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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-10 18:38:15 +0300 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-05-16 03:57:05 +0300 |
| commit | 67482129cdabf7cede1301d2415ef4f0156d35cd (patch) | |
| tree | 074b330967f8c3f8964cd6152ca0d948b6e727a4 /fs/xfs/xfs_aops.c | |
| parent | d6b636ebb1c9f412687a7b6ed97c996247cc2380 (diff) | |
| download | linux-67482129cdabf7cede1301d2415ef4f0156d35cd.tar.xz | |
iomap: add a swapfile activation function
Add a new iomap_swapfile_activate function so that filesystems can
activate swap files without having to use the obsolete and slow bmap
function. This enables XFS to support fallocate'd swap files and
swap files on realtime devices.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/xfs/xfs_aops.c')
| -rw-r--r-- | fs/xfs/xfs_aops.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 0ab824f574ed..80de476cecf8 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1475,6 +1475,16 @@ xfs_vm_set_page_dirty( return newly_dirty; } +static int +xfs_iomap_swapfile_activate( + struct swap_info_struct *sis, + struct file *swap_file, + sector_t *span) +{ + sis->bdev = xfs_find_bdev_for_inode(file_inode(swap_file)); + return iomap_swapfile_activate(sis, swap_file, span, &xfs_iomap_ops); +} + const struct address_space_operations xfs_address_space_operations = { .readpage = xfs_vm_readpage, .readpages = xfs_vm_readpages, @@ -1488,6 +1498,7 @@ const struct address_space_operations xfs_address_space_operations = { .migratepage = buffer_migrate_page, .is_partially_uptodate = block_is_partially_uptodate, .error_remove_page = generic_error_remove_page, + .swap_activate = xfs_iomap_swapfile_activate, }; const struct address_space_operations xfs_dax_aops = { @@ -1495,4 +1506,5 @@ const struct address_space_operations xfs_dax_aops = { .direct_IO = noop_direct_IO, .set_page_dirty = noop_set_page_dirty, .invalidatepage = noop_invalidatepage, + .swap_activate = xfs_iomap_swapfile_activate, }; |