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vfs: set NC_KEEPPOSENTRY alongside NOCACHE when creating a file

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Arguably the entire NOCACHE logic should get retired, in the meantime
at least prevent the code from evicting existing entries.
This commit is contained in:
Mateusz Guzik 2021-01-13 15:53:55 +01:00
parent 5753be8e43
commit ef23df1354
1 changed files with 5 additions and 2 deletions
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7
sys/kern/vfs_vnops.c
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@ -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)