git: 0af463e6619c - main - ffs_read(): lock buffers after snaplk with LK_NOWITNESS
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Date: Sun, 06 Feb 2022 01:26:50 UTC
The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=0af463e6619cf9f7386129d427c244d3da30fa3a commit 0af463e6619cf9f7386129d427c244d3da30fa3a Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2022-02-05 02:03:47 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2022-02-06 01:26:22 +0000 ffs_read(): lock buffers after snaplk with LK_NOWITNESS Reviewed and tested by: mckusick Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D34179 --- sys/ufs/ffs/ffs_vnops.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sys/ufs/ffs/ffs_vnops.c b/sys/ufs/ffs/ffs_vnops.c index 66dafed5ac9e..b57e9a3a71b0 100644 --- a/sys/ufs/ffs/ffs_vnops.c +++ b/sys/ufs/ffs/ffs_vnops.c @@ -695,6 +695,9 @@ ffs_read(ap) return (EOVERFLOW); bflag = GB_UNMAPPED | (uio->uio_segflg == UIO_NOCOPY ? 0 : GB_NOSPARSE); +#ifdef WITNESS + bflag |= IS_SNAPSHOT(ip) ? GB_NOWITNESS : 0; +#endif for (error = 0, bp = NULL; uio->uio_resid > 0; bp = NULL) { if ((bytesinfile = ip->i_size - uio->uio_offset) <= 0) break;