diff options
Diffstat (limited to 'fs/udf')
-rw-r--r-- | fs/udf/inode.c | 56 |
1 files changed, 23 insertions, 33 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 08808683c7fd..31088e905150 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -58,7 +58,7 @@ static umode_t udf_convert_permissions(struct fileEntry *); static int udf_update_inode(struct inode *, int); static int udf_sync_inode(struct inode *inode); static int udf_alloc_i_data(struct inode *inode, size_t size); -static sector_t inode_getblk(struct inode *, sector_t, int *, int *); +static int inode_getblk(struct inode *inode, struct udf_map_rq *map); static int udf_insert_aext(struct inode *, struct extent_position, struct kernel_lb_addr, uint32_t); static void udf_split_extents(struct inode *, int *, int, udf_pblk_t, @@ -336,7 +336,7 @@ struct udf_map_rq { static int udf_map_block(struct inode *inode, struct udf_map_rq *map) { - int err, new; + int err; struct udf_inode_info *iinfo = UDF_I(inode); map->oflags = 0; @@ -367,14 +367,9 @@ static int udf_map_block(struct inode *inode, struct udf_map_rq *map) if (((loff_t)map->lblk) << inode->i_blkbits > iinfo->i_lenExtents) udf_discard_prealloc(inode); udf_clear_extent_cache(inode); - map->pblk = inode_getblk(inode, map->lblk, &err, &new); + err = inode_getblk(inode, map); up_write(&iinfo->i_data_sem); - if (err) - return err; - map->oflags |= UDF_BLK_MAPPED; - if (new) - map->oflags |= UDF_BLK_NEW; - return 0; + return err; } static int udf_get_block(struct inode *inode, sector_t block, @@ -627,8 +622,7 @@ out: return err; } -static sector_t inode_getblk(struct inode *inode, sector_t block, - int *err, int *new) +static int inode_getblk(struct inode *inode, struct udf_map_rq *map) { struct kernel_long_ad laarr[EXTENT_MERGE_SIZE]; struct extent_position prev_epos, cur_epos, next_epos; @@ -637,21 +631,20 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, struct kernel_lb_addr eloc, tmpeloc; int c = 1; loff_t lbcount = 0, b_off = 0; - udf_pblk_t newblocknum, newblock = 0; + udf_pblk_t newblocknum; sector_t offset = 0; int8_t etype; struct udf_inode_info *iinfo = UDF_I(inode); udf_pblk_t goal = 0, pgoal = iinfo->i_location.logicalBlockNum; int lastblock = 0; bool isBeyondEOF; + int ret = 0; - *err = 0; - *new = 0; prev_epos.offset = udf_file_entry_alloc_offset(inode); prev_epos.block = iinfo->i_location; prev_epos.bh = NULL; cur_epos = next_epos = prev_epos; - b_off = (loff_t)block << inode->i_sb->s_blocksize_bits; + b_off = (loff_t)map->lblk << inode->i_sb->s_blocksize_bits; /* find the extent which contains the block we are looking for. alternate between laarr[0] and laarr[1] for locations of the @@ -715,13 +708,13 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, inode->i_sb->s_blocksize); udf_write_aext(inode, &cur_epos, &eloc, elen, 1); } - newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset); + map->oflags = UDF_BLK_MAPPED; + map->pblk = udf_get_lb_pblock(inode->i_sb, &eloc, offset); goto out_free; } /* Are we beyond EOF and preallocated extent? */ if (etype == -1) { - int ret; loff_t hole_len; isBeyondEOF = true; @@ -741,10 +734,8 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, /* Create extents for the hole between EOF and offset */ hole_len = (loff_t)offset << inode->i_blkbits; ret = udf_do_extend_file(inode, &prev_epos, laarr, hole_len); - if (ret < 0) { - *err = ret; + if (ret < 0) goto out_free; - } c = 0; offset = 0; count += ret; @@ -794,7 +785,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, if ((laarr[c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30)) newblocknum = laarr[c].extLocation.logicalBlockNum + offset; else { /* otherwise, allocate a new block */ - if (iinfo->i_next_alloc_block == block) + if (iinfo->i_next_alloc_block == map->lblk) goal = iinfo->i_next_alloc_goal; if (!goal) { @@ -804,11 +795,9 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, newblocknum = udf_new_block(inode->i_sb, inode, iinfo->i_location.partitionReferenceNum, - goal, err); - if (!newblocknum) { - *err = -ENOSPC; + goal, &ret); + if (!newblocknum) goto out_free; - } if (isBeyondEOF) iinfo->i_lenExtents += inode->i_sb->s_blocksize; } @@ -832,18 +821,18 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, /* write back the new extents, inserting new extents if the new number * of extents is greater than the old number, and deleting extents if * the new number of extents is less than the old number */ - *err = udf_update_extents(inode, laarr, startnum, endnum, &prev_epos); - if (*err < 0) + ret = udf_update_extents(inode, laarr, startnum, endnum, &prev_epos); + if (ret < 0) goto out_free; - newblock = udf_get_pblock(inode->i_sb, newblocknum, + map->pblk = udf_get_pblock(inode->i_sb, newblocknum, iinfo->i_location.partitionReferenceNum, 0); - if (!newblock) { - *err = -EIO; + if (!map->pblk) { + ret = -EFSCORRUPTED; goto out_free; } - *new = 1; - iinfo->i_next_alloc_block = block + 1; + map->oflags = UDF_BLK_NEW | UDF_BLK_MAPPED; + iinfo->i_next_alloc_block = map->lblk + 1; iinfo->i_next_alloc_goal = newblocknum + 1; inode->i_ctime = current_time(inode); @@ -851,11 +840,12 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, udf_sync_inode(inode); else mark_inode_dirty(inode); + ret = 0; out_free: brelse(prev_epos.bh); brelse(cur_epos.bh); brelse(next_epos.bh); - return newblock; + return ret; } static void udf_split_extents(struct inode *inode, int *c, int offset, |