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Do not sleep waiting for the MAP_ENTRY_IN_TRANSITION state ending with

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the vnode locked.

Review:	https://reviews.freebsd.org/D2381
Submitted by:	Conrad Meyer, Attilio Rao
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2015-04-28 08:20:23 +00:00
parent 37a9b4136e
commit 85af31a464
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=282128
1 changed files with 4 additions and 0 deletions
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4
sys/vm/vm_fault.c
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@ -348,6 +348,10 @@ RetryFault:;
vm_map_lock(fs.map);
if (vm_map_lookup_entry(fs.map, vaddr, &fs.entry) &&
(fs.entry->eflags & MAP_ENTRY_IN_TRANSITION)) {
if (fs.vp != NULL) {
vput(fs.vp);
fs.vp = NULL;
}
fs.entry->eflags |= MAP_ENTRY_NEEDS_WAKEUP;
vm_map_unlock_and_wait(fs.map, 0);
} else