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authorLuis Henriques <lhenriques@suse.com>2018-01-31 13:53:13 +0300
committerIlya Dryomov <idryomov@gmail.com>2018-04-02 12:17:53 +0300
commit9122eed5281e89bdb02162a8ecb3cc13ffc8985e (patch)
tree76c813dd8c16b85bce3d26cbb9d763d67fbc1d8f /fs/ceph/super.c
parentd557c48db730eaab6b75d4af332c135309b7a6a4 (diff)
downloadlinux-9122eed5281e89bdb02162a8ecb3cc13ffc8985e.tar.xz
ceph: quota: report root dir quota usage in statfs
This commit changes statfs default behaviour when reporting usage statistics. Instead of using the overall filesystem usage, statfs now reports the quota for the filesystem root, if ceph.quota.max_bytes has been set for this inode. If quota hasn't been set, it falls back to the old statfs behaviour. A new mount option is also added ('noquotadf') to disable this behaviour. Signed-off-by: Luis Henriques <lhenriques@suse.com> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/super.c')
-rw-r--r--fs/ceph/super.c27
1 files changed, 24 insertions, 3 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 0fc03c456c50..b33082e6878f 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -76,9 +76,18 @@ static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf)
*/
buf->f_bsize = 1 << CEPH_BLOCK_SHIFT;
buf->f_frsize = 1 << CEPH_BLOCK_SHIFT;
- buf->f_blocks = le64_to_cpu(st.kb) >> (CEPH_BLOCK_SHIFT-10);
- buf->f_bfree = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10);
- buf->f_bavail = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10);
+
+ /*
+ * By default use root quota for stats; fallback to overall filesystem
+ * usage if using 'noquotadf' mount option or if the root dir doesn't
+ * have max_bytes quota set.
+ */
+ if (ceph_test_mount_opt(fsc, NOQUOTADF) ||
+ !ceph_quota_update_statfs(fsc, buf)) {
+ buf->f_blocks = le64_to_cpu(st.kb) >> (CEPH_BLOCK_SHIFT-10);
+ buf->f_bfree = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10);
+ buf->f_bavail = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10);
+ }
buf->f_files = le64_to_cpu(st.num_objects);
buf->f_ffree = -1;
@@ -151,6 +160,8 @@ enum {
Opt_acl,
#endif
Opt_noacl,
+ Opt_quotadf,
+ Opt_noquotadf,
};
static match_table_t fsopt_tokens = {
@@ -187,6 +198,8 @@ static match_table_t fsopt_tokens = {
{Opt_acl, "acl"},
#endif
{Opt_noacl, "noacl"},
+ {Opt_quotadf, "quotadf"},
+ {Opt_noquotadf, "noquotadf"},
{-1, NULL}
};
@@ -334,6 +347,12 @@ static int parse_fsopt_token(char *c, void *private)
case Opt_norequire_active_mds:
fsopt->flags |= CEPH_MOUNT_OPT_MOUNTWAIT;
break;
+ case Opt_quotadf:
+ fsopt->flags &= ~CEPH_MOUNT_OPT_NOQUOTADF;
+ break;
+ case Opt_noquotadf:
+ fsopt->flags |= CEPH_MOUNT_OPT_NOQUOTADF;
+ break;
#ifdef CONFIG_CEPH_FS_POSIX_ACL
case Opt_acl:
fsopt->sb_flags |= SB_POSIXACL;
@@ -520,6 +539,8 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
}
if (fsopt->flags & CEPH_MOUNT_OPT_NOPOOLPERM)
seq_puts(m, ",nopoolperm");
+ if (fsopt->flags & CEPH_MOUNT_OPT_NOQUOTADF)
+ seq_puts(m, ",noquotadf");
#ifdef CONFIG_CEPH_FS_POSIX_ACL
if (fsopt->sb_flags & SB_POSIXACL)