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| author | Mateusz Guzik <mjg@FreeBSD.org> | 2017-02-05 03:23:16 +0000 |
|---|---|---|
| committer | Mateusz Guzik <mjg@FreeBSD.org> | 2017-02-05 03:23:16 +0000 |
| commit | 2d78a5531ef1ac9bd45e67b7a04dee2f52e1f224 (patch) | |
| tree | 26a0cf4dc13571ec8af401cf4c179b9b1990c21a /sys/kern/vfs_subr.c | |
| parent | 9613442e8388c66a89997769bc09af94b64e77cb (diff) | |
| download | src-2d78a5531ef1ac9bd45e67b7a04dee2f52e1f224.tar.gz src-2d78a5531ef1ac9bd45e67b7a04dee2f52e1f224.zip | |
vfs: use atomic_fcmpset in vfs_refcount_*
Notes
Notes:
svn path=/head/; revision=313268
Diffstat (limited to 'sys/kern/vfs_subr.c')
| -rw-r--r-- | sys/kern/vfs_subr.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 792fbb610a84..039d06829e2c 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -2461,11 +2461,11 @@ vfs_refcount_acquire_if_not_zero(volatile u_int *count) { u_int old; + old = *count; for (;;) { - old = *count; if (old == 0) return (0); - if (atomic_cmpset_int(count, old, old + 1)) + if (atomic_fcmpset_int(count, &old, old + 1)) return (1); } } @@ -2475,11 +2475,11 @@ vfs_refcount_release_if_not_last(volatile u_int *count) { u_int old; + old = *count; for (;;) { - old = *count; if (old == 1) return (0); - if (atomic_cmpset_int(count, old, old - 1)) + if (atomic_fcmpset_int(count, &old, old - 1)) return (1); } } |