Author: kib
Date: Thu Jul 28 12:06:40 2016
New Revision: 303434
URL: https://svnweb.freebsd.org/changeset/base/303434
Log:
MFC r303154:
Declare aio requests on files from local filesystems safe.
Approved by: re (gjb)
Modified:
stable/11/sys/kern/vfs_aio.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/kern/vfs_aio.c
==============================================================================
--- stable/11/sys/kern/vfs_aio.c Thu Jul 28 11:51:20 2016
(r303433)
+++ stable/11/sys/kern/vfs_aio.c Thu Jul 28 12:06:40 2016
(r303434)
@@ -1664,7 +1664,10 @@ aio_queue_file(struct file *fp, struct k
struct aioliojob *lj;
struct kaioinfo *ki;
struct kaiocb *job2;
+ struct vnode *vp;
+ struct mount *mp;
int error, opcode;
+ bool safe;
lj = job->lio;
ki = job->userproc->p_aioinfo;
@@ -1685,7 +1688,16 @@ aio_queue_file(struct file *fp, struct k
goto done;
#endif
queueit:
- if (!enable_aio_unsafe)
+ safe = false;
+ if (fp->f_type == DTYPE_VNODE) {
+ vp = fp->f_vnode;
+ if (vp->v_type == VREG || vp->v_type == VDIR) {
+ mp = fp->f_vnode->v_mount;
+ if (mp == NULL || (mp->mnt_flag & MNT_LOCAL) != 0)
+ safe = true;
+ }
+ }
+ if (!(safe || enable_aio_unsafe))
return (EOPNOTSUPP);
if (opcode == LIO_SYNC) {
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