forked from Minki/linux
ext4: Introduce ext4_lblk_t
This patch adds a new data type ext4_lblk_t to represent the logical file blocks. This is the preparatory patch to support large files in ext4 The follow up patch with convert the ext4_inode i_blocks to represent the number of blocks in file system block size. This changes makes it possible to have a block number 2**32 -1 which will result in overflow if the block number is represented by signed long. This patch convert all the block number to type ext4_lblk_t which is typedef to __u32 Also remove dead code ext4_ext_walk_space Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
This commit is contained in:
Aneesh Kumar K.V
Theodore Ts'o
parent
a72d7f834e
commit
725d26d3f0
@ -124,7 +124,7 @@ static int ext4_readdir(struct file * filp,
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offset = filp->f_pos & (sb->s_blocksize - 1);
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while (!error && !stored && filp->f_pos < inode->i_size) {
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unsigned long blk = filp->f_pos >> EXT4_BLOCK_SIZE_BITS(sb);
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ext4_lblk_t blk = filp->f_pos >> EXT4_BLOCK_SIZE_BITS(sb);
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struct buffer_head map_bh;
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struct buffer_head *bh = NULL;
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@ -144,7 +144,7 @@ static int ext4_ext_dirty(handle_t *handle, struct inode *inode,
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static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode,
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struct ext4_ext_path *path,
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ext4_fsblk_t block)
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ext4_lblk_t block)
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{
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struct ext4_inode_info *ei = EXT4_I(inode);
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ext4_fsblk_t bg_start;
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@ -367,13 +367,14 @@ static void ext4_ext_drop_refs(struct ext4_ext_path *path)
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* the header must be checked before calling this
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*/
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static void
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ext4_ext_binsearch_idx(struct inode *inode, struct ext4_ext_path *path, int block)
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ext4_ext_binsearch_idx(struct inode *inode,
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struct ext4_ext_path *path, ext4_lblk_t block)
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{
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struct ext4_extent_header *eh = path->p_hdr;
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struct ext4_extent_idx *r, *l, *m;
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ext_debug("binsearch for %d(idx): ", block);
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ext_debug("binsearch for %lu(idx): ", (unsigned long)block);
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l = EXT_FIRST_INDEX(eh) + 1;
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r = EXT_LAST_INDEX(eh);
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@ -425,7 +426,8 @@ ext4_ext_binsearch_idx(struct inode *inode, struct ext4_ext_path *path, int bloc
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* the header must be checked before calling this
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*/
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static void
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ext4_ext_binsearch(struct inode *inode, struct ext4_ext_path *path, int block)
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ext4_ext_binsearch(struct inode *inode,
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struct ext4_ext_path *path, ext4_lblk_t block)
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{
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struct ext4_extent_header *eh = path->p_hdr;
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struct ext4_extent *r, *l, *m;
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@ -438,7 +440,7 @@ ext4_ext_binsearch(struct inode *inode, struct ext4_ext_path *path, int block)
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return;
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}
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ext_debug("binsearch for %d: ", block);
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ext_debug("binsearch for %lu: ", (unsigned long)block);
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l = EXT_FIRST_EXTENT(eh) + 1;
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r = EXT_LAST_EXTENT(eh);
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@ -494,7 +496,8 @@ int ext4_ext_tree_init(handle_t *handle, struct inode *inode)
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}
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struct ext4_ext_path *
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ext4_ext_find_extent(struct inode *inode, int block, struct ext4_ext_path *path)
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ext4_ext_find_extent(struct inode *inode, ext4_lblk_t block,
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struct ext4_ext_path *path)
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{
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struct ext4_extent_header *eh;
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struct buffer_head *bh;
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@ -979,8 +982,8 @@ repeat:
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/* refill path */
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ext4_ext_drop_refs(path);
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path = ext4_ext_find_extent(inode,
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le32_to_cpu(newext->ee_block),
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path);
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(ext4_lblk_t)le32_to_cpu(newext->ee_block),
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path);
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if (IS_ERR(path))
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err = PTR_ERR(path);
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} else {
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@ -992,8 +995,8 @@ repeat:
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/* refill path */
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ext4_ext_drop_refs(path);
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path = ext4_ext_find_extent(inode,
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le32_to_cpu(newext->ee_block),
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path);
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(ext4_lblk_t)le32_to_cpu(newext->ee_block),
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path);
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if (IS_ERR(path)) {
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err = PTR_ERR(path);
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goto out;
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@ -1021,7 +1024,7 @@ out:
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* allocated block. Thus, index entries have to be consistent
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* with leaves.
