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af72273381
Currently if some fatal errors occur, like all IO get -EIO, resources would be cleaned up when a) transaction is being committed or b) BTRFS_FS_STATE_ERROR is set However, in some rare cases, resources may be left alone after transaction gets aborted and umount may run into some ASSERT(), e.g. ASSERT(list_empty(&block_group->dirty_list)); For case a), in btrfs_commit_transaciton(), there're several places at the beginning where we just call btrfs_end_transaction() without cleaning up resources. For case b), it is possible that the trans handle doesn't have any dirty stuff, then only trans hanlde is marked as aborted while BTRFS_FS_STATE_ERROR is not set, so resources remain in memory. This makes btrfs also check BTRFS_FS_STATE_TRANS_ABORTED to make sure that all resources won't stay in memory after umount. Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.