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| author | rmacklem <rmacklem@FreeBSD.org> | 2015-04-15 20:16:31 +0000 |
|---|---|---|
| committer | rmacklem <rmacklem@FreeBSD.org> | 2015-04-15 20:16:31 +0000 |
| commit | ad77d0b1c1c3c09a9bf76bebb397102d08ed35c6 (patch) | |
| tree | bbc578ff440927019e13de747fa3256b9df8b2d7 /sys/fs/nullfs | |
| parent | 98c2a4bca48582a25dbb01274fd65c9b8cd74058 (diff) | |
| download | FreeBSD-src-ad77d0b1c1c3c09a9bf76bebb397102d08ed35c6.zip FreeBSD-src-ad77d0b1c1c3c09a9bf76bebb397102d08ed35c6.tar.gz | |
File systems that do not use the buffer cache (such as ZFS) must
use VOP_FSYNC() to perform the NFS server's Commit operation.
This patch adds a mnt_kern_flag called MNTK_USES_BCACHE which
is set by file systems that use the buffer cache. If this flag
is not set, the NFS server always does a VOP_FSYNC().
This should be ok for old file system modules that do not set
MNTK_USES_BCACHE, since calling VOP_FSYNC() is correct, although
it might not be optimal for file systems that use the buffer cache.
Reviewed by: kib
MFC after: 2 weeks
Diffstat (limited to 'sys/fs/nullfs')
| -rw-r--r-- | sys/fs/nullfs/null_vfsops.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/fs/nullfs/null_vfsops.c b/sys/fs/nullfs/null_vfsops.c index fd3d385..618090b 100644 --- a/sys/fs/nullfs/null_vfsops.c +++ b/sys/fs/nullfs/null_vfsops.c @@ -199,7 +199,7 @@ nullfs_mount(struct mount *mp) } mp->mnt_kern_flag |= MNTK_LOOKUP_EXCL_DOTDOT; mp->mnt_kern_flag |= lowerrootvp->v_mount->mnt_kern_flag & - MNTK_SUSPENDABLE; + (MNTK_SUSPENDABLE | MNTK_USES_BCACHE); MNT_IUNLOCK(mp); mp->mnt_data = xmp; vfs_getnewfsid(mp); |