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*/
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static unsigned long
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static ext4_lblk_t
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ext4_ext_next_allocated_block(struct ext4_ext_path *path)
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{
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int depth;
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@ -1054,7 +1057,7 @@ ext4_ext_next_allocated_block(struct ext4_ext_path *path)
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* ext4_ext_next_leaf_block:
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* returns first allocated block from next leaf or EXT_MAX_BLOCK
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*/
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static unsigned ext4_ext_next_leaf_block(struct inode *inode,
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static ext4_lblk_t ext4_ext_next_leaf_block(struct inode *inode,
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struct ext4_ext_path *path)
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{
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int depth;
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@ -1072,7 +1075,8 @@ static unsigned ext4_ext_next_leaf_block(struct inode *inode,
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while (depth >= 0) {
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if (path[depth].p_idx !=
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EXT_LAST_INDEX(path[depth].p_hdr))
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return le32_to_cpu(path[depth].p_idx[1].ei_block);
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return (ext4_lblk_t)
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le32_to_cpu(path[depth].p_idx[1].ei_block);
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depth--;
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}
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@ -1239,7 +1243,7 @@ unsigned int ext4_ext_check_overlap(struct inode *inode,
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struct ext4_extent *newext,
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struct ext4_ext_path *path)
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{
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unsigned long b1, b2;
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ext4_lblk_t b1, b2;
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unsigned int depth, len1;
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unsigned int ret = 0;
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@ -1260,7 +1264,7 @@ unsigned int ext4_ext_check_overlap(struct inode *inode,
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goto out;
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}
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/* check for wrap through zero */
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/* check for wrap through zero on extent logical start block*/
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if (b1 + len1 < b1) {
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len1 = EXT_MAX_BLOCK - b1;
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newext->ee_len = cpu_to_le16(len1);
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@ -1290,7 +1294,8 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode,
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struct ext4_extent *ex, *fex;
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struct ext4_extent *nearex; /* nearest extent */
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struct ext4_ext_path *npath = NULL;
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int depth, len, err, next;
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int depth, len, err;
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ext4_lblk_t next;
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unsigned uninitialized = 0;
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BUG_ON(ext4_ext_get_actual_len(newext) == 0);
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@ -1435,114 +1440,8 @@ cleanup:
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return err;
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}
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int ext4_ext_walk_space(struct inode *inode, unsigned long block,
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unsigned long num, ext_prepare_callback func,
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void *cbdata)
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{
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struct ext4_ext_path *path = NULL;
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struct ext4_ext_cache cbex;
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struct ext4_extent *ex;
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unsigned long next, start = 0, end = 0;
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unsigned long last = block + num;
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int depth, exists, err = 0;
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BUG_ON(func == NULL);
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BUG_ON(inode == NULL);
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while (block < last && block != EXT_MAX_BLOCK) {
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num = last - block;
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/* find extent for this block */
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path = ext4_ext_find_extent(inode, block, path);
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if (IS_ERR(path)) {
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err = PTR_ERR(path);
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path = NULL;
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break;
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}
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depth = ext_depth(inode);
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BUG_ON(path[depth].p_hdr == NULL);
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ex = path[depth].p_ext;
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next = ext4_ext_next_allocated_block(path);
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exists = 0;
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if (!ex) {
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/* there is no extent yet, so try to allocate
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* all requested space */
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start = block;
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end = block + num;
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} else if (le32_to_cpu(ex->ee_block) > block) {
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/* need to allocate space before found extent */
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start = block;
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end = le32_to_cpu(ex->ee_block);
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if (block + num < end)
