[LU-18128] fiemap returns EINVAL when applied past EOF

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Labels: patch
• Severity: 3
• Assignee: Andrew Perepechko
• Reporter: Andrew Perepechko

Description

fiemap returns EINVAL when applied past EOF for a non-zero length file, which is not consistent with the EXT4 behaviour. It's also inconsistent with the Lustre behaviour for a zero length file. It's also inconsistent with the fiemap specification in linux/Documentation/filesystems/fiemap.txt.