diff options
Diffstat (limited to 'fs/ufs')
| -rw-r--r-- | fs/ufs/inode.c | 88 |
1 files changed, 55 insertions, 33 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 156ba3c26906..eeccf45fcd57 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -218,7 +218,7 @@ changed: * @new: we set it if we allocate new block * @locked_page: for ufs_new_fragments() */ -static struct buffer_head * +static u64 ufs_inode_getfrag(struct inode *inode, u64 fragment, sector_t new_fragment, unsigned int required, int *err, long *phys, int *new, struct page *locked_page) @@ -267,7 +267,7 @@ ufs_inode_getfrag(struct inode *inode, u64 fragment, uspi->s_fpb - lastblockoff, err, locked_page); if (!tmp) - return NULL; + return 0; lastfrag = ufsi->i_lastfrag; } tmp = ufs_data_ptr_to_cpu(sb, @@ -304,7 +304,7 @@ ufs_inode_getfrag(struct inode *inode, u64 fragment, } if (!tmp) { *err = -ENOSPC; - return NULL; + return 0; } if (phys) { @@ -316,13 +316,7 @@ ufs_inode_getfrag(struct inode *inode, u64 fragment, ufs_sync_inode (inode); mark_inode_dirty(inode); out: - tmp += uspi->s_sbbase + blockoff; - if (!phys) { - return sb_getblk(sb, tmp); - } else { - *phys = tmp; - return NULL; - } + return tmp + uspi->s_sbbase; /* This part : To be implemented .... Required only for writing, not required for READ-ONLY. @@ -353,26 +347,22 @@ repeat2: * @new: see ufs_inode_getfrag() * @locked_page: see ufs_inode_getfrag() */ -static struct buffer_head * +static u64 ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, u64 fragment, sector_t new_fragment, int *err, long *phys, int *new, struct page *locked_page) { struct super_block *sb = inode->i_sb; struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; - struct buffer_head * result; - unsigned blockoff; u64 tmp = 0, goal, block; void *p; block = ufs_fragstoblks (fragment); - blockoff = ufs_fragnum (fragment); UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n", inode->i_ino, (unsigned long long)fragment, (unsigned long long)new_fragment, !phys); - result = NULL; if (!bh) goto out; if (!buffer_uptodate(bh)) { @@ -411,16 +401,10 @@ ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, mark_inode_dirty(inode); out: brelse (bh); - if (tmp) { - tmp += uspi->s_sbbase + blockoff; - if (phys) { - *phys = tmp; - } else { - result = sb_getblk(sb, tmp); - } - } UFSD("EXIT\n"); - return result; + if (tmp) + tmp += uspi->s_sbbase; + return tmp; } /** @@ -439,11 +423,12 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff int depth = ufs_block_to_path(inode, fragment >> uspi->s_fpbshift, offsets); unsigned long ptr,phys; u64 phys64 = 0; + unsigned frag = fragment & uspi->s_fpbmask; if (!create) { phys64 = ufs_frag_map(inode, offsets, depth); if (phys64) { - phys64 += fragment & uspi->s_fpbmask; + phys64 += frag; map_bh(bh_result, sb, phys64); } return 0; @@ -466,42 +451,79 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff ptr = fragment; if (depth == 1) { - bh = ufs_inode_getfrag(inode, ptr, fragment, 1, &err, &phys, + phys64 = ufs_inode_getfrag(inode, ptr, fragment, 1, &err, &phys, &new, bh_result->b_page); + if (phys64) { + phys64 += frag; + phys = phys64; + } goto out; } ptr -= UFS_NDIR_FRAGMENT; if (depth == 2) { - bh = ufs_inode_getfrag(inode, + phys64 = ufs_inode_getfrag(inode, UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift), fragment, uspi->s_fpb, &err, NULL, NULL, bh_result->b_page); + if (phys64) { + phys64 += (ptr >> uspi->s_apbshift) & uspi->s_fpbmask; + bh = sb_getblk(sb, phys64); + } else { + bh = NULL; + } goto get_indirect; } ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift); if (depth == 3) { - bh = ufs_inode_getfrag(inode, + phys64 = ufs_inode_getfrag(inode, UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift), fragment, uspi->s_fpb, &err, NULL, NULL, bh_result->b_page); + if (phys64) { + phys64 += (ptr >> uspi->s_2apbshift) & uspi->s_fpbmask; + bh = sb_getblk(sb, phys64); + } else { + bh = NULL; + } goto get_double; } ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift); - bh = ufs_inode_getfrag(inode, + phys64 = 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, + if (phys64) { + phys64 += (ptr >> uspi->s_3apbshift) & uspi->s_fpbmask; + bh = sb_getblk(sb, phys64); + } else { + bh = NULL; + } + phys64 = ufs_inode_getblock(inode, bh, (ptr >> uspi->s_2apbshift) & uspi->s_apbmask, fragment, &err, NULL, NULL, NULL); + if (phys64) { + phys64 += (ptr >> uspi->s_2apbshift) & uspi->s_fpbmask, + bh = sb_getblk(sb, phys64); + } else { + bh = NULL; + } get_double: - bh = ufs_inode_getblock(inode, bh, + phys64 = ufs_inode_getblock(inode, bh, (ptr >> uspi->s_apbshift) & uspi->s_apbmask, fragment, &err, NULL, NULL, NULL); + if (phys64) { + phys64 += (ptr >> uspi->s_apbshift) & uspi->s_fpbmask, + bh = sb_getblk(sb, phys64); + } else { + bh = NULL; + } get_indirect: - bh = ufs_inode_getblock(inode, bh, ptr & uspi->s_apbmask, fragment, + phys64 = ufs_inode_getblock(inode, bh, ptr & uspi->s_apbmask, fragment, &err, &phys, &new, bh_result->b_page); - + if (phys64) { + phys64 += frag; + phys = phys64; + } out: if (err) goto abort; |