kernel/linux.git/fs/bcachefs/darray.c, branch v6.12.80

bcachefs: Workaround for kvmalloc() not supporting > INT_MAX allocations

2024-10-20T20:50:14+00:00

kvmalloc() doesn't support allocations > INT_MAX, but vmalloc() does - the limit should be lifted, but we can work around this for now. A user with a 75 TB filesystem reported the following journal replay error: https://github.com/koverstreet/bcachefs/issues/769 In journal replay we have to sort and dedup all the keys from the journal, which means we need a large contiguous allocation. Given that the user has 128GB of ram, the 2GB limit on allocation size has become far too small. Signed-off-by: Kent Overstreet

bcachefs: darray: convert to alloc_hooks()

2024-09-09T13:41:49+00:00

better memory allocation profiling support Signed-off-by: Kent Overstreet

bcachefs: darray: Don't pass NULL to memcpy()

2024-07-15T01:52:37+00:00

memcpy's second parameter must not be NULL, even if size is zero. Signed-off-by: Tavian Barnes Signed-off-by: Kent Overstreet

bcachefs: DARRAY_PREALLOCATED()

2024-01-01T16:46:52+00:00

Add support to darray for preallocating some number of elements. Signed-off-by: Kent Overstreet

bcachefs: Switch darray to kvmalloc()

2024-01-01T16:46:52+00:00

We sometimes use darrays for quite large buffers - the btree write buffer in particular needs large buffers, since it must be sized to hold all the write buffer keys outstanding in the journal. Signed-off-by: Kent Overstreet

bcachefs: Factor out darray resize slowpath

2024-01-01T16:46:52+00:00

Move the slowpath (actually growing the darray) to an out-of-line function; also, add some helpers for the upcoming btree write buffer rewrite. Signed-off-by: Kent Overstreet