The branch main has been updated by mjg:
URL:
https://cgit.FreeBSD.org/src/commit/?id=ef23df13546811a49aeebb107dd17298bec8122e
commit ef23df13546811a49aeebb107dd17298bec8122e
Author: Mateusz Guzik <m...@freebsd.org>
AuthorDate: 2021-01-13 14:53:55 +0000
Commit: Mateusz Guzik <m...@freebsd.org>
CommitDate: 2021-01-13 15:29:34 +0000
vfs: set NC_KEEPPOSENTRY alongside NOCACHE when creating a file
Arguably the entire NOCACHE logic should get retired, in the meantime
at least prevent the code from evicting existing entries.
---
sys/kern/vfs_vnops.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c
index de5cd68501a7..6c6727c7f372 100644
--- a/sys/kern/vfs_vnops.c
+++ b/sys/kern/vfs_vnops.c
@@ -240,8 +240,11 @@ restart:
/*
* Set NOCACHE to avoid flushing the cache when
* rolling in many files at once.
- */
- ndp->ni_cnd.cn_flags |= LOCKPARENT | NOCACHE;
+ *
+ * Set NC_KEEPPOSENTRY to keep positive entries if they already
+ * exist despite NOCACHE.
+ */
+ ndp->ni_cnd.cn_flags |= LOCKPARENT | NOCACHE | NC_KEEPPOSENTRY;
if ((fmode & O_EXCL) == 0 && (fmode & O_NOFOLLOW) == 0)
ndp->ni_cnd.cn_flags |= FOLLOW;
if ((vn_open_flags & VN_OPEN_INVFS) == 0)
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