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btrfs: dev-replace: replace's scrub must not be running in suspended state

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When the replace state is in the suspended state, btrfs_scrub_cancel()
should fail with -ENOTCONN as there is no scrub running. As a safety
catch check if btrfs_scrub_cancel() returns -ENOTCONN and assert if it
doesn't.

Signed-off-by: Anand Jain <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
This commit is contained in:
Anand Jain
2018-12-17 14:51:35 +01:00
committed by David Sterba
parent b47dda2ef6
commit fe97e2e173
1 changed files with 3 additions and 1 deletions
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fs/btrfs/dev-replace.c
+3 -1
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@@ -840,7 +840,9 @@ int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info)
btrfs_dev_replace_write_unlock(dev_replace);
btrfs_scrub_cancel(fs_info);
/* Scrub for replace must not be running in suspended state */
ret = btrfs_scrub_cancel(fs_info);
ASSERT(ret != -ENOTCONN);
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {