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btrfs: zoned: locate superblock position using zone capacity
authorNaohiro Aota <naohiro.aota@wdc.com>
Thu, 19 Aug 2021 12:19:13 +0000 (21:19 +0900)
committerDavid Sterba <dsterba@suse.com>
Tue, 26 Oct 2021 17:07:59 +0000 (19:07 +0200)
commit9658b72ef300b5002358162218146230f5b72b99
tree225f100181fcc5030c273a787cc660ed129903f5tree | snapshot
parent5daaf552d18263adbdf385ce5c32da8277f8de02commit | diff
btrfs: zoned: locate superblock position using zone capacity

sb_write_pointer() returns the write position of next superblock. For READ,
we need a previous location. When the pointer is at the head, the previous
one is the last one of the other zone. Calculate the last one's position
from zone capacity.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/zoned.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git