diff options
| author | Ritesh Harjani | 2020-09-04 14:46:53 +0530 |
|---|---|---|
| committer | Theodore Ts'o | 2020-10-18 10:35:54 -0400 |
| commit | 0e6895ba00b7be45f3ab0d2107dda3ef1245f5b4 (patch) | |
| tree | 94d1bb08ffeb0dd92c6d82f7fe319d9d14487bd9 | |
| parent | a1b8638ba1320e6684aa98233c15255eb803fac7 (diff) | |
ext4: implement swap_activate aops using iomap
After moving ext4's bmap to iomap interface, swapon functionality
on files created using fallocate (which creates unwritten extents) are
failing. This is since iomap_bmap interface returns 0 for unwritten
extents and thus generic_swapfile_activate considers this as holes
and hence bail out with below kernel msg :-
[340.915835] swapon: swapfile has holes
To fix this we need to implement ->swap_activate aops in ext4
which will use ext4_iomap_report_ops. Since we only need to return
the list of extents so ext4_iomap_report_ops should be enough.
Cc: stable@kernel.org
Reported-by: Yuxuan Shui <yshuiv7@gmail.com>
Fixes: ac58e4fb03f ("ext4: move ext4 bmap to use iomap infrastructure")
Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/20200904091653.1014334-1-riteshh@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/inode.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index bf596467c234..771ed8b1fadb 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3601,6 +3601,13 @@ static int ext4_set_page_dirty(struct page *page) return __set_page_dirty_buffers(page); } +static int ext4_iomap_swap_activate(struct swap_info_struct *sis, + struct file *file, sector_t *span) +{ + return iomap_swapfile_activate(sis, file, span, + &ext4_iomap_report_ops); +} + static const struct address_space_operations ext4_aops = { .readpage = ext4_readpage, .readahead = ext4_readahead, @@ -3616,6 +3623,7 @@ static const struct address_space_operations ext4_aops = { .migratepage = buffer_migrate_page, .is_partially_uptodate = block_is_partially_uptodate, .error_remove_page = generic_error_remove_page, + .swap_activate = ext4_iomap_swap_activate, }; static const struct address_space_operations ext4_journalled_aops = { @@ -3632,6 +3640,7 @@ static const struct address_space_operations ext4_journalled_aops = { .direct_IO = noop_direct_IO, .is_partially_uptodate = block_is_partially_uptodate, .error_remove_page = generic_error_remove_page, + .swap_activate = ext4_iomap_swap_activate, }; static const struct address_space_operations ext4_da_aops = { @@ -3649,6 +3658,7 @@ static const struct address_space_operations ext4_da_aops = { .migratepage = buffer_migrate_page, .is_partially_uptodate = block_is_partially_uptodate, .error_remove_page = generic_error_remove_page, + .swap_activate = ext4_iomap_swap_activate, }; static const struct address_space_operations ext4_dax_aops = { @@ -3657,6 +3667,7 @@ static const struct address_space_operations ext4_dax_aops = { .set_page_dirty = noop_set_page_dirty, .bmap = ext4_bmap, .invalidatepage = noop_invalidatepage, + .swap_activate = ext4_iomap_swap_activate, }; void ext4_set_aops(struct inode *inode) |