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| author |   Luis Henriques <lhenriques@suse.com> | 2018-01-12 17:19:28 +0000 |
|---|---|---|
| committer |   Ilya Dryomov <idryomov@gmail.com> | 2018-04-02 11:17:53 +0200 |
| commit | e3161f17d92699ce6ca3b7988131b10ad4035cf9 (patch) | |
| tree | 64517e87740efded4fd4a962343ba81bef5d6be9 /fs/ceph/quota.c | |
| parent | ceph: fix root quota realm check (diff) | |
| download | linux-dev-e3161f17d92699ce6ca3b7988131b10ad4035cf9.tar.xz linux-dev-e3161f17d92699ce6ca3b7988131b10ad4035cf9.zip | |
ceph: quota: cache inode pointer in ceph_snap_realm
Keep a pointer to the inode in struct ceph_snap_realm. This allows to
optimize functions that walk the realms hierarchy (e.g. in quotas).
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/quota.c')
| -rw-r--r-- | fs/ceph/quota.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/fs/ceph/quota.c b/fs/ceph/quota.c index 121819baeb58..c561a85ea8b1 100644 --- a/fs/ceph/quota.c +++ b/fs/ceph/quota.c @@ -83,7 +83,6 @@ static struct ceph_snap_realm *get_quota_realm(struct ceph_mds_client *mdsc, { struct ceph_inode_info *ci = NULL; struct ceph_snap_realm *realm, *next; - struct ceph_vino vino; struct inode *in; bool has_quota; @@ -97,13 +96,12 @@ static struct ceph_snap_realm *get_quota_realm(struct ceph_mds_client *mdsc, pr_err_ratelimited("get_quota_realm: ino (%llx.%llx) " "null i_snap_realm\n", ceph_vinop(inode)); while (realm) { - vino.ino = realm->ino; - vino.snap = CEPH_NOSNAP; - in = ceph_find_inode(inode->i_sb, vino); - if (!in) { - pr_warn("Failed to find inode for %llu\n", vino.ino); + spin_lock(&realm->inodes_with_caps_lock); + in = realm->inode ? igrab(realm->inode) : NULL; + spin_unlock(&realm->inodes_with_caps_lock); + if (!in) break; - } + ci = ceph_inode(in); has_quota = ceph_has_quota(ci); iput(in); @@ -161,7 +159,6 @@ static bool check_quota_exceeded(struct inode *inode, enum quota_check_op op, struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; struct ceph_inode_info *ci; struct ceph_snap_realm *realm, *next; - struct ceph_vino vino; struct inode *in; u64 max, rvalue; bool exceeded = false; @@ -177,13 +174,12 @@ static bool check_quota_exceeded(struct inode *inode, enum quota_check_op op, pr_err_ratelimited("check_quota_exceeded: ino (%llx.%llx) " "null i_snap_realm\n", ceph_vinop(inode)); while (realm) { - vino.ino = realm->ino; - vino.snap = CEPH_NOSNAP; - in = ceph_find_inode(inode->i_sb, vino); - if (!in) { - pr_warn("Failed to find inode for %llu\n", vino.ino); + spin_lock(&realm->inodes_with_caps_lock); + in = realm->inode ? igrab(realm->inode) : NULL; + spin_unlock(&realm->inodes_with_caps_lock); + if (!in) break; - } + ci = ceph_inode(in); spin_lock(&ci->i_ceph_lock); if (op == QUOTA_CHECK_MAX_FILES_OP) { |