Date: Sun, 2 Nov 2014 19:09:35 +0000 (UTC) From: Xin LI <delphij@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r273983 - stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201411021909.sA2J9ZdK078007@svn.freebsd.org>
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Author: delphij Date: Sun Nov 2 19:09:34 2014 New Revision: 273983 URL: https://svnweb.freebsd.org/changeset/base/273983 Log: MFC r273267: Add tunable vfs.zfs.space_map_blksz for space map's maximum block size. Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c ============================================================================== --- stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Sun Nov 2 17:31:45 2014 (r273982) +++ stable/10/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/space_map.c Sun Nov 2 19:09:34 2014 (r273983) @@ -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
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