Merge tag 'for-f2fs-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "This patch-set includes the following major enhancement patches:
   - remount_fs callback function
   - restore parent inode number to enhance the fsync performance
   - xattr security labels
   - reduce the number of redundant lock/unlock data pages
   - avoid frequent write_inode calls

  The other minor bug fixes are as follows.
   - endian conversion bugs
   - various bugs in the roll-forward recovery routine"

* tag 'for-f2fs-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (56 commits)
  f2fs: fix to recover i_size from roll-forward
  f2fs: remove the unused argument "sbi" of func destroy_fsync_dnodes()
  f2fs: remove reusing any prefree segments
  f2fs: code cleanup and simplify in func {find/add}_gc_inode
  f2fs: optimize the init_dirty_segmap function
  f2fs: fix an endian conversion bug detected by sparse
  f2fs: fix crc endian conversion
  f2fs: add remount_fs callback support
  f2fs: recover wrong pino after checkpoint during fsync
  f2fs: optimize do_write_data_page()
  f2fs: make locate_dirty_segment() as static
  f2fs: remove unnecessary parameter "offset" from __add_sum_entry()
  f2fs: avoid freqeunt write_inode calls
  f2fs: optimise the truncate_data_blocks_range() range
  f2fs: use the F2FS specific flags in f2fs_ioctl()
  f2fs: sync dir->i_size with its block allocation
  f2fs: fix i_blocks translation on various types of files
  f2fs: set sb->s_fs_info before calling parse_options()
  f2fs: support xattr security labels
  f2fs: fix iget/iput of dir during recovery
  ...

1 files changed, 62 insertions, 47 deletions

diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c
index 600bb5efe60..9d1cd423450 100644
--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -13,6 +13,7 @@
 #include "f2fs.h"
 #include "node.h"
 #include "acl.h"
+#include "xattr.h"
 
 static unsigned long dir_blocks(struct inode *inode)
 {
@@ -215,9 +216,9 @@ struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
 
 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p)
 {
-	struct page *page = NULL;
-	struct f2fs_dir_entry *de = NULL;
-	struct f2fs_dentry_block *dentry_blk = NULL;
+	struct page *page;
+	struct f2fs_dir_entry *de;
+	struct f2fs_dentry_block *dentry_blk;
 
 	page = get_lock_data_page(dir, 0);
 	if (IS_ERR(page))
@@ -264,15 +265,10 @@ void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
 	f2fs_put_page(page, 1);
 }
 
-void init_dent_inode(const struct qstr *name, struct page *ipage)
+static void init_dent_inode(const struct qstr *name, struct page *ipage)
 {
 	struct f2fs_node *rn;
 
-	if (IS_ERR(ipage))
-		return;
-
-	wait_on_page_writeback(ipage);
-
 	/* copy name info. to this inode page */
 	rn = (struct f2fs_node *)page_address(ipage);
 	rn->i.i_namelen = cpu_to_le32(name->len);
@@ -280,14 +276,15 @@ void init_dent_inode(const struct qstr *name, struct page *ipage)
 	set_page_dirty(ipage);
 }
 
-static int make_empty_dir(struct inode *inode, struct inode *parent)
+static int make_empty_dir(struct inode *inode,
+		struct inode *parent, struct page *page)
 {
 	struct page *dentry_page;
 	struct f2fs_dentry_block *dentry_blk;
 	struct f2fs_dir_entry *de;
 	void *kaddr;
 
-	dentry_page = get_new_data_page(inode, 0, true);
+	dentry_page = get_new_data_page(inode, page, 0, true);
 	if (IS_ERR(dentry_page))
 		return PTR_ERR(dentry_page);
 
@@ -317,63 +314,76 @@ static int make_empty_dir(struct inode *inode, struct inode *parent)
 	return 0;
 }
 
-static int init_inode_metadata(struct inode *inode,
+static struct page *init_inode_metadata(struct inode *inode,
 		struct inode *dir, const struct qstr *name)
 {
+	struct page *page;
+	int err;
+
 	if (is_inode_flag_set(F2FS_I(inode), FI_NEW_INODE)) {
-		int err;
-		err = new_inode_page(inode, name);
-		if (err)
-			return err;
+		page = new_inode_page(inode, name);
+		if (IS_ERR(page))
+			return page;
 
 		if (S_ISDIR(inode->i_mode)) {
-			err = make_empty_dir(inode, dir);
-			if (err) {
-				remove_inode_page(inode);
-				return err;
-			}
+			err = make_empty_dir(inode, dir, page);
+			if (err)
+				goto error;
 		}
 