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end = block + num;
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} else if (block >= le32_to_cpu(ex->ee_block)
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+ ext4_ext_get_actual_len(ex)) {
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/* need to allocate space after found extent */
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start = block;
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end = block + num;
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if (end >= next)
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end = next;
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} else if (block >= le32_to_cpu(ex->ee_block)) {
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/*
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* some part of requested space is covered
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* by found extent
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*/
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start = block;
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end = le32_to_cpu(ex->ee_block)
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+ ext4_ext_get_actual_len(ex);
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if (block + num < end)
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end = block + num;
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exists = 1;
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} else {
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BUG();
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}
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BUG_ON(end <= start);
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if (!exists) {
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cbex.ec_block = start;
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cbex.ec_len = end - start;
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cbex.ec_start = 0;
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cbex.ec_type = EXT4_EXT_CACHE_GAP;
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} else {
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cbex.ec_block = le32_to_cpu(ex->ee_block);
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cbex.ec_len = ext4_ext_get_actual_len(ex);
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cbex.ec_start = ext_pblock(ex);
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cbex.ec_type = EXT4_EXT_CACHE_EXTENT;
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}
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BUG_ON(cbex.ec_len == 0);
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err = func(inode, path, &cbex, cbdata);
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ext4_ext_drop_refs(path);
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if (err < 0)
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break;
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if (err == EXT_REPEAT)
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continue;
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else if (err == EXT_BREAK) {
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err = 0;
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break;
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}
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if (ext_depth(inode) != depth) {
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/* depth was changed. we have to realloc path */
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kfree(path);
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path = NULL;
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}
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block = cbex.ec_block + cbex.ec_len;
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}
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if (path) {
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ext4_ext_drop_refs(path);
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kfree(path);
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}
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return err;
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}
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static void
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ext4_ext_put_in_cache(struct inode *inode, __u32 block,
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ext4_ext_put_in_cache(struct inode *inode, ext4_lblk_t block,
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__u32 len, ext4_fsblk_t start, int type)
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{
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struct ext4_ext_cache *cex;
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@ -1561,10 +1460,11 @@ ext4_ext_put_in_cache(struct inode *inode, __u32 block,
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*/
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static void
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ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path,
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unsigned long block)
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ext4_lblk_t block)
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{
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int depth = ext_depth(inode);
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unsigned long lblock, len;
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unsigned long len;
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ext4_lblk_t lblock;
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struct ext4_extent *ex;
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ex = path[depth].p_ext;
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@ -1582,15 +1482,17 @@ ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path,
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(unsigned long) ext4_ext_get_actual_len(ex));
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} else if (block >= le32_to_cpu(ex->ee_block)
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+ ext4_ext_get_actual_len(ex)) {
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ext4_lblk_t next;
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lblock = le32_to_cpu(ex->ee_block)
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+ ext4_ext_get_actual_len(ex);
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len = ext4_ext_next_allocated_block(path);
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next = ext4_ext_next_allocated_block(path);
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ext_debug("cache gap(after): [%lu:%lu] %lu",
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(unsigned long) le32_to_cpu(ex->ee_block),
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(unsigned long) ext4_ext_get_actual_len(ex),
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(unsigned long) block);
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BUG_ON(len == lblock);
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len = len - lblock;
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BUG_ON(next == lblock);
