ext4: Don't set EXTENTS_FL flag for fast symlinks (b8356c46) · Commits · 戴 / test

For fast symbolic links, the file content is stored in the i_block[] array, which is not compatible with the new file extents format. e2fsck reports error on such files because EXTENTS_FL is set. Don't set the EXTENTS_FL flag when creating fast symlinks. In the case of file migration, skip fast symbolic links. Signed-off-by:

Valerie Clement <valerie.clement@bull.net> Signed-off-by:

Mingming Cao <cmm@us.ibm.com> Signed-off-by:

"Theodore Ts'o" <tytso@mit.edu>

fs/ext4/migrate.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -414,6 +414,12 @@ int ext4_ext_migrate(struct inode inode, struct file filp,
		if ((EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
		return -EINVAL;

		if (S_ISLNK(inode->i_mode) && inode->i_blocks == 0)
		/*
		* don't migrate fast symlink
		*/
		return retval;

		down_write(&EXT4_I(inode)->i_data_sem);
		handle = ext4_journal_start(inode,
		EXT4_DATA_TRANS_BLOCKS(inode->i_sb) +

fs/ext4/namei.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2223,6 +2223,7 @@ retry:
		inode->i_op = &ext4_fast_symlink_inode_operations;
		memcpy((char*)&EXT4_I(inode)->i_data,symname,l);
		inode->i_size = l-1;
		EXT4_I(inode)->i_flags &= ~EXT4_EXTENTS_FL;
		}
		EXT4_I(inode)->i_disksize = inode->i_size;
		err = ext4_add_nondir(handle, dentry, inode);

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