diff options
Diffstat (limited to 'fs/ceph/caps.c')
| -rw-r--r-- | fs/ceph/caps.c | 42 |
1 files changed, 31 insertions, 11 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 94fd76d04683..68c78be19d5b 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2,7 +2,7 @@ #include <linux/fs.h> #include <linux/kernel.h> -#include <linux/sched.h> +#include <linux/sched/signal.h> #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/wait.h> @@ -867,7 +867,7 @@ int __ceph_caps_file_wanted(struct ceph_inode_info *ci) /* * Return caps we have registered with the MDS(s) as 'wanted'. */ -int __ceph_caps_mds_wanted(struct ceph_inode_info *ci) +int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check) { struct ceph_cap *cap; struct rb_node *p; @@ -875,7 +875,7 @@ int __ceph_caps_mds_wanted(struct ceph_inode_info *ci) for (p = rb_first(&ci->i_caps); p; p = rb_next(p)) { cap = rb_entry(p, struct ceph_cap, ci_node); - if (!__cap_is_valid(cap)) + if (check && !__cap_is_valid(cap)) continue; if (cap == ci->i_auth_cap) mds_wanted |= cap->mds_wanted; @@ -1184,6 +1184,13 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap, delayed = 1; } ci->i_ceph_flags &= ~(CEPH_I_NODELAY | CEPH_I_FLUSH); + if (want & ~cap->mds_wanted) { + /* user space may open/close single file frequently. + * This avoids droping mds_wanted immediately after + * requesting new mds_wanted. + */ + __cap_set_timeouts(mdsc, ci); + } cap->issued &= retain; /* drop bits we don't want */ if (cap->implemented & ~cap->issued) { @@ -2084,8 +2091,6 @@ int ceph_fsync(struct file *file, loff_t start, loff_t end, int datasync) dout("fsync %p%s\n", inode, datasync ? " datasync" : ""); - ceph_sync_write_wait(inode); - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); if (ret < 0) goto out; @@ -2477,23 +2482,22 @@ again: if (ci->i_ceph_flags & CEPH_I_CAP_DROPPED) { int mds_wanted; - if (ACCESS_ONCE(mdsc->fsc->mount_state) == + if (READ_ONCE(mdsc->fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) { dout("get_cap_refs %p forced umount\n", inode); *err = -EIO; ret = 1; goto out_unlock; } - mds_wanted = __ceph_caps_mds_wanted(ci); - if ((mds_wanted & need) != need) { + mds_wanted = __ceph_caps_mds_wanted(ci, false); + if (need & ~(mds_wanted & need)) { dout("get_cap_refs %p caps were dropped" " (session killed?)\n", inode); *err = -ESTALE; ret = 1; goto out_unlock; } - if ((mds_wanted & file_wanted) == - (file_wanted & (CEPH_CAP_FILE_RD|CEPH_CAP_FILE_WR))) + if (!(file_wanted & ~mds_wanted)) ci->i_ceph_flags &= ~CEPH_I_CAP_DROPPED; } @@ -3404,6 +3408,7 @@ retry: tcap->implemented |= issued; if (cap == ci->i_auth_cap) ci->i_auth_cap = tcap; + if (!list_empty(&ci->i_cap_flush_list) && ci->i_auth_cap == tcap) { spin_lock(&mdsc->cap_dirty_lock); @@ -3417,9 +3422,18 @@ retry: } else if (tsession) { /* add placeholder for the export tagert */ int flag = (cap == ci->i_auth_cap) ? CEPH_CAP_FLAG_AUTH : 0; + tcap = new_cap; ceph_add_cap(inode, tsession, t_cap_id, -1, issued, 0, t_seq - 1, t_mseq, (u64)-1, flag, &new_cap); + if (!list_empty(&ci->i_cap_flush_list) && + ci->i_auth_cap == tcap) { + spin_lock(&mdsc->cap_dirty_lock); + list_move_tail(&ci->i_flushing_item, + &tcap->session->s_cap_flushing); + spin_unlock(&mdsc->cap_dirty_lock); + } + __ceph_remove_cap(cap, false); goto out_unlock; } @@ -3924,9 +3938,10 @@ int ceph_encode_inode_release(void **p, struct inode *inode, } int ceph_encode_dentry_release(void **p, struct dentry *dentry, + struct inode *dir, int mds, int drop, int unless) { - struct inode *dir = d_inode(dentry->d_parent); + struct dentry *parent = NULL; struct ceph_mds_request_release *rel = *p; struct ceph_dentry_info *di = ceph_dentry(dentry); int force = 0; @@ -3941,9 +3956,14 @@ int ceph_encode_dentry_release(void **p, struct dentry *dentry, spin_lock(&dentry->d_lock); if (di->lease_session && di->lease_session->s_mds == mds) force = 1; + if (!dir) { + parent = dget(dentry->d_parent); + dir = d_inode(parent); + } spin_unlock(&dentry->d_lock); ret = ceph_encode_inode_release(p, dir, mds, drop, unless, force); + dput(parent); spin_lock(&dentry->d_lock); if (ret && di->lease_session && di->lease_session->s_mds == mds) { |