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len = next - lblock;
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} else {
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lblock = len = 0;
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BUG();
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@ -1601,7 +1503,7 @@ ext4_ext_put_gap_in_cache(struct inode *inode, struct ext4_ext_path *path,
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}
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static int
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ext4_ext_in_cache(struct inode *inode, unsigned long block,
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ext4_ext_in_cache(struct inode *inode, ext4_lblk_t block,
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struct ext4_extent *ex)
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{
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struct ext4_ext_cache *cex;
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@ -1714,7 +1616,7 @@ int ext4_ext_calc_credits_for_insert(struct inode *inode,
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static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
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struct ext4_extent *ex,
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unsigned long from, unsigned long to)
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ext4_lblk_t from, ext4_lblk_t to)
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{
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struct buffer_head *bh;
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unsigned short ee_len = ext4_ext_get_actual_len(ex);
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@ -1738,11 +1640,12 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
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if (from >= le32_to_cpu(ex->ee_block)
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&& to == le32_to_cpu(ex->ee_block) + ee_len - 1) {
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/* tail removal */
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unsigned long num;
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ext4_lblk_t num;
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ext4_fsblk_t start;
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num = le32_to_cpu(ex->ee_block) + ee_len - from;
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start = ext_pblock(ex) + ee_len - num;
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ext_debug("free last %lu blocks starting %llu\n", num, start);
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ext_debug("free last %u blocks starting %llu\n", num, start);
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for (i = 0; i < num; i++) {
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bh = sb_find_get_block(inode->i_sb, start + i);
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ext4_forget(handle, 0, inode, bh, start + i);
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@ -1750,30 +1653,32 @@ static int ext4_remove_blocks(handle_t *handle, struct inode *inode,
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ext4_free_blocks(handle, inode, start, num);
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} else if (from == le32_to_cpu(ex->ee_block)
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&& to <= le32_to_cpu(ex->ee_block) + ee_len - 1) {
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printk("strange request: removal %lu-%lu from %u:%u\n",
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printk(KERN_INFO "strange request: removal %u-%u from %u:%u\n",
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from, to, le32_to_cpu(ex->ee_block), ee_len);
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} else {
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printk("strange request: removal(2) %lu-%lu from %u:%u\n",
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from, to, le32_to_cpu(ex->ee_block), ee_len);
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printk(KERN_INFO "strange request: removal(2) "
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"%u-%u from %u:%u\n",
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from, to, le32_to_cpu(ex->ee_block), ee_len);
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}
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return 0;
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}
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static int
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ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
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struct ext4_ext_path *path, unsigned long start)
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struct ext4_ext_path *path, ext4_lblk_t start)
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{
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int err = 0, correct_index = 0;
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int depth = ext_depth(inode), credits;
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struct ext4_extent_header *eh;
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unsigned a, b, block, num;
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unsigned long ex_ee_block;
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ext4_lblk_t a, b, block;
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unsigned num;
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ext4_lblk_t ex_ee_block;
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unsigned short ex_ee_len;
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unsigned uninitialized = 0;
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struct ext4_extent *ex;
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/* the header must be checked already in ext4_ext_remove_space() */
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ext_debug("truncate since %lu in leaf\n", start);
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ext_debug("truncate since %u in leaf\n", start);
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if (!path[depth].p_hdr)
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path[depth].p_hdr = ext_block_hdr(path[depth].p_bh);
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eh = path[depth].p_hdr;
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@ -1904,7 +1809,7 @@ ext4_ext_more_to_rm(struct ext4_ext_path *path)
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return 1;
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}
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int ext4_ext_remove_space(struct inode *inode, unsigned long start)
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int ext4_ext_remove_space(struct inode *inode, ext4_lblk_t start)
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{
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struct super_block *sb = inode->i_sb;
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int depth = ext_depth(inode);
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@ -1912,7 +1817,7 @@ int ext4_ext_remove_space(struct inode *inode, unsigned long start)
