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Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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pr_tab_rjust() was broken and leaving a null somewhere in the output
string - this patch fixes it and simplifies it a bit.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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This patch changes printbufs dynamically allocate and reallocate a
buffer as needed. Stack usage has become a bit of a problem, and a major
cause of that has been static size string buffers on the stack.
The most involved part of this refactoring is that printbufs must now be
exited with printbuf_exit().
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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Fewer random on-stack char arrays.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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Now, when outputting to printbufs, we can set tabstops and left or right
justify text to them - this is to be used by the userspace 'bcachefs fs
usage' command.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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This patch improves the superblock .to_text() methods and adds methods
for all types that were missing them. It also improves printbufs by
allowing them to specfiy what units we want to be printing in, and adds
new wrapper methods for unifying our kernel and userspace environments.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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bch_scnmemcpy was for printing length-limited strings that might not
have a terminating null - turns out sprintf & pr_buf can do this with
%.*s.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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There's places where we parse these numbers, and our parsing doesn't
cope with decimals currently - this is a hack to get the device_add path
working again where for the device blocksize there doesn't ever need to
be a decimal.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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This fixes a null ptr deref in bio_alloc_bioset() -> biovec_slab()
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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this_cpu_ptr() emits a warning when used without preemption disabled -
harmless in this case, as we have other locking where
bch2_acc_percpu_u64s() is used.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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Small improvements to some percpu utility code.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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In userspace, we don't really have a well defined PAGE_SIZE and shouln't
be relying on it. This is some more incremental work to remove
references to it.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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PAGE_SIZE and size_t are not unsigned longs on 32 bit, annoying...
also switch to atomic64_cmpxchg instead of cmpxchg() for
journal_seq_copy, as atomic64_cmpxchg has a fallback that uses spinlocks
for when it's not supported.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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printbufs know how big the buffer is that was allocated, so we can get
rid of the random PAGE_SIZEs all over the place.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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Forked from drivers/md/bcache, now a full blown COW multi device
filesystem with a long list of features - https://bcachefs.org
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
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