netfs: Allow buffered shared-writeable mmap through netfs_page_mkwrite()

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Provide an entry point to delegate a filesystem's ->page_mkwrite() to.
This checks for conflicting writes, then attached any netfs-specific group
marking (e.g. ceph snap) to the page to be considered dirty.

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

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David Howells 2022-02-15 23:15:57 +00:00

parent 938e13a73b

commit 102a7e2c59

2 changed files with 63 additions and 0 deletions

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59

fs/netfs/buffered_write.c

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4

include/linux/netfs.h

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