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-rw-r--r--fs/crypto/crypto.c9
-rw-r--r--fs/crypto/fscrypt_private.h2
-rw-r--r--fs/crypto/keyinfo.c2
-rw-r--r--include/linux/fscrypto.h1
4 files changed, 9 insertions, 5 deletions
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c
index 5ffc59436397..bc1d4781b9ec 100644
--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -525,17 +525,22 @@ static void fscrypt_destroy(void)
/**
* fscrypt_initialize() - allocate major buffers for fs encryption.
+ * @cop_flags: fscrypt operations flags
*
* We only call this when we start accessing encrypted files, since it
* results in memory getting allocated that wouldn't otherwise be used.
*
* Return: Zero on success, non-zero otherwise.
*/
-int fscrypt_initialize(void)
+int fscrypt_initialize(unsigned int cop_flags)
{
int i, res = -ENOMEM;
- if (fscrypt_bounce_page_pool)
+ /*
+ * No need to allocate a bounce page pool if there already is one or
+ * this FS won't use it.
+ */
+ if (cop_flags & FS_CFLG_OWN_PAGES || fscrypt_bounce_page_pool)
return 0;
mutex_lock(&fscrypt_init_mutex);
diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h
index c98b2a7fb6d3..7ba10cd45a2e 100644
--- a/fs/crypto/fscrypt_private.h
+++ b/fs/crypto/fscrypt_private.h
@@ -85,7 +85,7 @@ struct fscrypt_completion_result {
/* crypto.c */
-int fscrypt_initialize(void);
+int fscrypt_initialize(unsigned int cop_flags);
/* keyinfo.c */
extern int fscrypt_get_crypt_info(struct inode *);
diff --git a/fs/crypto/keyinfo.c b/fs/crypto/keyinfo.c
index 35d3317a27b3..6eeea1dcba41 100644
--- a/fs/crypto/keyinfo.c
+++ b/fs/crypto/keyinfo.c
@@ -188,7 +188,7 @@ int fscrypt_get_crypt_info(struct inode *inode)
u8 *raw_key = NULL;
int res;
- res = fscrypt_initialize();
+ res = fscrypt_initialize(inode->i_sb->s_cop->flags);
if (res)
return res;
diff --git a/include/linux/fscrypto.h b/include/linux/fscrypto.h
index 188b4fa59cbf..1adc1c758d31 100644
--- a/include/linux/fscrypto.h
+++ b/include/linux/fscrypto.h
@@ -168,7 +168,6 @@ static inline void fscrypt_set_d_op(struct dentry *dentry)
#if IS_ENABLED(CONFIG_FS_ENCRYPTION)
/* crypto.c */
extern struct kmem_cache *fscrypt_info_cachep;
-
extern struct fscrypt_ctx *fscrypt_get_ctx(const struct inode *, gfp_t);
extern void fscrypt_release_ctx(struct fscrypt_ctx *);
extern struct page *fscrypt_encrypt_page(const struct inode *, struct page *,