ceph: pass filp to ceph_get_caps()

Also change several other functions' arguments, no logical changes.
This is preparetion for later patch that checks filp error.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

4 files changed, 46 insertions, 42 deletions

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index b3c8b886bf64..2d6e23e32e30 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -323,7 +323,8 @@ static int start_read(struct inode *inode, struct ceph_rw_context *rw_ctx,
 		/* caller of readpages does not hold buffer and read caps
 		 * (fadvise, madvise and readahead cases) */
 		int want = CEPH_CAP_FILE_CACHE;
-		ret = ceph_try_get_caps(ci, CEPH_CAP_FILE_RD, want, true, &got);
+		ret = ceph_try_get_caps(inode, CEPH_CAP_FILE_RD, want,
+					true, &got);
 		if (ret < 0) {
 			dout("start_read %p, error getting cap\n", inode);
 		} else if (!(got & want)) {
@@ -1452,7 +1453,8 @@ static vm_fault_t ceph_filemap_fault(struct vm_fault *vmf)
 		want = CEPH_CAP_FILE_CACHE;
 
 	got = 0;
-	err = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, -1, &got, &pinned_page);
+	err = ceph_get_caps(vma->vm_file, CEPH_CAP_FILE_RD, want, -1,
+			    &got, &pinned_page);
 	if (err < 0)
 		goto out_restore;
 
@@ -1568,7 +1570,7 @@ static vm_fault_t ceph_page_mkwrite(struct vm_fault *vmf)
 		want = CEPH_CAP_FILE_BUFFER;
 
 	got = 0;
-	err = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, off + len,
+	err = ceph_get_caps(vma->vm_file, CEPH_CAP_FILE_WR, want, off + len,
 			    &got, NULL);
 	if (err < 0)
 		goto out_free;
@@ -1989,10 +1991,11 @@ out:
 	return err;
 }
 
-int ceph_pool_perm_check(struct ceph_inode_info *ci, int need)
+int ceph_pool_perm_check(struct inode *inode, int need)
 {
-	s64 pool;
+	struct ceph_inode_info *ci = ceph_inode(inode);
 	struct ceph_string *pool_ns;
+	s64 pool;
 	int ret, flags;
 
 	if (ci->i_vino.snap != CEPH_NOSNAP) {
@@ -2004,7 +2007,7 @@ int ceph_pool_perm_check(struct ceph_inode_info *ci, int need)
 		return 0;
 	}
 
-	if (ceph_test_mount_opt(ceph_inode_to_client(&ci->vfs_inode),
+	if (ceph_test_mount_opt(ceph_inode_to_client(inode),
 				NOPOOLPERM))
 		return 0;
 
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 321ba9b30968..bde81aaa3750 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2570,10 +2570,10 @@ static void __take_cap_refs(struct ceph_inode_info *ci, int got,
  *
  * FIXME: how does a 0 return differ from -EAGAIN?
  */
-static int try_get_cap_refs(struct ceph_inode_info *ci, int need, int want,
+static int try_get_cap_refs(struct inode *inode, int need, int want,
 			    loff_t endoff, bool nonblock, int *got)
 {
-	struct inode *inode = &ci->vfs_inode;
+	struct ceph_inode_info *ci = ceph_inode(inode);
 	struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
 	int ret = 0;
 	int have, implemented;
@@ -2741,18 +2741,18 @@ static void check_max_size(struct inode *inode, loff_t endoff)
 		ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL);
 }
 
-int ceph_try_get_caps(struct ceph_inode_info *ci, int need, int want,
+int ceph_try_get_caps(struct inode *inode, int need, int want,
 		      bool nonblock, int *got)
 {
 	int ret;
 
 	BUG_ON(need & ~CEPH_CAP_FILE_RD);
 	BUG_ON(want & ~(CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO|CEPH_CAP_FILE_SHARED));
-	ret = ceph_pool_perm_check(ci, need);
+	ret = ceph_pool_perm_check(inode, need);
 	if (ret < 0)
 		return ret;
 
-	ret = try_get_cap_refs(ci, need, want, 0, nonblock, got);
+	ret = try_get_cap_refs(inode, need, want, 0, nonblock, got);
 	return ret == -EAGAIN ? 0 : ret;
 }
 
