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authorrmacklem <rmacklem@FreeBSD.org>2015-04-30 12:39:24 +0000
committerrmacklem <rmacklem@FreeBSD.org>2015-04-30 12:39:24 +0000
commitfba63dddeb47d7daf52036b191fc27d0b34cb02b (patch)
tree2eddb41071be4a6cf55f2041a43ee90ffc63440a /sys/fs/fuse
parent64b7754f6bf764fc7c4f921916e19418075e80e9 (diff)
downloadFreeBSD-src-fba63dddeb47d7daf52036b191fc27d0b34cb02b.zip
FreeBSD-src-fba63dddeb47d7daf52036b191fc27d0b34cb02b.tar.gz
MFC: r281562
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.
Diffstat (limited to 'sys/fs/fuse')
-rw-r--r--sys/fs/fuse/fuse_vfsops.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/fs/fuse/fuse_vfsops.c b/sys/fs/fuse/fuse_vfsops.c
index c00a96c..0a33373 100644
--- a/sys/fs/fuse/fuse_vfsops.c
+++ b/sys/fs/fuse/fuse_vfsops.c
@@ -337,6 +337,7 @@ fuse_vfsop_mount(struct mount *mp)
MNT_ILOCK(mp);
mp->mnt_data = data;
mp->mnt_flag |= MNT_LOCAL;
+ mp->mnt_kern_flag |= MNTK_USES_BCACHE;
MNT_IUNLOCK(mp);
/* We need this here as this slot is used by getnewvnode() */
mp->mnt_stat.f_iosize = PAGE_SIZE;
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