 		err = f2fs_init_acl(inode, dir);
-		if (err) {
-			remove_inode_page(inode);
-			return err;
-		}
+		if (err)
+			goto error;
+
+		err = f2fs_init_security(inode, dir, name, page);
+		if (err)
+			goto error;
+
+		wait_on_page_writeback(page);
 	} else {
-		struct page *ipage;
-		ipage = get_node_page(F2FS_SB(dir->i_sb), inode->i_ino);
-		if (IS_ERR(ipage))
-			return PTR_ERR(ipage);
-		set_cold_node(inode, ipage);
-		init_dent_inode(name, ipage);
-		f2fs_put_page(ipage, 1);
+		page = get_node_page(F2FS_SB(dir->i_sb), inode->i_ino);
+		if (IS_ERR(page))
+			return page;
+
+		wait_on_page_writeback(page);
+		set_cold_node(inode, page);
 	}
+
+	init_dent_inode(name, page);
+
+	/*
+	 * This file should be checkpointed during fsync.
+	 * We lost i_pino from now on.
+	 */
 	if (is_inode_flag_set(F2FS_I(inode), FI_INC_LINK)) {
+		file_lost_pino(inode);
 		inc_nlink(inode);
-		update_inode_page(inode);
 	}
-	return 0;
+	return page;
+
+error:
+	f2fs_put_page(page, 1);
+	remove_inode_page(inode);
+	return ERR_PTR(err);
 }
 
 static void update_parent_metadata(struct inode *dir, struct inode *inode,
 						unsigned int current_depth)
 {
-	bool need_dir_update = false;
-
 	if (is_inode_flag_set(F2FS_I(inode), FI_NEW_INODE)) {
 		if (S_ISDIR(inode->i_mode)) {
 			inc_nlink(dir);
-			need_dir_update = true;
+			set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
 		}
 		clear_inode_flag(F2FS_I(inode), FI_NEW_INODE);
 	}
 	dir->i_mtime = dir->i_ctime = CURRENT_TIME;
 	if (F2FS_I(dir)->i_current_depth != current_depth) {
 		F2FS_I(dir)->i_current_depth = current_depth;
-		need_dir_update = true;
+		set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
 	}
 
-	if (need_dir_update)
+	if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR))
 		update_inode_page(dir);
 	else
 		mark_inode_dirty(dir);
@@ -423,6 +433,7 @@ int __f2fs_add_link(struct inode *dir, const struct qstr *name, struct inode *in
 	struct page *dentry_page = NULL;
 	struct f2fs_dentry_block *dentry_blk = NULL;
 	int slots = GET_DENTRY_SLOTS(namelen);
+	struct page *page;
 	int err = 0;
 	int i;
 
@@ -448,7 +459,7 @@ start:
 	bidx = dir_block_index(level, (le32_to_cpu(dentry_hash) % nbucket));
 
 	for (block = bidx; block <= (bidx + nblock - 1); block++) {
-		dentry_page = get_new_data_page(dir, block, true);
+		dentry_page = get_new_data_page(dir, NULL, block, true);
 		if (IS_ERR(dentry_page))
 			return PTR_ERR(dentry_page);
 
@@ -465,12 +476,13 @@ start:
 	++level;
 	goto start;
 add_dentry:
-	err = init_inode_metadata(inode, dir, name);
-	if (err)
-		goto fail;
-
 	wait_on_page_writeback(dentry_page);
 
+	page = init_inode_metadata(inode, dir, name);
+	if (IS_ERR(page)) {
+		err = PTR_ERR(page);
+		goto fail;
+	}
 	de = &dentry_blk->dentry[bit_pos];
 	de->hash_code = dentry_hash;
 	de->name_len = cpu_to_le16(namelen);
@@ -481,11 +493,14 @@ add_dentry:
 		test_and_set_bit_le(bit_pos + i, &dentry_blk->dentry_bitmap);
 	set_page_dirty(dentry_page);
 
-	update_parent_metadata(dir, inode, current_depth);
-
-	/* update parent inode number before releasing dentry page */
+	/* we don't need to mark_inode_dirty now */
 	F2FS_I(inode)->i_pino = dir->i_ino;
+	update_inode(inode, page);
+	f2fs_put_page(page, 1);
+
+	update_parent_metadata(dir, inode, current_depth);
 fail:
+	clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR);
 	kunmap(dentry_page);
 	f2fs_put_page(dentry_page, 1);
 	return err;