kernel/git/stable/linux.git/fs/btrfs/reada.c, branch linux-5.2.y

btrfs: start readahead also in seed devices

2019-06-14T15:33:46+00:00

Currently, btrfs does not consult seed devices to start readahead. As a result, if readahead zone is added to the seed devices, btrfs_reada_wait() indefinitely wait for the reada_ctl to finish. You can reproduce the hung by modifying btrfs/163 to have larger initial file size (e.g. xfs_io pwrite 4M instead of current 256K). Fixes: 7414a03fbf9e ("btrfs: initial readahead code and prototypes") Cc: stable@vger.kernel.org # 3.2+: ce7791ffee1e: Btrfs: fix race between readahead and device replace/removal Cc: stable@vger.kernel.org # 3.2+ Reviewed-by: Filipe Manana Signed-off-by: Naohiro Aota Signed-off-by: David Sterba

btrfs: dev-replace: open code trivial locking helpers

2018-12-17T13:51:45+00:00

The dev-replace locking functions are now trivial wrappers around rw semaphore that can be used directly everywhere. No functional change. Signed-off-by: David Sterba

btrfs: reada: reorder dev-replace locks before radix tree preload

2018-12-17T13:51:44+00:00

The device-replace read lock is going to use rw semaphore in followup commits. The semaphore might sleep which is not possible in the radix tree preload section. The lock nesting is now: * device replace * radix tree preload * readahead spinlock Signed-off-by: David Sterba

btrfs: prune unused includes

2018-08-06T11:12:43+00:00

Remove includes if none of the interfaces and exports is used in the given source file. Signed-off-by: David Sterba

btrfs: Fix misleading indentation reported by smatch

2018-08-06T11:12:31+00:00

This patch avoids that building the BTRFS source code with smatch triggers complaints about inconsistent indenting. Signed-off-by: Bart Van Assche Signed-off-by: David Sterba

btrfs: replace GPL boilerplate by SPDX -- sources

2018-04-12T14:29:51+00:00

Remove GPL boilerplate text (long, short, one-line) and keep the rest, ie. personal, company or original source copyright statements. Add the SPDX header. Signed-off-by: David Sterba

btrfs: split dev-replace locking helpers for read and write

2018-03-31T00:01:07+00:00

The current calls are unclear in what way btrfs_dev_replace_lock takes the locks, so drop the argument, split the helpers and use similar naming as for read and write locks. Signed-off-by: David Sterba

btrfs: remove unused member err from reada_extent

2017-06-19T16:25:59+00:00

Seems to be unused since the initial commit, we ignore readahead errors anyway, the full read will handle that if necessary. Signed-off-by: David Sterba

btrfs: remove local blocksize variable in reada_find_extent

2017-04-18T12:07:25+00:00

The name is misleading and the local variable serves no purpose. Reviewed-by: Liu Bo Signed-off-by: David Sterba

btrfs: remove redundant parameter from reada_start_machine_dev

2017-04-18T12:07:25+00:00

We can read fs_info from dev. Reviewed-by: Liu Bo Signed-off-by: David Sterba