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zfs: try to fallback early if can't do optimized copy

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Not complete, but already shaves on some locking.

Sponsored by:	Rubicon Communications, LLC ("Netgate")
This commit is contained in:
Mateusz Guzik 2023-04-05 20:42:28 +00:00
parent d012836fb6
commit 20be1b4fc4
1 changed files with 8 additions and 0 deletions
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8
sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c
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@ -6236,6 +6236,7 @@ struct vop_copy_file_range_args {
static int
zfs_freebsd_copy_file_range(struct vop_copy_file_range_args *ap)
{
zfsvfs_t *outzfsvfs;
struct vnode *invp = ap->a_invp;
struct vnode *outvp = ap->a_outvp;
struct mount *mp;
@ -6251,6 +6252,13 @@ zfs_freebsd_copy_file_range(struct vop_copy_file_range_args *ap)
*/
vn_start_write(outvp, &mp, V_WAIT);
if (__predict_true(mp == outvp->v_mount)) {
outzfsvfs = (zfsvfs_t *)mp->mnt_data;
if (!spa_feature_is_enabled(dmu_objset_spa(outzfsvfs->z_os),
SPA_FEATURE_BLOCK_CLONING)) {
goto bad_write_fallback;
}
}
if (invp == outvp) {
if (vn_lock(outvp, LK_EXCLUSIVE) != 0) {
goto bad_write_fallback;