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Code Issues Releases Wiki Activity

ufs_getfrag_block(): get rid of macro jungles

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-06-19 00:32:42 -04:00
parent bbb3eb9d34
commit 8d9dcf1436
1 changed files with 22 additions and 29 deletions
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51
fs/ufs/inode.c
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@ -465,49 +465,42 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff
err = 0;
ptr = fragment;
/*
* ok, these macros clean the logic up a bit and make
* it much more readable:
*/
#define GET_INODE_DATABLOCK(x) \
ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new,\
bh_result->b_page)
#define GET_INODE_PTR(x) \
ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL,\
bh_result->b_page)
#define GET_INDIRECT_DATABLOCK(x) \
ufs_inode_getblock(inode, bh, x, fragment, \
&err, &phys, &new, bh_result->b_page)
#define GET_INDIRECT_PTR(x) \
ufs_inode_getblock(inode, bh, x, fragment, \
&err, NULL, NULL, NULL)
if (depth == 1) {
bh = GET_INODE_DATABLOCK(ptr);
bh = ufs_inode_getfrag(inode, ptr, fragment, 1, &err, &phys,
&new, bh_result->b_page);
goto out;
}
ptr -= UFS_NDIR_FRAGMENT;
if (depth == 2) {
bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift));
bh = ufs_inode_getfrag(inode,
UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift),
fragment, uspi->s_fpb, &err, NULL, NULL,
bh_result->b_page);
goto get_indirect;
}
ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift);
if (depth == 3) {
bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift));
bh = ufs_inode_getfrag(inode,
UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift),
fragment, uspi->s_fpb, &err, NULL, NULL,
bh_result->b_page);
goto get_double;
}
ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift);
bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift));
bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask);
bh = ufs_inode_getfrag(inode,
UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift),
fragment, uspi->s_fpb, &err, NULL, NULL,
bh_result->b_page);
bh = ufs_inode_getblock(inode, bh,
(ptr >> uspi->s_2apbshift) & uspi->s_apbmask,
fragment, &err, NULL, NULL, NULL);
get_double:
bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask);
bh = ufs_inode_getblock(inode, bh,
(ptr >> uspi->s_apbshift) & uspi->s_apbmask,
fragment, &err, NULL, NULL, NULL);
get_indirect:
bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask);
#undef GET_INODE_DATABLOCK
#undef GET_INODE_PTR
#undef GET_INDIRECT_DATABLOCK
#undef GET_INDIRECT_PTR
bh = ufs_inode_getblock(inode, bh, ptr & uspi->s_apbmask, fragment,
&err, &phys, &new, bh_result->b_page);
out:
if (err)