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-rw-r--r--fs/ceph/caps.c42
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) {