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handle_t *handle;
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int i = 0, err = 0;
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ext_debug("truncate since %lu\n", start);
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ext_debug("truncate since %u\n", start);
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/* probably first extent we're gonna free will be last in block */
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handle = ext4_journal_start(inode, depth + 1);
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@ -2094,17 +1999,19 @@ void ext4_ext_release(struct super_block *sb)
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* b> Splits in two extents: Write is happening at either end of the extent
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* c> Splits in three extents: Somone is writing in middle of the extent
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*/
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int ext4_ext_convert_to_initialized(handle_t *handle, struct inode *inode,
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struct ext4_ext_path *path,
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ext4_fsblk_t iblock,
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unsigned long max_blocks)
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static int ext4_ext_convert_to_initialized(handle_t *handle,
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struct inode *inode,
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struct ext4_ext_path *path,
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ext4_lblk_t iblock,
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unsigned long max_blocks)
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{
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struct ext4_extent *ex, newex;
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struct ext4_extent *ex1 = NULL;
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struct ext4_extent *ex2 = NULL;
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struct ext4_extent *ex3 = NULL;
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struct ext4_extent_header *eh;
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unsigned int allocated, ee_block, ee_len, depth;
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ext4_lblk_t ee_block;
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unsigned int allocated, ee_len, depth;
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||||
ext4_fsblk_t newblock;
|
||||
int err = 0;
|
||||
int ret = 0;
|
||||
@ -2226,7 +2133,7 @@ out:
|
||||
}
|
||||
|
||||
int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
|
||||
ext4_fsblk_t iblock,
|
||||
ext4_lblk_t iblock,
|
||||
unsigned long max_blocks, struct buffer_head *bh_result,
|
||||
int create, int extend_disksize)
|
||||
{
|
||||
@ -2238,8 +2145,9 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
|
||||
unsigned long allocated = 0;
|
||||
|
||||
__clear_bit(BH_New, &bh_result->b_state);
|
||||
ext_debug("blocks %d/%lu requested for inode %u\n", (int) iblock,
|
||||
max_blocks, (unsigned) inode->i_ino);
|
||||
ext_debug("blocks %lu/%lu requested for inode %u\n",
|
||||
(unsigned long) iblock, max_blocks,
|
||||
(unsigned) inode->i_ino);
|
||||
mutex_lock(&EXT4_I(inode)->truncate_mutex);
|
||||
|
||||
/* check in cache */
|
||||
@ -2288,7 +2196,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
|
||||
|
||||
ex = path[depth].p_ext;
|
||||
if (ex) {
|
||||
unsigned long ee_block = le32_to_cpu(ex->ee_block);
|
||||
ext4_lblk_t ee_block = le32_to_cpu(ex->ee_block);
|
||||
ext4_fsblk_t ee_start = ext_pblock(ex);
|
||||
unsigned short ee_len;
|
||||
|
||||
@ -2423,7 +2331,7 @@ void ext4_ext_truncate(struct inode * inode, struct page *page)
|
||||
{
|
||||
struct address_space *mapping = inode->i_mapping;
|
||||
struct super_block *sb = inode->i_sb;
|
||||
unsigned long last_block;
|
||||
ext4_lblk_t last_block;
|
||||
handle_t *handle;
|
||||
int err = 0;
|
||||
|
||||
@ -2516,7 +2424,8 @@ int ext4_ext_writepage_trans_blocks(struct inode *inode, int num)
|
||||
long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
|
||||
{
|
||||
handle_t *handle;
|
||||
ext4_fsblk_t block, max_blocks;
|
||||
ext4_lblk_t block;
|
||||
unsigned long max_blocks;
|
||||
ext4_fsblk_t nblocks = 0;
|
||||
int ret = 0;
|
||||
int ret2 = 0;
|
||||
@ -2561,8 +2470,9 @@ retry:
|
||||
if (!ret) {
|
||||
ext4_error(inode->i_sb, "ext4_fallocate",
|
||||
"ext4_ext_get_blocks returned 0! inode#%lu"
|
||||
", block=%llu, max_blocks=%llu",
|
||||
inode->i_ino, block, max_blocks);
|
||||
", block=%lu, max_blocks=%lu",
|
||||
inode->i_ino, (unsigned long)block,
|
||||
(unsigned long)max_blocks);
|
||||
ret = -EIO;
|
||||
ext4_mark_inode_dirty(handle, inode);
|
||||
ret2 = ext4_journal_stop(handle);
|
||||
|
||||
@ -105,7 +105,7 @@ int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
|
||||
*/
|
||||
static unsigned long blocks_for_truncate(struct inode *inode)
|
||||
{
|
||||
unsigned long needed;
|
||||
ext4_lblk_t needed;
|
||||
|
||||
needed = inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9);
|
||||
|
||||
@ -282,7 +282,8 @@ static int verify_chain(Indirect *from, Indirect *to)
|
||||
*/
|
||||
|
||||
static int ext4_block_to_path(struct inode *inode,
|
||||
long i_block, int offsets[4], int *boundary)
|
||||
ext4_lblk_t i_block,
|
||||
ext4_lblk_t offsets[4], int *boundary)
|
||||
{
|
||||
int ptrs = EXT4_ADDR_PER_BLOCK(inode->i_sb);
|
||||
int ptrs_bits = EXT4_ADDR_PER_BLOCK_BITS(inode->i_sb);
|
||||
@ -349,7 +350,8 @@ static int ext4_block_to_path(struct inode *inode,
|
||||
* or when it reads all @depth-1 indirect blocks successfully and finds
|
||||
* the whole chain, all way to the data (returns %NULL, *err == 0).
|
||||
*/
|
||||
static Indirect *ext4_get_branch(struct inode *inode, int depth, int *offsets,
|
||||
static Indirect *ext4_get_branch(struct inode *inode, int depth,
|
||||
ext4_lblk_t *offsets,
|
||||
Indirect chain[4], int *err)
|
||||
{
|
||||
struct super_block *sb = inode->i_sb;
|
||||
@ -445,7 +447,7 @@ static ext4_fsblk_t ext4_find_near(struct inode *inode, Indirect *ind)
|
||||
* stores it in *@goal and returns zero.
|
||||
*/
|
||||
|
||||
static ext4_fsblk_t ext4_find_goal(struct inode *inode, long block,
|
||||
static ext4_fsblk_t ext4_find_goal(struct inode *inode, ext4_lblk_t block,
|
||||
Indirect chain[4], Indirect *partial)
|
||||
{
|
||||
struct ext4_block_alloc_info *block_i;
|
||||
@ -590,7 +592,7 @@ failed_out:
|
||||
*/
|
||||
static int ext4_alloc_branch(handle_t *handle, struct inode *inode,
|
||||
int indirect_blks, int *blks, ext4_fsblk_t goal,
|
||||
int *offsets, Indirect *branch)
|
||||
ext4_lblk_t *offsets, Indirect *branch)
|
||||
{
|
||||
int blocksize = inode->i_sb->s_blocksize;
|
||||
int i, n = 0;
|
||||
@ -680,7 +682,7 @@ failed:
|
||||
* chain to new block and return 0.
|
||||
*/
|
||||
static int ext4_splice_branch(handle_t *handle, struct inode *inode,
|
||||
long block, Indirect *where, int num, int blks)
|
||||
ext4_lblk_t block, Indirect *where, int num, int blks)
|
||||
{
|
||||
int i;
|
||||
int err = 0;
|
||||
@ -784,12 +786,12 @@ err_out:
|
||||
* return < 0, error case.
