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Groups > linux.kernel > #1378396
| From | Eric Shang <EricShang@zhaoxin.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | 答复: ext4 error |
| Date | 2016-04-14 04:10 +0200 |
| Message-ID | <rnETf-2DA-11@gated-at.bofh.it> (permalink) |
| References | <rntuO-23t-9@gated-at.bofh.it> <rntO9-2uP-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Toshi: Thanks! I think this not relate to DAX and dax_get_unmapped_area, I am a junior kernel maintainer for our company. This issue bother me long time, looks like kernel ext4 issue or our emmc driver issue, I will dig it out, Thanks! Best Regards EricShang -----邮件原件----- 发件人: Toshi Kani [mailto:toshi.kani@hpe.com] 发送时间: 2016年4月13日 22:10 收件人: Eric Shang; Matthew Wilcox 抄送: akpm@linux-foundation.org; dan.j.williams@intel.com; viro@zeniv.linux.org.uk; ross.zwisler@linux.intel.com; kirill.shutemov@linux.intel.com; david@fromorbit.com; jack@suse.cz; tytso@mit.edu; adilger.kernel@dilger.ca; linux-nvdimm@lists.01.org; linux-fsdevel@vger.kernel.org; linux-ext4@vger.kernel.org; xfs@oss.sgi.com; linux-kernel@vger.kernel.org 主题: Re: ext4 error On Wed, 2016-04-13 at 13:44 +0000, Eric Shang wrote: > HI All: > I meet an ext4 error, following is the error log. After panic, I > check the emmc by the tool debufs, the inode 69878 i_nlink is not > zero. And this inode don't belong to parent dir 6987, it belong to > other file(this inode belong to two files when check by debugfs > ncheck), I guess than this inode has beed deleted in memory and > already used by other file. But the parent dentry buff_head not flush > to emmc. But when lookup this dentry can't find it' in dentry cache, > and then lookup_real, read the dentry from emmc, get the file inode which already be deleted. > Can any give me some help how to check this issue. My kernel version > is 3.18 form Android . I thinks something wrong with dentry cache > flush and dirty buff_head flush to emmc. Thanks all! Are you somehow using DAX and my dax_get_unmapped_area patches in your Android 3.18 kernel? I doubt this is the case, but I thought I should check since you reported it to me and Matthew with the same cc list. If you are simply using a distributed Android kernel, you should report it to Android email list or bug tracker. -Toshi
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ext4 error Eric Shang <EricShang@zhaoxin.com> - 2016-04-13 16:00 +0200
Re: ext4 error Toshi Kani <toshi.kani@hpe.com> - 2016-04-13 16:20 +0200
答复: ext4 error Eric Shang <EricShang@zhaoxin.com> - 2016-04-14 04:10 +0200
Re: ext4 error Theodore Ts'o <tytso@mit.edu> - 2016-04-14 05:30 +0200
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