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(parent: 3eb14d7) | patch
btrfs: dev-replace: remove custom read/write blocking scheme
authorDavid Sterba <dsterba@suse.com>
Wed, 4 Apr 2018 23:41:06 +0000 (01:41 +0200)
committerDavid Sterba <dsterba@suse.com>
Mon, 17 Dec 2018 13:51:45 +0000 (14:51 +0100)
commite55bec58e349b3f9c6001cd343c6fa3ea624c31e
treefe42e45af2f699762556d58619b8365091ea445etree | snapshot
parent3eb14d720da516cde5407b87331b22260b3db8f9commit | diff
btrfs: dev-replace: remove custom read/write blocking scheme

After the rw semaphore has been added, the custom blocking using
::blocking_readers and ::read_lock_wq is redundant.

The blocking logic in __btrfs_map_block is replaced by extending the
time the semaphore is held, that has the same blocking effect on writes
as the previous custom scheme that waited until ::blocking_readers was
zero.

Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/ctree.h diff | blob | history
fs/btrfs/dev-replace.c diff | blob | history
fs/btrfs/dev-replace.h diff | blob | history
fs/btrfs/disk-io.c diff | blob | history
fs/btrfs/volumes.c diff | blob | history
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