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| author | rmacklem <rmacklem@FreeBSD.org> | 2015-04-30 12:39:24 +0000 |
|---|---|---|
| committer | rmacklem <rmacklem@FreeBSD.org> | 2015-04-30 12:39:24 +0000 |
| commit | fba63dddeb47d7daf52036b191fc27d0b34cb02b (patch) | |
| tree | 2eddb41071be4a6cf55f2041a43ee90ffc63440a /sys/kern/vfs_subr.c | |
| parent | 64b7754f6bf764fc7c4f921916e19418075e80e9 (diff) | |
| download | FreeBSD-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/kern/vfs_subr.c')
| -rw-r--r-- | sys/kern/vfs_subr.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 5fa2da2..7b625be 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -3138,6 +3138,7 @@ DB_SHOW_COMMAND(mount, db_show_mount) MNT_KERN_FLAG(MNTK_VGONE_WAITER); MNT_KERN_FLAG(MNTK_LOOKUP_EXCL_DOTDOT); MNT_KERN_FLAG(MNTK_MARKER); + MNT_KERN_FLAG(MNTK_USES_BCACHE); MNT_KERN_FLAG(MNTK_NOASYNC); MNT_KERN_FLAG(MNTK_UNMOUNT); MNT_KERN_FLAG(MNTK_MWAIT); |