@@ -2761,21 +2761,23 @@ int ceph_try_get_caps(struct ceph_inode_info *ci, int need, int want,
  * due to a small max_size, make sure we check_max_size (and possibly
  * ask the mds) so we don't get hung up indefinitely.
  */
-int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
+int ceph_get_caps(struct file *filp, int need, int want,
 		  loff_t endoff, int *got, struct page **pinned_page)
 {
+	struct inode *inode = file_inode(filp);
+	struct ceph_inode_info *ci = ceph_inode(inode);
 	int _got, ret;
 
-	ret = ceph_pool_perm_check(ci, need);
+	ret = ceph_pool_perm_check(inode, need);
 	if (ret < 0)
 		return ret;
 
 	while (true) {
 		if (endoff > 0)
-			check_max_size(&ci->vfs_inode, endoff);
+			check_max_size(inode, endoff);
 
 		_got = 0;
-		ret = try_get_cap_refs(ci, need, want, endoff,
+		ret = try_get_cap_refs(inode, need, want, endoff,
 				       false, &_got);
 		if (ret == -EAGAIN)
 			continue;
@@ -2783,8 +2785,8 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
 			DEFINE_WAIT_FUNC(wait, woken_wake_function);
 			add_wait_queue(&ci->i_cap_wq, &wait);
 
-			while (!(ret = try_get_cap_refs(ci, need, want, endoff,
-							true, &_got))) {
+			while (!(ret = try_get_cap_refs(inode, need, want,
+							endoff, true, &_got))) {
 				if (signal_pending(current)) {
 					ret = -ERESTARTSYS;
 					break;
@@ -2799,7 +2801,7 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
 		if (ret < 0) {
 			if (ret == -ESTALE) {
 				/* session was killed, try renew caps */
-				ret = ceph_renew_caps(&ci->vfs_inode);
+				ret = ceph_renew_caps(inode);
 				if (ret == 0)
 					continue;
 			}
@@ -2808,9 +2810,9 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
 
 		if (ci->i_inline_version != CEPH_INLINE_NONE &&
 		    (_got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) &&
-		    i_size_read(&ci->vfs_inode) > 0) {
+		    i_size_read(inode) > 0) {
 			struct page *page =
-				find_get_page(ci->vfs_inode.i_mapping, 0);
+				find_get_page(inode->i_mapping, 0);
 			if (page) {
 				if (PageUptodate(page)) {
 					*pinned_page = page;
@@ -2829,7 +2831,7 @@ int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
 			 * getattr request will bring inline data into
 			 * page cache
 			 */
-			ret = __ceph_do_getattr(&ci->vfs_inode, NULL,
+			ret = __ceph_do_getattr(inode, NULL,
 						CEPH_STAT_CAP_INLINE_DATA,
 						true);
 			if (ret < 0)
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 75a1d12ec46d..fb007b75fb17 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1262,7 +1262,8 @@ again:
 		want = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO;
 	else
 		want = CEPH_CAP_FILE_CACHE;
-	ret = ceph_get_caps(ci, CEPH_CAP_FILE_RD, want, -1, &got, &pinned_page);
+	ret = ceph_get_caps(filp, CEPH_CAP_FILE_RD, want, -1,
+			    &got, &pinned_page);
 	if (ret < 0)
 		return ret;
 
@@ -1459,7 +1460,7 @@ retry_snap:
 	else
 		want = CEPH_CAP_FILE_BUFFER;
 	got = 0;
-	err = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, pos + count,
+	err = ceph_get_caps(file, CEPH_CAP_FILE_WR, want, pos + count,
 			    &got, NULL);
 	if (err < 0)
 		goto out;
@@ -1783,7 +1784,7 @@ static long ceph_fallocate(struct file *file, int mode,
 	else
 		want = CEPH_CAP_FILE_BUFFER;
 
-	ret = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, endoff, &got, NULL);
+	ret = ceph_get_caps(file, CEPH_CAP_FILE_WR, want, endoff, &got, NULL);
 	if (ret < 0)
 		goto unlock;
 
