Add an IS_KERNEL_FILE() macro to test the S_KERNEL_FILE inode flag as is common practice for the other inode flags[1]. Suggested-by: Jeff Layton <jlayton@xxxxxxxxxx> Signed-off-by: David Howells <dhowells@xxxxxxxxxx> Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx> cc: linux-cachefs@xxxxxxxxxx Link: https://lore.kernel.org/r/88d7f8970dcc0fd0ead891b1f42f160b8d17d60e.camel@xxxxxxxxxx/ [1] --- fs/cachefiles/namei.c | 6 +++--- fs/namei.c | 2 +- include/linux/fs.h | 1 + 3 files changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index f256c8aff7bb..04563f759e99 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -20,7 +20,7 @@ static bool __cachefiles_mark_inode_in_use(struct cachefiles_object *object, struct inode *inode = d_backing_inode(dentry); bool can_use = false; - if (!(inode->i_flags & S_KERNEL_FILE)) { + if (!IS_KERNEL_FILE(inode)) { inode->i_flags |= S_KERNEL_FILE; trace_cachefiles_mark_active(object, inode); can_use = true; @@ -746,7 +746,7 @@ static struct dentry *cachefiles_lookup_for_cull(struct cachefiles_cache *cache, goto lookup_error; if (d_is_negative(victim)) goto lookup_put; - if (d_inode(victim)->i_flags & S_KERNEL_FILE) + if (IS_KERNEL_FILE(d_inode(victim))) goto lookup_busy; return victim; @@ -793,7 +793,7 @@ int cachefiles_cull(struct cachefiles_cache *cache, struct dentry *dir, /* check to see if someone is using this object */ inode = d_inode(victim); inode_lock(inode); - if (inode->i_flags & S_KERNEL_FILE) { + if (IS_KERNEL_FILE(inode)) { ret = -EBUSY; } else { /* Stop the cache from picking it back up */ diff --git a/fs/namei.c b/fs/namei.c index d81f04f8d818..c2175ab3849d 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3959,7 +3959,7 @@ int vfs_rmdir(struct user_namespace *mnt_userns, struct inode *dir, error = -EBUSY; if (is_local_mountpoint(dentry) || - (dentry->d_inode->i_flags & S_KERNEL_FILE)) + IS_KERNEL_FILE(dentry->d_inode)) goto out; error = security_inode_rmdir(dir, dentry); diff --git a/include/linux/fs.h b/include/linux/fs.h index f5d3bf5b69a6..227497793282 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2216,6 +2216,7 @@ static inline bool sb_rdonly(const struct super_block *sb) { return sb->s_flags #define IS_ENCRYPTED(inode) ((inode)->i_flags & S_ENCRYPTED) #define IS_CASEFOLDED(inode) ((inode)->i_flags & S_CASEFOLD) #define IS_VERITY(inode) ((inode)->i_flags & S_VERITY) +#define IS_KERNEL_FILE(inode) ((inode)->i_flags & S_KERNEL_FILE) #define IS_WHITEOUT(inode) (S_ISCHR(inode->i_mode) && \ (inode)->i_rdev == WHITEOUT_DEV)