|
||||
*/
|
||||
int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
|
||||
sector_t iblock, unsigned long maxblocks,
|
||||
ext4_lblk_t iblock, unsigned long maxblocks,
|
||||
struct buffer_head *bh_result,
|
||||
int create, int extend_disksize)
|
||||
{
|
||||
int err = -EIO;
|
||||
int offsets[4];
|
||||
ext4_lblk_t offsets[4];
|
||||
Indirect chain[4];
|
||||
Indirect *partial;
|
||||
ext4_fsblk_t goal;
|
||||
@ -803,7 +805,8 @@ int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
|
||||
|
||||
J_ASSERT(!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL));
|
||||
J_ASSERT(handle != NULL || create == 0);
|
||||
depth = ext4_block_to_path(inode,iblock,offsets,&blocks_to_boundary);
|
||||
depth = ext4_block_to_path(inode, iblock, offsets,
|
||||
&blocks_to_boundary);
|
||||
|
||||
if (depth == 0)
|
||||
goto out;
|
||||
@ -996,7 +999,7 @@ get_block:
|
||||
* `handle' can be NULL if create is zero
|
||||
*/
|
||||
struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode,
|
||||
long block, int create, int *errp)
|
||||
ext4_lblk_t block, int create, int *errp)
|
||||
{
|
||||
struct buffer_head dummy;
|
||||
int fatal = 0, err;
|
||||
@ -1063,7 +1066,7 @@ err:
|
||||
}
|
||||
|
||||
struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode,
|
||||
int block, int create, int *err)
|
||||
ext4_lblk_t block, int create, int *err)
|
||||
{
|
||||
struct buffer_head * bh;
|
||||
|
||||
@ -1828,7 +1831,8 @@ int ext4_block_truncate_page(handle_t *handle, struct page *page,
|
||||
{
|
||||
ext4_fsblk_t index = from >> PAGE_CACHE_SHIFT;
|
||||
unsigned offset = from & (PAGE_CACHE_SIZE-1);
|
||||
unsigned blocksize, iblock, length, pos;
|
||||
unsigned blocksize, length, pos;
|
||||
ext4_lblk_t iblock;
|
||||
struct inode *inode = mapping->host;
|
||||
struct buffer_head *bh;
|
||||
int err = 0;
|
||||
@ -1964,7 +1968,7 @@ static inline int all_zeroes(__le32 *p, __le32 *q)
|
||||
* (no partially truncated stuff there). */
|
||||
|
||||
static Indirect *ext4_find_shared(struct inode *inode, int depth,
|
||||
int offsets[4], Indirect chain[4], __le32 *top)
|
||||
ext4_lblk_t offsets[4], Indirect chain[4], __le32 *top)
|
||||
{
|
||||
Indirect *partial, *p;
|
||||
int k, err;
|
||||
@ -2289,12 +2293,12 @@ void ext4_truncate(struct inode *inode)
|
||||
__le32 *i_data = ei->i_data;
|
||||
int addr_per_block = EXT4_ADDR_PER_BLOCK(inode->i_sb);
|
||||
struct address_space *mapping = inode->i_mapping;
|
||||
int offsets[4];
|
||||
ext4_lblk_t offsets[4];
|
||||
Indirect chain[4];
|
||||
Indirect *partial;
|
||||
__le32 nr = 0;
|
||||
int n;
|
||||
long last_block;
|
||||
ext4_lblk_t last_block;
|
||||
unsigned blocksize = inode->i_sb->s_blocksize;
|
||||
struct page *page;
|
||||
|
||||
|
||||
@ -51,7 +51,7 @@
|
||||
|
||||
static struct buffer_head *ext4_append(handle_t *handle,
|
||||
struct inode *inode,
|
||||
u32 *block, int *err)
|
||||
ext4_lblk_t *block, int *err)
|
||||
{
|
||||
struct buffer_head *bh;
|
||||
|
||||
@ -144,8 +144,8 @@ struct dx_map_entry
|
||||
u16 size;
|
||||
};
|
||||
|
||||
static inline unsigned dx_get_block (struct dx_entry *entry);
|
||||
static void dx_set_block (struct dx_entry *entry, unsigned value);
|
||||
static inline ext4_lblk_t dx_get_block(struct dx_entry *entry);
|
||||
static void dx_set_block(struct dx_entry *entry, ext4_lblk_t value);
|
||||
static inline unsigned dx_get_hash (struct dx_entry *entry);
|
||||
static void dx_set_hash (struct dx_entry *entry, unsigned value);
|
||||
static unsigned dx_get_count (struct dx_entry *entries);
|
||||
@ -166,7 +166,8 @@ static void dx_sort_map(struct dx_map_entry *map, unsigned count);
|
||||
static struct ext4_dir_entry_2 *dx_move_dirents (char *from, char *to,
|
||||
struct dx_map_entry *offsets, int count);
|
||||
static struct ext4_dir_entry_2* dx_pack_dirents (char *base, int size);
|
||||
static void dx_insert_block (struct dx_frame *frame, u32 hash, u32 block);
|
||||
static void dx_insert_block(struct dx_frame *frame,
|
||||
u32 hash, ext4_lblk_t block);
|
||||
static int ext4_htree_next_block(struct inode *dir, __u32 hash,
|
||||
struct dx_frame *frame,
|
||||
struct dx_frame *frames,
|
||||
@ -181,12 +182,12 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
|
||||
* Mask them off for now.
