Re: [PATCH] xfs: remove unused xfs_ioctl32.h declarations

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On 1/18/22 12:30 PM, Darrick J. Wong wrote:
From: Darrick J. Wong <djwong@xxxxxxxxxx>

Remove these unused ia32 compat declarations; all the bits involved have
either been withdrawn or hoisted to the VFS.

Hm, don't we still have all the non-compat counterparts still live in
fs/xfs/libxfs/xfs_fs.h, or am I not keeping up?

#define XFS_IOC_RESVSP		_IOW ('X', 40, struct xfs_flock64)
#define XFS_IOC_UNRESVSP	_IOW ('X', 41, struct xfs_flock64)
#define XFS_IOC_RESVSP64	_IOW ('X', 42, struct xfs_flock64)
#define XFS_IOC_UNRESVSP64	_IOW ('X', 43, struct xfs_flock64)
#define XFS_IOC_ZERO_RANGE	_IOW ('X', 57, struct xfs_flock64)

Why remove the compat ones but leave the abo ve? Aren't these all valid and
tested ioctls, just under a different #define, and therefore harmless and
also useful for backwards compatibility?

I feel like I'm missing something. :)

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
  fs/xfs/xfs_ioctl32.h |   18 ------------------
  1 file changed, 18 deletions(-)

diff --git a/fs/xfs/xfs_ioctl32.h b/fs/xfs/xfs_ioctl32.h
index fc5a91f3a5e0..c14852362fce 100644
--- a/fs/xfs/xfs_ioctl32.h
+++ b/fs/xfs/xfs_ioctl32.h
@@ -142,24 +142,6 @@ typedef struct compat_xfs_fsop_attrmulti_handlereq {
  	_IOW('X', 123, struct compat_xfs_fsop_attrmulti_handlereq)
#ifdef BROKEN_X86_ALIGNMENT
-/* on ia32 l_start is on a 32-bit boundary */
-typedef struct compat_xfs_flock64 {
-	__s16		l_type;
-	__s16		l_whence;
-	__s64		l_start	__attribute__((packed));
-			/* len == 0 means until end of file */
-	__s64		l_len __attribute__((packed));
-	__s32		l_sysid;
-	__u32		l_pid;
-	__s32		l_pad[4];	/* reserve area */
-} compat_xfs_flock64_t;
-
-#define XFS_IOC_RESVSP_32	_IOW('X', 40, struct compat_xfs_flock64)
-#define XFS_IOC_UNRESVSP_32	_IOW('X', 41, struct compat_xfs_flock64)
-#define XFS_IOC_RESVSP64_32	_IOW('X', 42, struct compat_xfs_flock64)
-#define XFS_IOC_UNRESVSP64_32	_IOW('X', 43, struct compat_xfs_flock64)
-#define XFS_IOC_ZERO_RANGE_32	_IOW('X', 57, struct compat_xfs_flock64)
-
  typedef struct compat_xfs_fsop_geom_v1 {
  	__u32		blocksize;	/* filesystem (data) block size */
  	__u32		rtextsize;	/* realtime extent size		*/




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