exfat: map allocated extents for swap activation

exFAT reports allocated ranges beyond valid_size as IOMAP_HOLE when
IOMAP_REPORT is set. iomap_swapfile_activate() also uses IOMAP_REPORT
while collecting physical extents for a swap file, so it treats the
preallocated tail as unallocated and rejects the file with -EINVAL.

Use swap-specific iomap operations that suppress IOMAP_REPORT before
mapping the file. This reports physically allocated ranges as
IOMAP_UNWRITTEN during swap activation without changing the
byte-accurate SEEK_HOLE and SEEK_DATA behavior of the regular iomap
operations.

Fixes: 03a43677ca91 ("exfat: add swap_activate support")
Tested-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

0 files changed, 0 insertions, 0 deletions