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Commit 4b217630 authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

ext4: fix the number of credits needed for ext4_ext_migrate() 



The migration ioctl creates a temporary inode.  Since this inode is
never linked to a directory, we don't need to reserve journal credits
required for modifying the directory.

Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
parent 8dcfaad2

fs/ext4/migrate.c

+7 −4
Original line number Diff line number Diff line
@@ -456,11 +456,14 @@ int ext4_ext_migrate(struct inode *inode) 
		 */

		return retval;



	/*

	 * Worst case we can touch the allocation bitmaps, a bgd

	 * block, and a block to link in the orphan list.  We do need

	 * need to worry about credits for modifying the quota inode.

	 */

	handle = ext4_journal_start(inode, EXT4_HT_MIGRATE,

					EXT4_DATA_TRANS_BLOCKS(inode->i_sb) +

					EXT4_INDEX_EXTRA_TRANS_BLOCKS + 3 +

					EXT4_MAXQUOTAS_INIT_BLOCKS(inode->i_sb)

					+ 1);

		4 + EXT4_MAXQUOTAS_TRANS_BLOCKS(inode->i_sb));



	if (IS_ERR(handle)) {

		retval = PTR_ERR(handle);

		return retval;