diff options
| author | Chris Dunlop <[email protected]> | 2015-03-16 12:21:21 +1100 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2015-03-24 13:17:44 -0700 |
| commit | d07b7c7f210e3f92775ad93a7306812edf524bfc (patch) | |
| tree | b2e323ad1c77e6ab897ffa2e675a72126fd94ec8 /include | |
| parent | bc88866657979c5658441e201e19df365c67ddfe (diff) | |
Reduce size of zfs_sb_t: allocate z_hold_mtx separately
zfs_sb_t has grown to the point where using kmem_zalloc() for allocations
is triggering the 32k warning threshold.
We can't safely convert this entire allocation to use vmem_alloc() instead
of kmem_alloc() because the backing_dev_info structure is embedded here.
It depends on the bit_waitqueue() function which won't behave properly
when given a virtual address.
Instead, use vmem_alloc() to allocate the z_hold_mtx array separately.
Signed-off-by: Brian Behlendorf <[email protected]>
Signed-off-by: Chris Dunlop <[email protected]>
Closes #3178
Diffstat (limited to 'include')
| -rw-r--r-- | include/sys/zfs_vfsops.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sys/zfs_vfsops.h b/include/sys/zfs_vfsops.h index 4b88260de..c4db2a911 100644 --- a/include/sys/zfs_vfsops.h +++ b/include/sys/zfs_vfsops.h @@ -92,7 +92,7 @@ typedef struct zfs_sb { uint64_t z_replay_eof; /* New end of file - replay only */ sa_attr_type_t *z_attr_table; /* SA attr mapping->id */ #define ZFS_OBJ_MTX_SZ 256 - kmutex_t z_hold_mtx[ZFS_OBJ_MTX_SZ]; /* znode hold locks */ + kmutex_t *z_hold_mtx; /* znode hold locks */ } zfs_sb_t; #define ZFS_SUPER_MAGIC 0x2fc12fc1 |