd.org/changeset/base/273267
Log: Add tunable vfs.zfs.space_map_blksz for space map's maximum block size. MFC after: 2 weeks Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Sat Oct 18 19:36:11 2014 (r273266) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Sat Oct 18 22:11:10 2014 (r273267) @@ -37,6 +37,8 @@ #include <sys/refcount.h> #include <sys/zfeature.h> +SYSCTL_DECL(_vfs_zfs); + /* * The data for a given space map can be kept on blocks of any size. * Larger blocks entail fewer i/o operations, but they also cause the @@ -44,6 +46,8 @@ * when only a few blocks have changed since the last transaction group. */ int space_map_blksz = (1 << 12); +SYSCTL_INT(_vfs_zfs, OID_AUTO, space_map_blksz, CTLFLAG_RDTUN, &space_map_blksz, 0, + "Maximum block size for space map. Must be power of 2 and greater than 4096."); /* * Load the space map disk into the specified range tree. Segments of maptype _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
