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btrfs_root_item maintains the ctime for root updates. This is not part of vfs_inode. Since current_time() uses struct inode* as an argument as Linus suggested, this cannot be used to update root times unless, we modify the signature to use inode. Since btrfs uses nanosecond time granularity, it can also use ktime_get_real_ts directly to obtain timestamp for the root. It is necessary to use the timespec time api here because the same btrfs_set_stack_timespec_*() apis are used for vfs inode times as well. These can be transitioned to using timespec64 when btrfs internally changes to use timespec64 as well. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Acked-by: David Sterba <dsterba@suse.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David Sterba <dsterba@suse.com> |
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| README | ||
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.