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Date: Wed, 06 Jun 2012 10:17:28 +0800 From: Asias He <asias@...hat.com> To: linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org, Chris Mason <chris.mason@...cle.com>, Jens Axboe <axboe@...nel.dk>, jeffm@...e.com Subject: Re: [PATCH 1/2] btrfs: Drop unused function btrfs_abort_devices() Hello, Jeff On 05/28/2012 09:41 PM, David Sterba wrote: > On Fri, May 25, 2012 at 11:10:21AM +0800, Asias He wrote: >> 1) This function is not used anywhere. > > This was added in 49b25e0540904be0bf558b84475c69d72e4de66e adding a > transaction abort infrastructure. I'm not sure if Jeff had some > intentions with it or whether it got obsolete during the patchset long > evolution, CCed. Any comments? > > > david > > >> 2) Using the blk_abort_queue() to abort the queue seems not correct. >> blk_abort_queue() is used for timeout handling (block/blk-timeout.c). >> >> Cc: Chris Mason<chris.mason@...cle.com> >> Cc: linux-btrfs@...r.kernel.org >> Cc: Jens Axboe<axboe@...nel.dk> >> Cc: linux-kernel@...r.kernel.org >> Signed-off-by: Asias He<asias@...hat.com> >> --- >> fs/btrfs/disk-io.c | 13 ------------- >> fs/btrfs/disk-io.h | 1 - >> 2 files changed, 14 deletions(-) >> >> diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c >> index e1fe74a..3521866 100644 >> --- a/fs/btrfs/disk-io.c >> +++ b/fs/btrfs/disk-io.c >> @@ -2902,19 +2902,6 @@ int write_ctree_super(struct btrfs_trans_handle *trans, >> return ret; >> } >> >> -/* Kill all outstanding I/O */ >> -void btrfs_abort_devices(struct btrfs_root *root) >> -{ >> - struct list_head *head; >> - struct btrfs_device *dev; >> - mutex_lock(&root->fs_info->fs_devices->device_list_mutex); >> - head =&root->fs_info->fs_devices->devices; >> - list_for_each_entry_rcu(dev, head, dev_list) { >> - blk_abort_queue(dev->bdev->bd_disk->queue); >> - } >> - mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); >> -} >> - >> void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root) >> { >> spin_lock(&fs_info->fs_roots_radix_lock); >> diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h >> index ab1830a..05b3fab 100644 >> --- a/fs/btrfs/disk-io.h >> +++ b/fs/btrfs/disk-io.h >> @@ -89,7 +89,6 @@ int btrfs_add_log_tree(struct btrfs_trans_handle *trans, >> int btrfs_cleanup_transaction(struct btrfs_root *root); >> void btrfs_cleanup_one_transaction(struct btrfs_transaction *trans, >> struct btrfs_root *root); >> -void btrfs_abort_devices(struct btrfs_root *root); >> >> #ifdef CONFIG_DEBUG_LOCK_ALLOC >> void btrfs_init_lockdep(void); > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Asias -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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