* [merged] xfs-call-dax_pfn_mkwrite-for-dax-fsync-msync.patch removed from -mm tree
@ 2016-01-25 18:58 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2016-01-25 18:58 UTC (permalink / raw)
To: ross.zwisler, adilger.kernel, bfields, dan.j.williams,
dave.hansen, david, hpa, jack, jlayton, matthew.r.wilcox, mingo,
tglx, tytso, viro, willy, mm-commits
The patch titled
Subject: xfs: call dax_pfn_mkwrite() for DAX fsync/msync
has been removed from the -mm tree. Its filename was
xfs-call-dax_pfn_mkwrite-for-dax-fsync-msync.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Ross Zwisler <ross.zwisler@linux.intel.com>
Subject: xfs: call dax_pfn_mkwrite() for DAX fsync/msync
To properly support the new DAX fsync/msync infrastructure filesystems
need to call dax_pfn_mkwrite() so that DAX can track when user pages are
dirtied.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jan Kara <jack@suse.com>
Cc: Jeff Layton <jlayton@poochiereds.net>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/xfs/xfs_file.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff -puN fs/xfs/xfs_file.c~xfs-call-dax_pfn_mkwrite-for-dax-fsync-msync fs/xfs/xfs_file.c
--- a/fs/xfs/xfs_file.c~xfs-call-dax_pfn_mkwrite-for-dax-fsync-msync
+++ a/fs/xfs/xfs_file.c
@@ -1610,9 +1610,8 @@ xfs_filemap_pmd_fault(
/*
* pfn_mkwrite was originally inteneded to ensure we capture time stamp
* updates on write faults. In reality, it's need to serialise against
- * truncate similar to page_mkwrite. Hence we open-code dax_pfn_mkwrite()
- * here and cycle the XFS_MMAPLOCK_SHARED to ensure we serialise the fault
- * barrier in place.
+ * truncate similar to page_mkwrite. Hence we cycle the XFS_MMAPLOCK_SHARED
+ * to ensure we serialise the fault barrier in place.
*/
static int
xfs_filemap_pfn_mkwrite(
@@ -1635,6 +1634,8 @@ xfs_filemap_pfn_mkwrite(
size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT;
if (vmf->pgoff >= size)
ret = VM_FAULT_SIGBUS;
+ else if (IS_DAX(inode))
+ ret = dax_pfn_mkwrite(vma, vmf);
xfs_iunlock(ip, XFS_MMAPLOCK_SHARED);
sb_end_pagefault(inode->i_sb);
return ret;
_
Patches currently in -mm which might be from ross.zwisler@linux.intel.com are
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2016-01-25 18:58 [merged] xfs-call-dax_pfn_mkwrite-for-dax-fsync-msync.patch removed from -mm tree akpm
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