diff options
| author | David Howells <dhowells@redhat.com> | 2022-01-07 10:57:45 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-01-21 21:36:28 +0000 |
| commit | 6633213139d827fb9abf9a9a280f3d9e89fc7091 (patch) | |
| tree | 73b603360942f71883ec614b48325161f0348b50 /fs/cachefiles | |
| parent | 14b9d0902dfa25dac9c41bf346aa655fdeafe5b2 (diff) | |
cachefiles: Check that the backing filesystem supports tmpfiles
Add a check that the backing filesystem supports the creation of
tmpfiles[1].
Suggested-by: Jeff Layton <jlayton@kernel.org>
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/568749bd7cc02908ecf6f3d6a611b6f9cf5c4afd.camel@kernel.org/ [1]
Link: https://lore.kernel.org/r/164251406558.3435901.1249023136670058162.stgit@warthog.procyon.org.uk/ # v1
Diffstat (limited to 'fs/cachefiles')
| -rw-r--r-- | fs/cachefiles/cache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/cachefiles/cache.c b/fs/cachefiles/cache.c index 2b2879c5d1d2..7077f72e6f47 100644 --- a/fs/cachefiles/cache.c +++ b/fs/cachefiles/cache.c @@ -51,6 +51,7 @@ int cachefiles_add_cache(struct cachefiles_cache *cache) /* Check features of the backing filesystem: * - Directories must support looking up and directory creation + * - We create tmpfiles to handle invalidation * - We use xattrs to store metadata * - We need to be able to query the amount of space available * - We want to be able to sync the filesystem when stopping the cache @@ -60,6 +61,7 @@ int cachefiles_add_cache(struct cachefiles_cache *cache) if (d_is_negative(root) || !d_backing_inode(root)->i_op->lookup || !d_backing_inode(root)->i_op->mkdir || + !d_backing_inode(root)->i_op->tmpfile || !(d_backing_inode(root)->i_opflags & IOP_XATTR) || !root->d_sb->s_op->statfs || !root->d_sb->s_op->sync_fs || |