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| author | Naohiro Aota <naohiro.aota@wdc.com> | 2019-06-06 16:54:44 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-25 11:35:59 +0800 |
| commit | c592b1c3a994bb1fd3e8981a3f4d26a173a47511 (patch) | |
| tree | 125a377f81b0b1b627f4a1b7c3383dd40982446c /drivers/net | |
| parent | 17f1dca21d16ef37b3c1d3e6b018ccfcecf7d834 (diff) | |
btrfs: start readahead also in seed devices
commit c4e0540d0ad49c8ceab06cceed1de27c4fe29f6e upstream.
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 <fdmanana@suse.com>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net')
0 files changed, 0 insertions, 0 deletions