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    btrfs: Convert to new freezing mechanism · b2b5ef5c
    Jan Kara 提交于
    We convert btrfs_file_aio_write() to use new freeze check.  We also add proper
    freeze protection to btrfs_page_mkwrite(). We also add freeze protection to
    the transaction mechanism to avoid starting transactions on frozen filesystem.
    At minimum this is necessary to stop iput() of unlinked file to change frozen
    filesystem during truncation.
    
    Checks in cleaner_kthread() and transaction_kthread() can be safely removed
    since btrfs_freeze() will lock the mutexes and thus block the threads (and they
    shouldn't have anything to do anyway).
    
    CC: linux-btrfs@vger.kernel.org
    CC: Chris Mason <chris.mason@oracle.com>
    Signed-off-by: NJan Kara <jack@suse.cz>
    Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
    b2b5ef5c
transaction.c 40.6 KB