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| author | Toshi Kani <toshi.kani@hpe.com> | 2016-10-08 02:59:59 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-08 04:46:28 +0300 |
| commit | dbe6ec815641aa22b50775aaeb47fa3a8d04ccf1 (patch) | |
| tree | 1be0e5c97f961a4a801fc417fde178707b93010b /fs/ext4 | |
| parent | 74d2fad1334d12bac8fe017aba598dd66c86628b (diff) | |
| download | linux-dbe6ec815641aa22b50775aaeb47fa3a8d04ccf1.tar.xz | |
ext2/4, xfs: call thp_get_unmapped_area() for pmd mappings
To support DAX pmd mappings with unmodified applications, filesystems
need to align an mmap address by the pmd size.
Call thp_get_unmapped_area() from f_op->get_unmapped_area.
Note, there is no change in behavior for a non-DAX file.
Link: http://lkml.kernel.org/r/1472497881-9323-3-git-send-email-toshi.kani@hpe.com
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/file.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 261ac3734c58..28f542bb0bda 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -703,6 +703,7 @@ const struct file_operations ext4_file_operations = { .open = ext4_file_open, .release = ext4_release_file, .fsync = ext4_sync_file, + .get_unmapped_area = thp_get_unmapped_area, .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .fallocate = ext4_fallocate, |