|
||||
*/
|
||||
|
||||
static inline unsigned dx_get_block (struct dx_entry *entry)
|
||||
static inline ext4_lblk_t dx_get_block(struct dx_entry *entry)
|
||||
{
|
||||
return le32_to_cpu(entry->block) & 0x00ffffff;
|
||||
}
|
||||
|
||||
static inline void dx_set_block (struct dx_entry *entry, unsigned value)
|
||||
static inline void dx_set_block(struct dx_entry *entry, ext4_lblk_t value)
|
||||
{
|
||||
entry->block = cpu_to_le32(value);
|
||||
}
|
||||
@ -243,8 +244,8 @@ static void dx_show_index (char * label, struct dx_entry *entries)
|
||||
int i, n = dx_get_count (entries);
|
||||
printk("%s index ", label);
|
||||
for (i = 0; i < n; i++) {
|
||||
printk("%x->%u ", i? dx_get_hash(entries + i) :
|
||||
0, dx_get_block(entries + i));
|
||||
printk("%x->%lu ", i? dx_get_hash(entries + i) :
|
||||
0, (unsigned long)dx_get_block(entries + i));
|
||||
}
|
||||
printk("\n");
|
||||
}
|
||||
@ -297,7 +298,8 @@ struct stats dx_show_entries(struct dx_hash_info *hinfo, struct inode *dir,
|
||||
printk("%i indexed blocks...\n", count);
|
||||
for (i = 0; i < count; i++, entries++)
|
||||
{
|
||||
u32 block = dx_get_block(entries), hash = i? dx_get_hash(entries): 0;
|
||||
ext4_lblk_t block = dx_get_block(entries);
|
||||
ext4_lblk_t hash = i ? dx_get_hash(entries): 0;
|
||||
u32 range = i < count - 1? (dx_get_hash(entries + 1) - hash): ~hash;
|
||||
struct stats stats;
|
||||
printk("%s%3u:%03u hash %8x/%8x ",levels?"":" ", i, block, hash, range);
|
||||
@ -561,7 +563,7 @@ static inline struct ext4_dir_entry_2 *ext4_next_entry(struct ext4_dir_entry_2 *
|
||||
* into the tree. If there is an error it is returned in err.
|
||||
*/
|
||||
static int htree_dirblock_to_tree(struct file *dir_file,
|
||||
struct inode *dir, int block,
|
||||
struct inode *dir, ext4_lblk_t block,
|
||||
struct dx_hash_info *hinfo,
|
||||
__u32 start_hash, __u32 start_minor_hash)
|
||||
{
|
||||
@ -569,7 +571,8 @@ static int htree_dirblock_to_tree(struct file *dir_file,
|
||||
struct ext4_dir_entry_2 *de, *top;
|
||||
int err, count = 0;
|
||||
|
||||
dxtrace(printk("In htree dirblock_to_tree: block %d\n", block));
|
||||
dxtrace(printk(KERN_INFO "In htree dirblock_to_tree: block %lu\n",
|
||||
(unsigned long)block));
|
||||
if (!(bh = ext4_bread (NULL, dir, block, 0, &err)))
|
||||
return err;
|
||||
|
||||
@ -621,9 +624,9 @@ int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
|
||||
struct ext4_dir_entry_2 *de;
|
||||
struct dx_frame frames[2], *frame;
|
||||
struct inode *dir;
|
||||
int block, err;
|
||||
ext4_lblk_t block;
|
||||
int count = 0;
|
||||
int ret;
|
||||
int ret, err;
|
||||
__u32 hashval;
|
||||
|
||||
dxtrace(printk("In htree_fill_tree, start hash: %x:%x\n", start_hash,
|
||||
@ -753,7 +756,7 @@ static void dx_sort_map (struct dx_map_entry *map, unsigned count)
|
||||
} while(more);
|
||||
}
|
||||
|
||||
static void dx_insert_block(struct dx_frame *frame, u32 hash, u32 block)
|
||||
static void dx_insert_block(struct dx_frame *frame, u32 hash, ext4_lblk_t block)
|
||||
{
|
||||
struct dx_entry *entries = frame->entries;
|
||||
struct dx_entry *old = frame->at, *new = old + 1;
|
||||
@ -848,13 +851,14 @@ static struct buffer_head * ext4_find_entry (struct dentry *dentry,
|
||||
struct super_block * sb;
|
||||
struct buffer_head * bh_use[NAMEI_RA_SIZE];
|
||||
struct buffer_head * bh, *ret = NULL;
|
||||
unsigned long start, block, b;
|
||||
