Author: kib
Date: Tue Feb 4 18:52:25 2020
New Revision: 357511
URL: https://svnweb.freebsd.org/changeset/base/357511
Log:
tmpfs_mount update: simplify, cache the value of VFS_TO_TMPFS() calculation.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/fs/tmpfs/tmpfs_vfsops.c
Modified: head/sys/fs/tmpfs/tmpfs_vfsops.c
==============================================================================
--- head/sys/fs/tmpfs/tmpfs_vfsops.c Tue Feb 4 18:45:28 2020
(r357510)
+++ head/sys/fs/tmpfs/tmpfs_vfsops.c Tue Feb 4 18:52:25 2020
(r357511)
@@ -346,6 +346,7 @@ tmpfs_mount(struct mount *mp)
/* Only support update mounts for certain options. */
if (vfs_filteropt(mp->mnt_optnew, tmpfs_updateopts) != 0)
return (EOPNOTSUPP);
+ tmp = VFS_TO_TMPFS(mp);
if (vfs_getopt_size(mp->mnt_optnew, "size", &size_max) == 0) {
/*
* On-the-fly resizing is not supported (yet). We still
@@ -354,17 +355,17 @@ tmpfs_mount(struct mount *mp)
* parameter, say trying to change rw to ro or vice
* versa, would cause vfs_filteropt() to bail.
*/
- if (size_max != VFS_TO_TMPFS(mp)->tm_size_max)
+ if (size_max != tmp->tm_size_max)
return (EOPNOTSUPP);
}
if (vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) &&
- !(VFS_TO_TMPFS(mp)->tm_ronly)) {
+ !tmp->tm_ronly) {
/* RW -> RO */
return (tmpfs_rw_to_ro(mp));
} else if (!vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) &&
- VFS_TO_TMPFS(mp)->tm_ronly) {
+ tmp->tm_ronly) {
/* RO -> RW */
- VFS_TO_TMPFS(mp)->tm_ronly = 0;
+ tmp->tm_ronly = 0;
MNT_ILOCK(mp);
mp->mnt_flag &= ~MNT_RDONLY;
MNT_IUNLOCK(mp);
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