diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cachefiles/cache.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/cachefiles/cache.c b/fs/cachefiles/cache.c index 1e9c71666c6a..2b2879c5d1d2 100644 --- a/fs/cachefiles/cache.c +++ b/fs/cachefiles/cache.c @@ -49,7 +49,13 @@ int cachefiles_add_cache(struct cachefiles_cache *cache) goto error_unsupported; } - /* check parameters */ + /* Check features of the backing filesystem: + * - Directories must support looking up and directory creation + * - 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 + * - We use DIO to/from pages, so the blocksize mustn't be too big. + */ ret = -EOPNOTSUPP; if (d_is_negative(root) || !d_backing_inode(root)->i_op->lookup || |