[lustre-devel] [PATCH 30/32] lustre: remove some "#ifdef CONFIG*" from .c files.

[Andreas Dilger]

On Mar 13, 2019, at 18:11, NeilBrown <neilb at suse.com> wrote:
> 
> It is Linux policy to avoid #ifdef in C files where
> convenient - .h files are OK.
> 
> This patch defines a few inline functions which differ
> depending on CONFIG_LUSTRE_FS_POSIX_ACL, and removes
> some #ifdefs from .c files.
> 
> Signed-off-by: NeilBrown <neilb at suse.com>

Reviewed-by: Andreas Dilger <adilger at whamcloud.com>

> ---
> drivers/staging/lustre/lustre/include/obd.h        |   21 +++++++++++
> .../staging/lustre/lustre/llite/llite_internal.h   |   29 +++++++++++++++
> drivers/staging/lustre/lustre/llite/llite_lib.c    |   39 ++++----------------
> drivers/staging/lustre/lustre/mdc/mdc_request.c    |    8 ++--
> 4 files changed, 61 insertions(+), 36 deletions(-)
> 
> diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
> index 6c984732d9c2..354f7d64e08a 100644
> --- a/drivers/staging/lustre/lustre/include/obd.h
> +++ b/drivers/staging/lustre/lustre/include/obd.h
> @@ -37,6 +37,8 @@
> #include <linux/kobject.h>
> #include <linux/spinlock.h>
> #include <linux/sysfs.h>
> +#include <linux/fs.h>
> +#include <linux/posix_acl.h>
> 
> #include <uapi/linux/lustre/lustre_idl.h>
> #include <lustre_lib.h>
> @@ -878,6 +880,25 @@ struct lustre_md {
> 	struct mdt_remote_perm		*remote_perm;
> };
> 
> +#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> +static inline void lmd_clear_acl(struct lustre_md *md)
> +{
> +	if (md->posix_acl) {
> +		posix_acl_release(md->posix_acl);
> +		md->posix_acl = NULL;
> +	}
> +}
> +
> +#define OBD_CONNECT_ACL_FLAGS	\
> +	(OBD_CONNECT_ACL | OBD_CONNECT_UMASK | OBD_CONNECT_LARGE_ACL)
> +#else
> +static inline void lmd_clear_acl(struct lustre_md *md)
> +{
> +}
> +
> +#define OBD_CONNECT_ACL_FLAGS	(0)
> +#endif
> +
> struct md_open_data {
> 	struct obd_client_handle	*mod_och;
> 	struct ptlrpc_request		*mod_open_req;
> diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
> index 83053459f9c7..95ec46779c41 100644
> --- a/drivers/staging/lustre/lustre/llite/llite_internal.h
> +++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
> @@ -246,6 +246,35 @@ struct ll_inode_info {
> 	struct list_head		lli_xattrs;/* ll_xattr_entry->xe_list */
> };
> 
> +#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> +static inline void lli_clear_acl(struct ll_inode_info *lli)
> +{
> +	if (lli->lli_posix_acl) {
> +		posix_acl_release(lli->lli_posix_acl);
> +		lli->lli_posix_acl = NULL;
> +	}
> +}
> +
> +static inline void lli_replace_acl(struct ll_inode_info *lli,
> +				   struct lustre_md *md)
> +{
> +	spin_lock(&lli->lli_lock);
> +	if (lli->lli_posix_acl)
> +		posix_acl_release(lli->lli_posix_acl);
> +	lli->lli_posix_acl = md->posix_acl;
> +	spin_unlock(&lli->lli_lock);
> +}
> +#else
> +static inline void lli_clear_acl(struct ll_inode_info *lli)
> +{
> +}
> +
> +static inline void lli_replace_acl(struct ll_inode_info *lli,
> +				   struct lustre_md *md)
> +{
> +}
> +#endif
> +
> static inline u32 ll_layout_version_get(struct ll_inode_info *lli)
> {
> 	u32 gen;
> diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
> index e55a4e0f68bf..d4325b49b924 100644
> --- a/drivers/staging/lustre/lustre/llite/llite_lib.c
> +++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
> @@ -209,10 +209,8 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
> 
> 	if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
> 		data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
> -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> -	data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK |
> -				   OBD_CONNECT_LARGE_ACL;
> -#endif
> +
> +	data->ocd_connect_flags |= OBD_CONNECT_ACL_FLAGS;
> 
> 	if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
> 		/* flag mdc connection as lightweight, only used for test
> @@ -512,12 +510,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt)
> 	ptlrpc_req_finished(request);
> 
> 	if (IS_ERR(root)) {
> -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> -		if (lmd.posix_acl) {
> -			posix_acl_release(lmd.posix_acl);
> -			lmd.posix_acl = NULL;
> -		}
> -#endif
> +		lmd_clear_acl(&lmd);
> 		err = -EBADF;
> 		CERROR("lustre_lite: bad iget4 for root\n");
> 		goto out_root;
> @@ -1394,13 +1387,8 @@ void ll_clear_inode(struct inode *inode)
> 
> 	ll_xattr_cache_destroy(inode);
> 
> -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> 	forget_all_cached_acls(inode);
> -	if (lli->lli_posix_acl) {
> -		posix_acl_release(lli->lli_posix_acl);
> -		lli->lli_posix_acl = NULL;
> -	}
> -#endif
> +	lli_clear_acl(lli);
> 	lli->lli_inode_magic = LLI_INODE_DEAD;
> 
> 	if (S_ISDIR(inode->i_mode))
> @@ -1825,15 +1813,9 @@ int ll_update_inode(struct inode *inode, struct lustre_md *md)
> 			return rc;
> 	}
> 
> -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> -	if (body->mbo_valid & OBD_MD_FLACL) {
> -		spin_lock(&lli->lli_lock);
> -		if (lli->lli_posix_acl)
> -			posix_acl_release(lli->lli_posix_acl);
> -		lli->lli_posix_acl = md->posix_acl;
> -		spin_unlock(&lli->lli_lock);
> -	}
> -#endif
> +	if (body->mbo_valid & OBD_MD_FLACL)
> +		lli_replace_acl(lli, md);
> +
> 	inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
> 					sbi->ll_flags & LL_SBI_32BIT_API);
> 	inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
> @@ -2239,12 +2221,7 @@ int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
> 					     sbi->ll_flags & LL_SBI_32BIT_API),
> 				 &md);
> 		if (IS_ERR(*inode)) {
> -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> -			if (md.posix_acl) {
> -				posix_acl_release(md.posix_acl);
> -				md.posix_acl = NULL;
> -			}
> -#endif
> +			lmd_clear_acl(&md);
> 			rc = PTR_ERR(*inode);
> 			CERROR("new_inode -fatal: rc %d\n", rc);
> 			goto out;
> diff --git a/drivers/staging/lustre/lustre/mdc/mdc_request.c b/drivers/staging/lustre/lustre/mdc/mdc_request.c
> index b54c5f1418ae..a0b74244f295 100644
> --- a/drivers/staging/lustre/lustre/mdc/mdc_request.c
> +++ b/drivers/staging/lustre/lustre/mdc/mdc_request.c
> @@ -543,11 +543,9 @@ static int mdc_get_lustre_md(struct obd_export *exp,
> 	}
> 
> out:
> -	if (rc) {
> -#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
> -		posix_acl_release(md->posix_acl);
> -#endif
> -	}
> +	if (rc)
> +		lmd_clear_acl(md);
> +
> 	return rc;
> }
> 
> 
> 

Cheers, Andreas
---
Andreas Dilger
Principal Lustre Architect
Whamcloud