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f8410857b7
NVM Express Zoned Namespace (ZNS) devices can have zone-capacity(zc) less than the zone-size. ZNS defines a per zone capacity which can be equal or less than the zone-size. Zone-capacity is the number of usable blocks in the zone. If zone-capacity is less than zone-size, then the segments which start at/after zone-capacity are considered unusable. Only those segments which start before the zone-capacity are considered as usable and added to the free_segment_count and free_segment_bitmap of the kernel. In such cases, the filesystem should not write/read beyond the zone-capacity. Update the super block with the usable number of blocks and free segment count in the ZNS device zones, if zone-capacity is less than zone-size. Set reserved segment count and overprovision ratio based on the usable segments in the zone. Allow fsck to find the free_segment_count based on the zone-capacity and compare with checkpoint values. Signed-off-by: Aravind Ramesh <aravind.ramesh@wdc.com> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> [Jaegeuk Kim: add UNUSED to is_usable_seg()] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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| .. | ||
| libf2fs_io.c | ||
| libf2fs_zoned.c | ||
| libf2fs.c | ||
| Makefile.am | ||
| nls_utf8.c | ||
| utf8data.h | ||