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cache: factor away failed vexec handling

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This commit is contained in:
Mateusz Guzik 2020-08-04 19:55:26 +00:00
parent 0439b00ea8
commit 1164f7a566
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=363859
1 changed files with 28 additions and 17 deletions
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45
sys/kern/vfs_cache.c
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@ -3668,6 +3668,33 @@ cache_fplookup_parse_advance(struct cache_fpl *fpl)
}
}
static int __noinline
cache_fplookup_failed_vexec(struct cache_fpl *fpl, int error)
{
switch (error) {
case EAGAIN:
/*
* Can happen when racing against vgone.
* */
case EOPNOTSUPP:
cache_fpl_partial(fpl);
break;
default:
/*
* See the API contract for VOP_FPLOOKUP_VEXEC.
*/
if (!vn_seqc_consistent(fpl->dvp, fpl->dvp_seqc)) {
error = cache_fpl_aborted(fpl);
} else {
cache_fpl_smr_exit(fpl);
cache_fpl_handled(fpl, error);
}
break;
}
return (error);
}
static int
cache_fplookup_impl(struct vnode *dvp, struct cache_fpl *fpl)
{
@ -3715,23 +3742,7 @@ cache_fplookup_impl(struct vnode *dvp, struct cache_fpl *fpl)
error = VOP_FPLOOKUP_VEXEC(fpl->dvp, cnp->cn_cred, cnp->cn_thread);
if (__predict_false(error != 0)) {
switch (error) {
case EAGAIN:
case EOPNOTSUPP: /* can happen when racing against vgone */
cache_fpl_partial(fpl);
break;
default:
/*
* See the API contract for VOP_FPLOOKUP_VEXEC.
*/
if (!vn_seqc_consistent(fpl->dvp, fpl->dvp_seqc)) {
error = cache_fpl_aborted(fpl);
} else {
cache_fpl_smr_exit(fpl);
cache_fpl_handled(fpl, error);
}
break;
}
error = cache_fplookup_failed_vexec(fpl, error);
break;
}