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| author | kmacy <kmacy@FreeBSD.org> | 2012-01-28 17:41:42 +0000 |
|---|---|---|
| committer | kmacy <kmacy@FreeBSD.org> | 2012-01-28 17:41:42 +0000 |
| commit | b498d306f1e17ce5221db3a701c810f4816d62a3 (patch) | |
| tree | 33cba47e10ac6aa7f87b5f3675f713b56b2b9986 /sys/cddl | |
| parent | 4c87ca2cdcbc5b75ee372b4be70e63d77315bb2e (diff) | |
| download | FreeBSD-src-b498d306f1e17ce5221db3a701c810f4816d62a3.zip FreeBSD-src-b498d306f1e17ce5221db3a701c810f4816d62a3.tar.gz | |
add tunable for developers working on areas outside of ZFS
to further reduce core size by excluding ARC metadata buffers
from core dumps
Diffstat (limited to 'sys/cddl')
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c index 7515bd5..d465454 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c @@ -42,6 +42,10 @@ static int zio_use_uma = 0; TUNABLE_INT("vfs.zfs.zio.use_uma", &zio_use_uma); SYSCTL_INT(_vfs_zfs_zio, OID_AUTO, use_uma, CTLFLAG_RDTUN, &zio_use_uma, 0, "Use uma(9) for ZIO allocations"); +static int zio_exclude_metadata = 0; +TUNABLE_INT("vfs.zfs.zio.exclude_metadata", &zio_exclude_metadata); +SYSCTL_INT(_vfs_zfs_zio, OID_AUTO, exclude_metadata, CTLFLAG_RDTUN, &zio_exclude_metadata, 0, + "Exclude metadata buffers from dumps as well"); /* * ========================================================================== @@ -217,13 +221,14 @@ void * zio_buf_alloc(size_t size) { size_t c = (size - 1) >> SPA_MINBLOCKSHIFT; + int flags = zio_exclude_metadata ? KM_NODEBUG : 0; ASSERT(c < SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT); if (zio_use_uma) return (kmem_cache_alloc(zio_buf_cache[c], KM_PUSHPAGE)); else - return (kmem_alloc(size, KM_SLEEP)); + return (kmem_alloc(size, KM_SLEEP|flags)); } /* |
