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| author |   David Howells <dhowells@redhat.com> | 2021-11-18 08:58:08 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-01-07 13:42:29 +0000 |
| commit | 169379eaef933ca98c279257cacb313a02f9984d (patch) | |
| tree | f6f4ebe27265f948217b25a3adde5685f90d4806 /fs/cachefiles/internal.h | |
| parent | cachefiles: Implement metadata/coherency data storage in xattrs (diff) | |
| download | linux-dev-169379eaef933ca98c279257cacb313a02f9984d.tar.xz linux-dev-169379eaef933ca98c279257cacb313a02f9984d.zip | |
cachefiles: Mark a backing file in use with an inode flag
Use an inode flag, S_KERNEL_FILE, to mark that a backing file is in use by
the kernel to prevent cachefiles or other kernel services from interfering
with that file.
Using S_SWAPFILE instead isn't really viable as that has other effects in
the I/O paths.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/163819642273.215744.6414248677118690672.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906943215.143852.16972351425323967014.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967154118.1823006.13227551961786743991.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021541207.640689.564689725898537127.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/164021552299.640689.10578652796777392062.stgit@warthog.procyon.org.uk/ # v4
Diffstat (limited to 'fs/cachefiles/internal.h')
| -rw-r--r-- | fs/cachefiles/internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h index 01071e7a7c02..7c67a70a3dff 100644 --- a/fs/cachefiles/internal.h +++ b/fs/cachefiles/internal.h @@ -187,6 +187,8 @@ extern struct kmem_cache *cachefiles_object_jar; /* * namei.c */ +extern void cachefiles_unmark_inode_in_use(struct cachefiles_object *object, + struct file *file); extern struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, struct dentry *dir, const char *name, |