diff options
author | Christoph Hellwig <hch@lst.de> | 2023-12-20 09:34:55 +0300 |
---|---|---|
committer | Chandan Babu R <chandanbabu@kernel.org> | 2023-12-29 11:07:03 +0300 |
commit | 6e145f943bd86be47e54101fa5939f9ed0cb73e5 (patch) | |
tree | 41ed6b10fa716cbf10981949fa1220abd6a3ad57 /fs/xfs/libxfs/xfs_inode_fork.c | |
parent | e1ead237407a7f42957f6108a95cf093ce6c2c5d (diff) | |
download | linux-6e145f943bd86be47e54101fa5939f9ed0cb73e5.tar.xz |
xfs: make if_data a void pointer
The xfs_ifork structure currently has a union of the if_root void pointer
and the if_data char pointer. In either case it is an opaque pointer
that depends on the fork format. Replace the union with a single if_data
void pointer as that is what almost all callers want. Only the symlink
NULL termination code in xfs_init_local_fork actually needs a new local
variable now.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Diffstat (limited to 'fs/xfs/libxfs/xfs_inode_fork.c')
-rw-r--r-- | fs/xfs/libxfs/xfs_inode_fork.c | 53 |
1 files changed, 24 insertions, 29 deletions
diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c index b86d57589f67..d23910e503a1 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.c +++ b/fs/xfs/libxfs/xfs_inode_fork.c @@ -50,12 +50,15 @@ xfs_init_local_fork( mem_size++; if (size) { - ifp->if_u1.if_data = kmem_alloc(mem_size, KM_NOFS); - memcpy(ifp->if_u1.if_data, data, size); + char *new_data = kmem_alloc(mem_size, KM_NOFS); + + memcpy(new_data, data, size); if (zero_terminate) - ifp->if_u1.if_data[size] = '\0'; + new_data[size] = '\0'; + + ifp->if_data = new_data; } else { - ifp->if_u1.if_data = NULL; + ifp->if_data = NULL; } ifp->if_bytes = size; @@ -125,7 +128,7 @@ xfs_iformat_extents( } ifp->if_bytes = 0; - ifp->if_u1.if_root = NULL; + ifp->if_data = NULL; ifp->if_height = 0; if (size) { dp = (xfs_bmbt_rec_t *) XFS_DFORK_PTR(dip, whichfork); @@ -212,7 +215,7 @@ xfs_iformat_btree( ifp->if_broot, size); ifp->if_bytes = 0; - ifp->if_u1.if_root = NULL; + ifp->if_data = NULL; ifp->if_height = 0; return 0; } @@ -509,14 +512,14 @@ xfs_idata_realloc( return; if (new_size == 0) { - kmem_free(ifp->if_u1.if_data); - ifp->if_u1.if_data = NULL; + kmem_free(ifp->if_data); + ifp->if_data = NULL; ifp->if_bytes = 0; return; } - ifp->if_u1.if_data = krealloc(ifp->if_u1.if_data, new_size, - GFP_NOFS | __GFP_NOFAIL); + ifp->if_data = krealloc(ifp->if_data, new_size, + GFP_NOFS | __GFP_NOFAIL); ifp->if_bytes = new_size; } @@ -532,8 +535,8 @@ xfs_idestroy_fork( switch (ifp->if_format) { case XFS_DINODE_FMT_LOCAL: - kmem_free(ifp->if_u1.if_data); - ifp->if_u1.if_data = NULL; + kmem_free(ifp->if_data); + ifp->if_data = NULL; break; case XFS_DINODE_FMT_EXTENTS: case XFS_DINODE_FMT_BTREE: @@ -626,9 +629,9 @@ xfs_iflush_fork( case XFS_DINODE_FMT_LOCAL: if ((iip->ili_fields & dataflag[whichfork]) && (ifp->if_bytes > 0)) { - ASSERT(ifp->if_u1.if_data != NULL); + ASSERT(ifp->if_data != NULL); ASSERT(ifp->if_bytes <= xfs_inode_fork_size(ip, whichfork)); - memcpy(cp, ifp->if_u1.if_data, ifp->if_bytes); + memcpy(cp, ifp->if_data, ifp->if_bytes); } break; @@ -706,17 +709,15 @@ xfs_ifork_verify_local_data( case S_IFDIR: { struct xfs_mount *mp = ip->i_mount; struct xfs_ifork *ifp = xfs_ifork_ptr(ip, XFS_DATA_FORK); - struct xfs_dir2_sf_hdr *sfp; + struct xfs_dir2_sf_hdr *sfp = ifp->if_data; - sfp = (struct xfs_dir2_sf_hdr *)ifp->if_u1.if_data; fa = xfs_dir2_sf_verify(mp, sfp, ifp->if_bytes); break; } case S_IFLNK: { struct xfs_ifork *ifp = xfs_ifork_ptr(ip, XFS_DATA_FORK); - fa = xfs_symlink_shortform_verify(ifp->if_u1.if_data, - ifp->if_bytes); + fa = xfs_symlink_shortform_verify(ifp->if_data, ifp->if_bytes); break; } default: @@ -725,7 +726,7 @@ xfs_ifork_verify_local_data( if (fa) { xfs_inode_verifier_error(ip, -EFSCORRUPTED, "data fork", - ip->i_df.if_u1.if_data, ip->i_df.if_bytes, fa); + ip->i_df.if_data, ip->i_df.if_bytes, fa); return -EFSCORRUPTED; } @@ -743,20 +744,14 @@ xfs_ifork_verify_local_attr( if (!xfs_inode_has_attr_fork(ip)) { fa = __this_address; } else { - struct xfs_attr_shortform *sfp; - struct xfs_ifork *ifp; - int64_t size; - - ASSERT(ip->i_af.if_format == XFS_DINODE_FMT_LOCAL); - ifp = xfs_ifork_ptr(ip, XFS_ATTR_FORK); - sfp = (struct xfs_attr_shortform *)ifp->if_u1.if_data; - size = ifp->if_bytes; + struct xfs_ifork *ifp = &ip->i_af; - fa = xfs_attr_shortform_verify(sfp, size); + ASSERT(ifp->if_format == XFS_DINODE_FMT_LOCAL); + fa = xfs_attr_shortform_verify(ifp->if_data, ifp->if_bytes); } if (fa) { xfs_inode_verifier_error(ip, -EFSCORRUPTED, "attr fork", - ifp->if_u1.if_data, ifp->if_bytes, fa); + ifp->if_data, ifp->if_bytes, fa); return -EFSCORRUPTED; } |