diff options
Diffstat (limited to 'fs/ufs')
| -rw-r--r-- | fs/ufs/balloc.c | 26 | ||||
| -rw-r--r-- | fs/ufs/inode.c | 9 | ||||
| -rw-r--r-- | fs/ufs/super.c | 18 | ||||
| -rw-r--r-- | fs/ufs/util.h | 10 |
4 files changed, 56 insertions, 7 deletions
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index dc5fae601c24..637e17cb0edd 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -81,7 +81,8 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) ufs_error (sb, "ufs_free_fragments", "bit already cleared for fragment %u", i); } - + + inode_sub_bytes(inode, count << uspi->s_fshift); fs32_add(sb, &ucg->cg_cs.cs_nffree, count); uspi->cs_total.cs_nffree += count; fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, count); @@ -183,6 +184,7 @@ do_more: ufs_error(sb, "ufs_free_blocks", "freeing free fragment"); } ubh_setblock(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno); + inode_sub_bytes(inode, uspi->s_fpb << uspi->s_fshift); if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD) ufs_clusteracct (sb, ucpi, blkno, 1); @@ -494,6 +496,20 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, return 0; } +static bool try_add_frags(struct inode *inode, unsigned frags) +{ + unsigned size = frags * i_blocksize(inode); + spin_lock(&inode->i_lock); + __inode_add_bytes(inode, size); + if (unlikely((u32)inode->i_blocks != inode->i_blocks)) { + __inode_sub_bytes(inode, size); + spin_unlock(&inode->i_lock); + return false; + } + spin_unlock(&inode->i_lock); + return true; +} + static u64 ufs_add_fragments(struct inode *inode, u64 fragment, unsigned oldcount, unsigned newcount) { @@ -530,6 +546,9 @@ static u64 ufs_add_fragments(struct inode *inode, u64 fragment, for (i = oldcount; i < newcount; i++) if (ubh_isclr (UCPI_UBH(ucpi), ucpi->c_freeoff, fragno + i)) return 0; + + if (!try_add_frags(inode, count)) + return 0; /* * Block can be extended */ @@ -647,6 +666,7 @@ cg_found: ubh_setbit (UCPI_UBH(ucpi), ucpi->c_freeoff, goal + i); i = uspi->s_fpb - count; + inode_sub_bytes(inode, i << uspi->s_fshift); fs32_add(sb, &ucg->cg_cs.cs_nffree, i); uspi->cs_total.cs_nffree += i; fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, i); @@ -657,6 +677,8 @@ cg_found: result = ufs_bitmap_search (sb, ucpi, goal, allocsize); if (result == INVBLOCK) return 0; + if (!try_add_frags(inode, count)) + return 0; for (i = 0; i < count; i++) ubh_clrbit (UCPI_UBH(ucpi), ucpi->c_freeoff, result + i); @@ -716,6 +738,8 @@ norot: return INVBLOCK; ucpi->c_rotor = result; gotit: + if (!try_add_frags(inode, uspi->s_fpb)) + return 0; blkno = ufs_fragstoblks(result); ubh_clrblock (UCPI_UBH(ucpi), ucpi->c_freeoff, blkno); if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD) diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index a064cf44b143..1f69bb9b1e9d 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -235,7 +235,8 @@ ufs_extend_tail(struct inode *inode, u64 writes_to, p = ufs_get_direct_data_ptr(uspi, ufsi, block); tmp = ufs_new_fragments(inode, p, lastfrag, ufs_data_ptr_to_cpu(sb, p), - new_size, err, locked_page); + new_size - (lastfrag & uspi->s_fpbmask), err, + locked_page); return tmp != 0; } @@ -284,7 +285,7 @@ ufs_inode_getfrag(struct inode *inode, unsigned index, goal += uspi->s_fpb; } tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), - goal, uspi->s_fpb, err, locked_page); + goal, nfrags, err, locked_page); if (!tmp) { *err = -ENOSPC; @@ -402,7 +403,9 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff if (!create) { phys64 = ufs_frag_map(inode, offsets, depth); - goto out; + if (phys64) + map_bh(bh_result, sb, phys64 + frag); + return 0; } /* This code entered only while writing ....? */ diff --git a/fs/ufs/super.c b/fs/ufs/super.c index f6390eec02ca..10f364490833 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -746,6 +746,23 @@ static void ufs_put_super(struct super_block *sb) return; } +static u64 ufs_max_bytes(struct super_block *sb) +{ + struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; + int bits = uspi->s_apbshift; + u64 res; + + if (bits > 21) + res = ~0ULL; + else + res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) + + (1LL << (3*bits)); + + if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift)) + return MAX_LFS_FILESIZE; + return res << uspi->s_bshift; +} + static int ufs_fill_super(struct super_block *sb, void *data, int silent) { struct ufs_sb_info * sbi; @@ -1212,6 +1229,7 @@ magic_found: "fast symlink size (%u)\n", uspi->s_maxsymlinklen); uspi->s_maxsymlinklen = maxsymlen; } + sb->s_maxbytes = ufs_max_bytes(sb); sb->s_max_links = UFS_LINK_MAX; inode = ufs_iget(sb, UFS_ROOTINO); diff --git a/fs/ufs/util.h b/fs/ufs/util.h index 954175928240..3f9463f8cf2f 100644 --- a/fs/ufs/util.h +++ b/fs/ufs/util.h @@ -473,15 +473,19 @@ static inline unsigned _ubh_find_last_zero_bit_( static inline int _ubh_isblockset_(struct ufs_sb_private_info * uspi, struct ufs_buffer_head * ubh, unsigned begin, unsigned block) { + u8 mask; switch (uspi->s_fpb) { case 8: return (*ubh_get_addr (ubh, begin + block) == 0xff); case 4: - return (*ubh_get_addr (ubh, begin + (block >> 1)) == (0x0f << ((block & 0x01) << 2))); + mask = 0x0f << ((block & 0x01) << 2); + return (*ubh_get_addr (ubh, begin + (block >> 1)) & mask) == mask; case 2: - return (*ubh_get_addr (ubh, begin + (block >> 2)) == (0x03 << ((block & 0x03) << 1))); + mask = 0x03 << ((block & 0x03) << 1); + return (*ubh_get_addr (ubh, begin + (block >> 2)) & mask) == mask; case 1: - return (*ubh_get_addr (ubh, begin + (block >> 3)) == (0x01 << (block & 0x07))); + mask = 0x01 << (block & 0x07); + return (*ubh_get_addr (ubh, begin + (block >> 3)) & mask) == mask; } return 0; } |