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b20fe56cd2
Currently "btrfs subvolume snapshot -i <qgroupid>" would always mark the qgroup inconsistent. This can be annoying if the fs has a lot of snapshots, and needs qgroup to get the accounting for the amount of bytes it can free for each snapshot. Although we have the new simple quote as a solution, there is also a case where we can skip the full scan, if all the following conditions are met: - The source subvolume belongs to a higher level parent qgroup - The parent qgroup already owns all its bytes exclusively - The new snapshot is also added to the same parent qgroup In that case, we only need to add nodesize to the parent qgroup and avoid a full rescan. This patch would add the extra quick accounting update for such inherit. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
fs | ||
include | ||
init | ||
io_uring | ||
ipc | ||
kernel | ||
lib | ||
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mm | ||
net | ||
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usr | ||
virt | ||
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README |
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. 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.