http://bugzilla.suse.com/show_bug.cgi?id=1025065
Bug ID: 1025065
Summary: Btrfs: fix warning of bytes_may_use
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: Wed, 17 Jun 2015 16:59:58 +0800
Subject: Btrfs: fix warning of bytes_may_use
Git-commit: ddba1bfc2369cd0566bcfdab47599834a32d1c19
Patch-mainline: v4.2-rc2
References: revisit
While running generic/019, dmesg got several warnings from
btrfs_free_reserved_data_space().
Test generic/019 produces some disk failures so sumbit dio will get errors,
in which case, btrfs_direct_IO() goes to the error handling and free
bytes_may_use, but the problem is that bytes_may_use has been free'd
during get_block().
This adds a runtime flag to show if we've gone through get_block(), if so,
don't do the cleanup work.
Signed-off-by: Liu Bo
Reviewed-by: Filipe Manana
Tested-by: Filipe Manana
Signed-off-by: Chris Mason
Acked-by: Jeff Mahoney
---
fs/btrfs/btrfs_inode.h | 2 ++
fs/btrfs/inode.c | 16 +++++++++++++---
2 files changed, 15 insertions(+), 3 deletions(-)
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