xfs: Remove some pointless quota checks

xfs_fs_get_xstate() and xfs_fs_get_xstatev() check whether there's quota
running before calling xfs_qm_scall_getqstat() or
xfs_qm_scall_getqstatv(). Thus we are certain that superblock supports
quota and xfs_sb_version_hasquota() check is pointless. Similarly we
know that when quota is running, mp->m_quotainfo will be allocated.

Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 20 insertions, 39 deletions

diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index b7a8f5665d7b..42a15ddedb07 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -415,20 +415,12 @@ xfs_qm_scall_getqstat(
         memset(out, 0, sizeof(fs_quota_stat_t));
 
         out->qs_version = FS_QSTAT_VERSION;
-        if (!xfs_sb_version_hasquota(&mp->m_sb)) {
-                out->qs_uquota.qfs_ino = NULLFSINO;
-                out->qs_gquota.qfs_ino = NULLFSINO;
-                return 0;
-        }
-
         out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
                                                         (XFS_ALL_QUOTA_ACCT|
                                                          XFS_ALL_QUOTA_ENFD));
-        if (q) {
-                uip = q->qi_uquotaip;
-                gip = q->qi_gquotaip;
-                pip = q->qi_pquotaip;
-        }
+        uip = q->qi_uquotaip;
+        gip = q->qi_gquotaip;
+        pip = q->qi_pquotaip;
         if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
                 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
                                         0, 0, &uip) == 0)
@@ -474,14 +466,13 @@ xfs_qm_scall_getqstat(
                 if (temppqip)
                         IRELE(pip);
         }
-        if (q) {
-                out->qs_incoredqs = q->qi_dquots;
-                out->qs_btimelimit = q->qi_btimelimit;
-                out->qs_itimelimit = q->qi_itimelimit;
-                out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-                out->qs_bwarnlimit = q->qi_bwarnlimit;
-                out->qs_iwarnlimit = q->qi_iwarnlimit;
-        }
+        out->qs_incoredqs = q->qi_dquots;
+        out->qs_btimelimit = q->qi_btimelimit;
+        out->qs_itimelimit = q->qi_itimelimit;
+        out->qs_rtbtimelimit = q->qi_rtbtimelimit;
+        out->qs_bwarnlimit = q->qi_bwarnlimit;
+        out->qs_iwarnlimit = q->qi_iwarnlimit;
+
         return 0;
 }
 
@@ -502,13 +493,6 @@ xfs_qm_scall_getqstatv(
         bool                    tempgqip = false;
         bool                    temppqip = false;
 
-        if (!xfs_sb_version_hasquota(&mp->m_sb)) {
-                out->qs_uquota.qfs_ino = NULLFSINO;
-                out->qs_gquota.qfs_ino = NULLFSINO;
-                out->qs_pquota.qfs_ino = NULLFSINO;
-                return 0;
-        }
-
         out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
                                                         (XFS_ALL_QUOTA_ACCT|
                                                          XFS_ALL_QUOTA_ENFD));
@@ -516,11 +500,9 @@ xfs_qm_scall_getqstatv(
         out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
         out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
 
-        if (q) {
-                uip = q->qi_uquotaip;
-                gip = q->qi_gquotaip;
-                pip = q->qi_pquotaip;
-        }
+        uip = q->qi_uquotaip;
+        gip = q->qi_gquotaip;
+        pip = q->qi_pquotaip;
         if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
                 if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
                                         0, 0, &uip) == 0)
@@ -555,14 +537,13 @@ xfs_qm_scall_getqstatv(
                 if (temppqip)
                         IRELE(pip);
         }
-        if (q) {
-                out->qs_incoredqs = q->qi_dquots;
-                out->qs_btimelimit = q->qi_btimelimit;
-                out->qs_itimelimit = q->qi_itimelimit;
-                out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-                out->qs_bwarnlimit = q->qi_bwarnlimit;
-                out->qs_iwarnlimit = q->qi_iwarnlimit;
-        }
+        out->qs_incoredqs = q->qi_dquots;
+        out->qs_btimelimit = q->qi_btimelimit;
+        out->qs_itimelimit = q->qi_itimelimit;
+        out->qs_rtbtimelimit = q->qi_rtbtimelimit;
+        out->qs_bwarnlimit = q->qi_bwarnlimit;
+        out->qs_iwarnlimit = q->qi_iwarnlimit;
+
         return 0;
 }