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1122c0c1cc
Move the cache control settings into the queue_limits so that the flags can be set atomically with the device queue frozen. Add new features and flags field for the driver set flags, and internal (usually sysfs-controlled) flags in the block layer. Note that we'll eventually remove enough field from queue_limits to bring it back to the previous size. The disable flag is inverted compared to the previous meaning, which means it now survives a rescan, similar to the max_sectors and max_discard_sectors user limits. The FLUSH and FUA flags are now inherited by blk_stack_limits, which simplified the code in dm a lot, but also causes a slight behavior change in that dm-switch and dm-unstripe now advertise a write cache despite setting num_flush_bios to 0. The I/O path will handle this gracefully, but as far as I can tell the lack of num_flush_bios and thus flush support is a pre-existing data integrity bug in those targets that really needs fixing, after which a non-zero num_flush_bios should be required in dm for targets that map to underlying devices. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20240617060532.127975-14-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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| .. | ||
| alloc.c | ||
| bcache_ondisk.h | ||
| bcache.h | ||
| bset.c | ||
| bset.h | ||
| btree.c | ||
| btree.h | ||
| debug.c | ||
| debug.h | ||
| extents.c | ||
| extents.h | ||
| features.c | ||
| features.h | ||
| io.c | ||
| journal.c | ||
| journal.h | ||
| Kconfig | ||
| Makefile | ||
| movinggc.c | ||
| request.c | ||
| request.h | ||
| stats.c | ||
| stats.h | ||
| super.c | ||
| sysfs.c | ||
| sysfs.h | ||
| trace.c | ||
| util.c | ||
| util.h | ||
| writeback.c | ||
| writeback.h | ||