http://bugzilla.suse.com/show_bug.cgi?id=1025072 Bug ID: 1025072 Summary: Btrfs: bail out if block group has different mixed flag Classification: openSUSE Product: openSUSE Distribution Version: Leap 42.1 Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: jeffm@suse.com Reporter: jeffm@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- From: Liu Bo Date: Thu, 25 Aug 2016 18:08:27 -0700 Subject: Btrfs: bail out if block group has different mixed flag Git-commit: 49303381f19ab16a371a061b67e783d3f570d56e Patch-mainline: v4.9-rc1 References: pulled from 4.4-stable (4.1-stable had expired) Currently we allow inconsistence about mixed flag (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA). We'd get ENOSPC if block group has mixed flag and btrfs doesn't. If that happens, we have one space_info with mixed flag and another space_info only with BTRFS_BLOCK_GROUP_METADATA, and global_block_rsv.space_info points to the latter one, but all bytes from block_group contributes to the mixed space_info, thus all the allocation will fail with ENOSPC. This adds a check for the above case. Reported-by: Vegard Nossum Signed-off-by: Liu Bo [ updated message ] Reviewed-by: David Sterba Signed-off-by: David Sterba Acked-by: Jeff Mahoney --- fs/btrfs/extent-tree.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) -- You are receiving this mail because: You are on the CC list for the bug.