From aa2dd0ad4d6d7dd85bb13ed64b872803be046f96 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 20 Jul 2016 11:48:46 +1000 Subject: [PATCH] xfs: remove __arch_pack Instead we always declare struct xfs_dir2_sf_hdr as packed. That's the expected layout, and while most major architectures do the packing by default the new structure size and offset checker showed that not only the ARM old ABI got this wrong, but various minor embedded architectures did as well. [Verified that no code change on x86-64 results from this change] Signed-off-by: Christoph Hellwig Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/libxfs/xfs_da_format.h | 2 +- fs/xfs/xfs_linux.h | 7 ------- 2 files changed, 1 insertion(+), 8 deletions(-) diff --git a/fs/xfs/libxfs/xfs_da_format.h b/fs/xfs/libxfs/xfs_da_format.h index f877bb17c6c3..685f23b67056 100644 --- a/fs/xfs/libxfs/xfs_da_format.h +++ b/fs/xfs/libxfs/xfs_da_format.h @@ -229,7 +229,7 @@ typedef struct xfs_dir2_sf_hdr { __uint8_t count; /* count of entries */ __uint8_t i8count; /* count of 8-byte inode #s */ __uint8_t parent[8]; /* parent dir inode number */ -} __arch_pack xfs_dir2_sf_hdr_t; +} __packed xfs_dir2_sf_hdr_t; typedef struct xfs_dir2_sf_entry { __u8 namelen; /* actual name length */ diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index a8192dc797dc..b8d64d520e12 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -328,13 +328,6 @@ static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y) return x; } -/* ARM old ABI has some weird alignment/padding */ -#if defined(__arm__) && !defined(__ARM_EABI__) -#define __arch_pack __attribute__((packed)) -#else -#define __arch_pack -#endif - #define ASSERT_ALWAYS(expr) \ (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) -- 2.20.1