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| author | Rick Macklem <rmacklem@FreeBSD.org> | 2016-05-15 00:45:17 +0000 |
|---|---|---|
| committer | Rick Macklem <rmacklem@FreeBSD.org> | 2016-05-15 00:45:17 +0000 |
| commit | 72393e3d803d048f990d374a2e681925325317e7 (patch) | |
| tree | 8da465e67aabda3b743bf8a64717cc09abfb31d5 | |
| parent | 99ca491ca67b987e5deac7610fa49fb7cb7c9b89 (diff) | |
| download | src-72393e3d803d048f990d374a2e681925325317e7.tar.gz src-72393e3d803d048f990d374a2e681925325317e7.zip | |
Fix fuse so that stale buffer cache data isn't read.
When I/O on a file under fuse is switched from buffered to DIRECT_IO,
it was possible to read stale (before a recent modification) data from
the buffer cache. This patch invalidates the buffer cache for the
file to fix this.
PR: 194293
MFC after: 2 weeks
Notes
Notes:
svn path=/head/; revision=299816
| -rw-r--r-- | sys/fs/fuse/fuse_node.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/fs/fuse/fuse_node.c b/sys/fs/fuse/fuse_node.c index 2d9a53833c57..421461d02ad0 100644 --- a/sys/fs/fuse/fuse_node.c +++ b/sys/fs/fuse/fuse_node.c @@ -289,7 +289,9 @@ fuse_vnode_open(struct vnode *vp, int32_t fuse_open_flags, struct thread *td) * XXXIP: Handle fd based DIRECT_IO */ if (fuse_open_flags & FOPEN_DIRECT_IO) { + ASSERT_VOP_ELOCKED(vp, __func__); VTOFUD(vp)->flag |= FN_DIRECTIO; + fuse_io_invalbuf(vp, td); } else { VTOFUD(vp)->flag &= ~FN_DIRECTIO; } |