Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c334b113 authored by Josef Bacik's avatar Josef Bacik Committed by Al Viro
Browse files

Ext4: handle SEEK_HOLE/SEEK_DATA generically 



Since Ext4 has its own lseek we need to make sure it handles
SEEK_HOLE/SEEK_DATA.  For now just do the same thing that is done in the generic
case, somebody else can come along and make it do fancy things later.  Thanks,

Signed-off-by: default avatarJosef Bacik <josef@redhat.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent b2675157

fs/ext4/file.c

+21 −0
Original line number Diff line number Diff line
@@ -236,6 +236,27 @@ loff_t ext4_llseek(struct file *file, loff_t offset, int origin) 
		}

		offset += file->f_pos;

		break;

	case SEEK_DATA:

		/*

		 * In the generic case the entire file is data, so as long as

		 * offset isn't at the end of the file then the offset is data.

		 */

		if (offset >= inode->i_size) {

			mutex_unlock(&inode->i_mutex);

			return -ENXIO;

		}

		break;

	case SEEK_HOLE:

		/*

		 * There is a virtual hole at the end of the file, so as long as

		 * offset isn't i_size or larger, return i_size.

		 */

		if (offset >= inode->i_size) {

			mutex_unlock(&inode->i_mutex);

			return -ENXIO;

		}

		offset = inode->i_size;

		break;

	}



	if (offset < 0 || offset > maxbytes) {