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btrfs: write_dev_flush does not return ENOMEM anymore
Since commit "btrfs: btrfs_io_bio_alloc never fails, skip error handling" write_dev_flush will not return ENOMEM in the sending part. We do not need to check for it in the callers. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: David Sterba <dsterba@suse.com> [ updated changelog ] Signed-off-by: David Sterba <dsterba@suse.com>
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170607ebd9
commit
12b9bf0b94
1 changed files with 5 additions and 33 deletions
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@ -3505,13 +3505,6 @@ static int write_dev_flush(struct btrfs_device *device, int wait)
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if (wait) {
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bio = device->flush_bio;
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if (!bio)
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/*
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* This means the alloc has failed with ENOMEM, however
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* here we return 0, as its not a device error.
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*/
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return 0;
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wait_for_completion(&device->flush_wait);
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if (bio->bi_error) {
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@ -3548,25 +3541,16 @@ static int write_dev_flush(struct btrfs_device *device, int wait)
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static int check_barrier_error(struct btrfs_fs_devices *fsdevs)
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{
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int submit_flush_error = 0;
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int dev_flush_error = 0;
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struct btrfs_device *dev;
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int tolerance;
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list_for_each_entry_rcu(dev, &fsdevs->devices, dev_list) {
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if (!dev->bdev) {
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submit_flush_error++;
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dev_flush_error++;
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continue;
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}
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if (dev->last_flush_error == -ENOMEM)
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submit_flush_error++;
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if (dev->last_flush_error && dev->last_flush_error != -ENOMEM)
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if (!dev->bdev || dev->last_flush_error)
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dev_flush_error++;
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}
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tolerance = fsdevs->fs_info->num_tolerated_disk_barrier_failures;
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if (submit_flush_error > tolerance || dev_flush_error > tolerance)
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if (dev_flush_error >
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fsdevs->fs_info->num_tolerated_disk_barrier_failures)
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return -EIO;
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return 0;
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@ -3596,10 +3580,8 @@ static int barrier_all_devices(struct btrfs_fs_info *info)
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if (!dev->in_fs_metadata || !dev->writeable)
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continue;
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ret = write_dev_flush(dev, 0);
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if (ret)
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errors_send++;
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dev->last_flush_error = ret;
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write_dev_flush(dev, 0);
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dev->last_flush_error = 0;
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}
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/* wait for all the barriers */
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@ -3620,16 +3602,6 @@ static int barrier_all_devices(struct btrfs_fs_info *info)
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}
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}
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/*
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* Try hard in case of flush. Lets say, in RAID1 we have
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* the following situation
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* dev1: EIO dev2: ENOMEM
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* this is not a fatal error as we hope to recover from
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* ENOMEM in the next attempt to flush.
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* But the following is considered as fatal
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* dev1: ENOMEM dev2: ENOMEM
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* dev1: bdev == NULL dev2: ENOMEM
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*/
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if (errors_send || errors_wait) {
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/*
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* At some point we need the status of all disks
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