@@ -1812,16 +1813,15 @@ unlock:
  * src_ci.  Two attempts are made to obtain both caps, and an error is return if
  * this fails; zero is returned on success.
  */
-static int get_rd_wr_caps(struct ceph_inode_info *src_ci,
-			  loff_t src_endoff, int *src_got,
-			  struct ceph_inode_info *dst_ci,
+static int get_rd_wr_caps(struct file *src_filp, int *src_got,
+			  struct file *dst_filp,
 			  loff_t dst_endoff, int *dst_got)
 {
 	int ret = 0;
 	bool retrying = false;
 
 retry_caps:
-	ret = ceph_get_caps(dst_ci, CEPH_CAP_FILE_WR, CEPH_CAP_FILE_BUFFER,
+	ret = ceph_get_caps(dst_filp, CEPH_CAP_FILE_WR, CEPH_CAP_FILE_BUFFER,
 			    dst_endoff, dst_got, NULL);
 	if (ret < 0)
 		return ret;
@@ -1831,24 +1831,24 @@ retry_caps:
 	 * we would risk a deadlock by using ceph_get_caps.  Thus, we'll do some
 	 * retry dance instead to try to get both capabilities.
 	 */
-	ret = ceph_try_get_caps(src_ci, CEPH_CAP_FILE_RD, CEPH_CAP_FILE_SHARED,
+	ret = ceph_try_get_caps(file_inode(src_filp),
+				CEPH_CAP_FILE_RD, CEPH_CAP_FILE_SHARED,
 				false, src_got);
 	if (ret <= 0) {
 		/* Start by dropping dst_ci caps and getting src_ci caps */
-		ceph_put_cap_refs(dst_ci, *dst_got);
+		ceph_put_cap_refs(ceph_inode(file_inode(dst_filp)), *dst_got);
 		if (retrying) {
 			if (!ret)
 				/* ceph_try_get_caps masks EAGAIN */
 				ret = -EAGAIN;
 			return ret;
 		}
-		ret = ceph_get_caps(src_ci, CEPH_CAP_FILE_RD,
-				    CEPH_CAP_FILE_SHARED, src_endoff,
-				    src_got, NULL);
+		ret = ceph_get_caps(src_filp, CEPH_CAP_FILE_RD,
+				    CEPH_CAP_FILE_SHARED, -1, src_got, NULL);
 		if (ret < 0)
 			return ret;
 		/*... drop src_ci caps too, and retry */
-		ceph_put_cap_refs(src_ci, *src_got);
+		ceph_put_cap_refs(ceph_inode(file_inode(src_filp)), *src_got);
 		retrying = true;
 		goto retry_caps;
 	}
@@ -1960,8 +1960,8 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
 	 * clients may have dirty data in their caches.  And OSDs know nothing
 	 * about caps, so they can't safely do the remote object copies.
 	 */
-	err = get_rd_wr_caps(src_ci, (src_off + len), &src_got,
-			     dst_ci, (dst_off + len), &dst_got);
+	err = get_rd_wr_caps(src_file, &src_got,
+			     dst_file, (dst_off + len), &dst_got);
 	if (err < 0) {
 		dout("get_rd_wr_caps returned %d\n", err);
 		ret = -EOPNOTSUPP;
@@ -2018,9 +2018,8 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
 			goto out;
 		}
 		len -= ret;
-		err = get_rd_wr_caps(src_ci, (src_off + len),
-				     &src_got, dst_ci,
-				     (dst_off + len), &dst_got);
+		err = get_rd_wr_caps(src_file, &src_got,
+				     dst_file, (dst_off + len), &dst_got);
 		if (err < 0)
 			goto out;
 		err = is_file_size_ok(src_inode, dst_inode,
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 66dfe5ebf006..1452f62445c3 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -1062,9 +1062,9 @@ extern int ceph_encode_dentry_release(void **p, struct dentry *dn,
 				      struct inode *dir,
 				      int mds, int drop, int unless);
 
-extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,
+extern int ceph_get_caps(struct file *filp, int need, int want,
 			 loff_t endoff, int *got, struct page **pinned_page);
-extern int ceph_try_get_caps(struct ceph_inode_info *ci,
+extern int ceph_try_get_caps(struct inode *inode,
 			     int need, int want, bool nonblock, int *got);
 
 /* for counting open files by mode */
@@ -1075,7 +1075,7 @@ extern void ceph_put_fmode(struct ceph_inode_info *ci, int mode);
 extern const struct address_space_operations ceph_aops;
 extern int ceph_mmap(struct file *file, struct vm_area_struct *vma);
 extern int ceph_uninline_data(struct file *filp, struct page *locked_page);
-extern int ceph_pool_perm_check(struct ceph_inode_info *ci, int need);
+extern int ceph_pool_perm_check(struct inode *inode, int need);
 extern void ceph_pool_perm_destroy(struct ceph_mds_client* mdsc);
 
 /* file.c */