kernel.git/fs/bcachefs/two_state_shared_lock.c, branch linux-6.15.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-6.15.y2023-10-22T21:09:51Zbcachefs: Inline bch2_two_state_(trylock|unlock)2023-10-22T21:09:51ZKent Overstreet2022-11-23T17:22:39Zurn:sha1:19fe87e00b6a601b2ec8251d0231f4c9b3bb5002
Standard inlining of fast paths - these locks are now used by our new
nocow mode.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs: Factor out two_state_shared_lock2023-10-22T21:09:45ZKent Overstreet2022-11-04T17:25:57Zurn:sha1:a7ecd30c8300624448c4e66cd7a7e7209b96ea61
We have a unique lock used for controlling adding to the pagecache: the
lock has two states, where both states are shared - the lock may be held
multiple times for either state - but not both states at the same time.
This is exactly what we need for nocow mode locking, so this patch pulls
it out of fs.c into its own file.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>