(2014/07/02 1:04), David Sterba wrote:
On Mon, Jun 30, 2014 at 10:51:25AM +0800, Wang Shilong wrote:
Steps to reproduce:
# mkfs.btrfs -f /dev/sdb
# mount /dev/sdb /mnt -o compress-force=lzo
# mount /dev/sdb /mnt -o remount,compress=zlib
# cat /proc/mounts
Remounting from compress-force to compress could not clear compress-force
option. The problem is there is no way for users to clear compress-force
option separately.
Fix this problem by clearing @FORCE_COMPRESS flag when remounting to
compress=xxx.
Suggested-by: Tsutomu Itoh <t-itoh@xxxxxxxxxxxxxx>
Signed-off-by: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx>
I'm sorry for lack of answer in the V1 thread, V2 is the minimal bugfix
and I'm fine with it right away.
Reviewed-by: David Sterba <dsterba@xxxxxxx>
Test result (I used your reproducer):
3.16-rc3: FAIL
3.16-rc3 w/ your patch: PASS
Reviewed-by: Satoru Takeuchi <takeuchi_satoru@xxxxxxxxxxxxxx>
Tested-by: Satoru Takeuchi <takeuchi_satoru@xxxxxxxxxxxxxx>
Thanks,
Satoru
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