From: Amir Goldstein <amir73il@gmail.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
Dave Chinner <david@fromorbit.com>,
linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH v2 0/6] Overlayfs stacked f_op fixes
Date: Sun, 26 Aug 2018 19:25:11 +0300 [thread overview]
Message-ID: <1535300717-26686-1-git-send-email-amir73il@gmail.com> (raw)
Miklos,
Following are fixes to some stacked f_op regressions, also
availabel on my ovl-fixes branch [1].
Patches 2-3 fix fiemap() and swapon() regressions detected
by xfstests.
Per your suggestion, f_mapping now points to the overlay
inode mapping and as a result, swapfile support is disabled on
an overlayfs file.
Also disabled is FIBMAP on an overlayfs file - not a big loss.
Patch 1 adds the vfs helper file_real() to access overlayfs
real file and patches 4-6 use this helper to untangle from
the f_mapping change.
Please note that patch 4 fixes a problem that was verified
with an LTP test [2], but patches 5-6 fix theoretical problems
that I have not yet demonstrated with a test.
Thanks,
Amir.
[1] https://github.com/amir73il/linux/commits/ovl-fixes
[2] https://github.com/amir73il/ltp/commits/overlayfs-devel
Amir Goldstein (6):
vfs: add helper to get "real" overlayfs file
ovl: respect FIEMAP_FLAG_SYNC flag
ovl: fix GPF in swapfile_activate of file from overlayfs over xfs
vfs: fix readahead syscall on an overlayfs file
vfs: fix fadvise64 syscall on an overlayfs file
vfs: fix sync_file_range syscall on an overlayfs file
fs/overlayfs/file.c | 4 +---
fs/overlayfs/inode.c | 10 ++++++++++
fs/sync.c | 14 ++++++++++----
include/linux/fs.h | 27 +++++++++++++++++++++++++++
mm/fadvise.c | 34 ++++++++++++++++++++--------------
mm/readahead.c | 9 +++++++--
6 files changed, 75 insertions(+), 23 deletions(-)
--
2.7.4
next reply other threads:[~2018-08-26 20:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-26 16:25 Amir Goldstein [this message]
2018-08-26 16:25 ` [PATCH v2 1/6] vfs: add helper to get "real" overlayfs file Amir Goldstein
2018-08-26 16:25 ` [PATCH v2 2/6] ovl: respect FIEMAP_FLAG_SYNC flag Amir Goldstein
2018-08-26 19:26 ` Miklos Szeredi
2018-08-27 3:38 ` Dave Chinner
2018-08-27 6:20 ` Amir Goldstein
2018-08-27 23:05 ` Dave Chinner
2018-08-26 16:25 ` [PATCH v2 3/6] ovl: fix GPF in swapfile_activate of file from overlayfs over xfs Amir Goldstein
2018-08-27 3:43 ` Dave Chinner
2018-08-27 6:34 ` Amir Goldstein
2018-08-27 9:49 ` Miklos Szeredi
2018-08-26 16:25 ` [PATCH v2 4/6] vfs: fix readahead syscall on an overlayfs file Amir Goldstein
2018-08-26 16:25 ` [PATCH v2 5/6] vfs: fix fadvise64 " Amir Goldstein
2018-08-26 19:30 ` Miklos Szeredi
2018-08-26 21:23 ` Amir Goldstein
2018-08-26 16:25 ` [PATCH v2 6/6] vfs: fix sync_file_range " Amir Goldstein
2018-08-26 19:34 ` Miklos Szeredi
2018-08-26 21:55 ` Amir Goldstein
2018-08-27 4:23 ` Dave Chinner
2018-08-27 6:37 ` Amir Goldstein
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