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| author |   David Howells <dhowells@redhat.com> | 2023-11-27 13:58:07 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2023-12-24 15:08:49 +0000 |
| commit | c9c4ff12df110feb1b91951010f673f4b16e49e8 (patch) | |
| tree | 0145b64f713dc12b3bd82b5032d92f9a28624f3a /include/linux/writeback.h | |
| parent | netfs, fscache: Move /proc/fs/fscache to /proc/fs/netfs and put in a symlink (diff) | |
| download | wireguard-linux-c9c4ff12df110feb1b91951010f673f4b16e49e8.tar.xz wireguard-linux-c9c4ff12df110feb1b91951010f673f4b16e49e8.zip | |
netfs: Move pinning-for-writeback from fscache to netfs
Move the resource pinning-for-writeback from fscache code to netfslib code.
This is used to keep a cache backing object pinned whilst we have dirty
pages on the netfs inode in the pagecache such that VM writeback will be
able to reach it.
Whilst we're at it, switch the parameters of netfs_unpin_writeback() to
match ->write_inode() so that it can be used for that directly.
Note that this mechanism could be more generically useful than that for
network filesystems. Quite often they have to keep around other resources
(e.g. authentication tokens or network connections) until the writeback is
complete.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Diffstat (limited to 'include/linux/writeback.h')
| -rw-r--r-- | include/linux/writeback.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h index 083387c00f0c..1e08392fb43e 100644 --- a/include/linux/writeback.h +++ b/include/linux/writeback.h @@ -60,7 +60,7 @@ struct writeback_control { unsigned for_reclaim:1; /* Invoked from the page allocator */ unsigned range_cyclic:1; /* range_start is cyclic */ unsigned for_sync:1; /* sync(2) WB_SYNC_ALL writeback */ - unsigned unpinned_fscache_wb:1; /* Cleared I_PINNING_FSCACHE_WB */ + unsigned unpinned_netfs_wb:1; /* Cleared I_PINNING_NETFS_WB */ /* * When writeback IOs are bounced through async layers, only the |