https://bugzilla.kernel.org/show_bug.cgi?id=105121 Bug ID: 105121 Summary: lseek() hangs for a long time on allocated files Product: File System Version: 2.5 Kernel Version: 4.2.1 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: ext4 Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx Reporter: iam@xxxxxxxxxxxxxxx Regression: No Created attachment 188751 --> https://bugzilla.kernel.org/attachment.cgi?id=188751&action=edit lseek test program lseek() call hangs for a long time on fallocate allocated files on ext4. Steps to reproduce: 1. gcc -o prog lseek-fallocate.c 2. fallocate -l 1G test 3. cat test > /dev/null 4. ./prog Actual result: prog hangs for 2 minutes on my system while doing lseek(). Expected result: lseek() instantly return ENXIO. Usually lseek works much faster if file wasn't cat'ed before lseek. Works properly on btrfs. -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
