ceph: do not call __mark_dirty_inode under i_lock

The __mark_dirty_inode helper now takes i_lock as of 250df6ed.  Fix the
one ceph callers that held i_lock (__ceph_mark_dirty_caps) to return the
flags value so that the callers can do it outside of i_lock.

Signed-off-by: Sage Weil <sage@newdream.net>

5 files changed, 23 insertions, 12 deletions

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 010ba9c52e9b..9fa08662a88d 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1331,10 +1331,11 @@ static void ceph_flush_snaps(struct ceph_inode_info *ci)
 }
 
 /*
- * Mark caps dirty.  If inode is newly dirty, add to the global dirty
- * list.
+ * Mark caps dirty.  If inode is newly dirty, return the dirty flags.
+ * Caller is then responsible for calling __mark_inode_dirty with the
+ * returned flags value.
  */
-void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask)
+int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask)
 {
         struct ceph_mds_client *mdsc =
                 ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
@@ -1365,9 +1366,8 @@ void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask)
         if (((was | ci->i_flushing_caps) & CEPH_CAP_FILE_BUFFER) &&
             (mask & CEPH_CAP_FILE_BUFFER))
                 dirty |= I_DIRTY_DATASYNC;
-        if (dirty)
-                __mark_inode_dirty(inode, dirty);
         __cap_delay_requeue(mdsc, ci);
+        return dirty;
 }
 
 /*
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 159b512d5a27..203252d88d9f 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -734,9 +734,12 @@ retry_snap:
                 }
         }
         if (ret >= 0) {
+                int dirty;
                 spin_lock(&inode->i_lock);
-                __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR);
+                dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR);
                 spin_unlock(&inode->i_lock);
+                if (dirty)
+                        __mark_inode_dirty(inode, dirty);
         }
 
 out:
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index b54c97da1c43..03d6dafda61f 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -1567,6 +1567,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
         int release = 0, dirtied = 0;
         int mask = 0;
         int err = 0;
+        int inode_dirty_flags = 0;
 
         if (ceph_snap(inode) != CEPH_NOSNAP)
                 return -EROFS;
@@ -1725,13 +1726,16 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
                 dout("setattr %p ATTR_FILE ... hrm!\n", inode);
 
         if (dirtied) {
-                __ceph_mark_dirty_caps(ci, dirtied);
+                inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied);
                 inode->i_ctime = CURRENT_TIME;
         }
 
         release &= issued;
         spin_unlock(&inode->i_lock);
 
+        if (inode_dirty_flags)
+                __mark_inode_dirty(inode, inode_dirty_flags);
+
         if (mask) {
                 req->r_inode = igrab(inode);
                 req->r_inode_drop = release;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 619fe719968f..b1f1b8bb1271 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -506,7 +506,7 @@ static inline int __ceph_caps_dirty(struct ceph_inode_info *ci)
 {
         return ci->i_dirty_caps | ci->i_flushing_caps;
 }
-extern void __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask);
+extern int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask);
 
 extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask);
 extern int __ceph_caps_used(struct ceph_inode_info *ci);
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 8c9eba6ef9df..f2b628696180 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -703,6 +703,7 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
         struct ceph_inode_xattr *xattr = NULL;
         int issued;
         int required_blob_size;
+        int dirty;
 
         if (ceph_snap(inode) != CEPH_NOSNAP)
                 return -EROFS;
@@ -763,11 +764,12 @@ retry:
         dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued));
         err = __set_xattr(ci, newname, name_len, newval,
                           val_len, 1, 1, 1, &xattr);
-        __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
+        dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
         ci->i_xattrs.dirty = true;
         inode->i_ctime = CURRENT_TIME;
         spin_unlock(&inode->i_lock);
-
+        if (dirty)
+                __mark_inode_dirty(inode, dirty);
         return err;
 
 do_sync:
@@ -810,6 +812,7 @@ int ceph_removexattr(struct dentry *dentry, const char *name)
         struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
         int issued;
         int err;
+        int dirty;
 
         if (ceph_snap(inode) != CEPH_NOSNAP)
                 return -EROFS;
@@ -833,12 +836,13 @@ int ceph_removexattr(struct dentry *dentry, const char *name)
                 goto do_sync;
 
         err = __remove_xattr_by_name(ceph_inode(inode), name);
-        __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
+        dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
         ci->i_xattrs.dirty = true;
         inode->i_ctime = CURRENT_TIME;
 
         spin_unlock(&inode->i_lock);
-
+        if (dirty)
+                __mark_inode_dirty(inode, dirty);
         return err;
 do_sync:
         spin_unlock(&inode->i_lock);