diff options
| author | Toshi Kani <[email protected]> | 2016-10-07 16:59:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2016-10-07 18:46:28 -0700 |
| commit | dbe6ec815641aa22b50775aaeb47fa3a8d04ccf1 (patch) | |
| tree | 1be0e5c97f961a4a801fc417fde178707b93010b | |
| parent | 74d2fad1334d12bac8fe017aba598dd66c86628b (diff) | |
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/[email protected]
Signed-off-by: Toshi Kani <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Ross Zwisler <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Theodore Ts'o <[email protected]>
Cc: Andreas Dilger <[email protected]>
Cc: Mike Kravetz <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | fs/ext2/file.c | 1 | ||||
| -rw-r--r-- | fs/ext4/file.c | 1 | ||||
| -rw-r--r-- | fs/xfs/xfs_file.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext2/file.c b/fs/ext2/file.c index 423cc01c9d41..0ca363d1341c 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -234,6 +234,7 @@ const struct file_operations ext2_file_operations = { .open = dquot_file_open, .release = ext2_release_file, .fsync = ext2_fsync, + .get_unmapped_area = thp_get_unmapped_area, .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, }; 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, diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index c68517b0f248..bac55c687085 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -1618,6 +1618,7 @@ const struct file_operations xfs_file_operations = { .open = xfs_file_open, .release = xfs_file_release, .fsync = xfs_file_fsync, + .get_unmapped_area = thp_get_unmapped_area, .fallocate = xfs_file_fallocate, }; |