This patch makes f2fs_map_blocks supporting returning next potential
page offset which skips hole region in indirect tree of inode, and
use it to speed up fiemap in handling big hole case.
Test method:
xfs_io -f /mnt/f2fs/file -c "pwrite 1099511627776 4096"
time xfs_io -f /mnt/f2fs/file -c
This patch makes f2fs_map_blocks supporting returning next potential
page offset which skips hole region in indirect tree of inode, and
use it to speed up fiemap in handling big hole case.
Test method:
xfs_io -f /mnt/f2fs/file -c "pwrite 1099511627776 4096"
time xfs_io -f /mnt/f2fs/file -c
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