ext4_lblk_t start, block, b;
|
||||
int ra_max = 0; /* Number of bh's in the readahead
|
||||
buffer, bh_use[] */
|
||||
int ra_ptr = 0; /* Current index into readahead
|
||||
buffer */
|
||||
int num = 0;
|
||||
int nblocks, i, err;
|
||||
ext4_lblk_t nblocks;
|
||||
int i, err;
|
||||
struct inode *dir = dentry->d_parent->d_inode;
|
||||
int namelen;
|
||||
const u8 *name;
|
||||
@ -915,7 +919,8 @@ restart:
|
||||
if (!buffer_uptodate(bh)) {
|
||||
/* read error, skip block & hope for the best */
|
||||
ext4_error(sb, __FUNCTION__, "reading directory #%lu "
|
||||
"offset %lu", dir->i_ino, block);
|
||||
"offset %lu", dir->i_ino,
|
||||
(unsigned long)block);
|
||||
brelse(bh);
|
||||
goto next;
|
||||
}
|
||||
@ -962,7 +967,7 @@ static struct buffer_head * ext4_dx_find_entry(struct dentry *dentry,
|
||||
struct dx_frame frames[2], *frame;
|
||||
struct ext4_dir_entry_2 *de, *top;
|
||||
struct buffer_head *bh;
|
||||
unsigned long block;
|
||||
ext4_lblk_t block;
|
||||
int retval;
|
||||
int namelen = dentry->d_name.len;
|
||||
const u8 *name = dentry->d_name.name;
|
||||
@ -1174,7 +1179,7 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
|
||||
unsigned blocksize = dir->i_sb->s_blocksize;
|
||||
unsigned count, continued;
|
||||
struct buffer_head *bh2;
|
||||
u32 newblock;
|
||||
ext4_lblk_t newblock;
|
||||
u32 hash2;
|
||||
struct dx_map_entry *map;
|
||||
char *data1 = (*bh)->b_data, *data2;
|
||||
@ -1221,8 +1226,9 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
|
||||
split = count - move;
|
||||
hash2 = map[split].hash;
|
||||
continued = hash2 == map[split - 1].hash;
|
||||
dxtrace(printk("Split block %i at %x, %i/%i\n",
|
||||
dx_get_block(frame->at), hash2, split, count-split));
|
||||
dxtrace(printk(KERN_INFO "Split block %lu at %x, %i/%i\n",
|
||||
(unsigned long)dx_get_block(frame->at),
|
||||
hash2, split, count-split));
|
||||
|
||||
/* Fancy dance to stay within two buffers */
|
||||
de2 = dx_move_dirents(data1, data2, map + split, count - split);
|
||||
@ -1374,7 +1380,7 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
|
||||
int retval;
|
||||
unsigned blocksize;
|
||||
struct dx_hash_info hinfo;
|
||||
u32 block;
|
||||
ext4_lblk_t block;
|
||||
struct fake_dirent *fde;
|
||||
|
||||
blocksize = dir->i_sb->s_blocksize;
|
||||
@ -1455,7 +1461,7 @@ static int ext4_add_entry (handle_t *handle, struct dentry *dentry,
|
||||
int retval;
|
||||
int dx_fallback=0;
|
||||
unsigned blocksize;
|
||||
u32 block, blocks;
|
||||
ext4_lblk_t block, blocks;
|
||||
|
||||
sb = dir->i_sb;
|
||||
blocksize = sb->s_blocksize;
|
||||
@ -1532,7 +1538,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
|
||||
dx_get_count(entries), dx_get_limit(entries)));
|
||||
/* Need to split index? */
|
||||
if (dx_get_count(entries) == dx_get_limit(entries)) {
|
||||
u32 newblock;
|
||||
ext4_lblk_t newblock;
|
||||
unsigned icount = dx_get_count(entries);
|
||||
int levels = frame - frames;
|
||||
struct dx_entry *entries2;
|
||||
|
||||
@ -2914,7 +2914,7 @@ static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
|
||||
size_t len, loff_t off)
|
||||
{
|
||||
struct inode *inode = sb_dqopt(sb)->files[type];
|
||||
sector_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb);
|
||||
ext4_lblk_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb);
|
||||
int err = 0;
|
||||
int offset = off & (sb->s_blocksize - 1);
|
||||
int tocopy;
|
||||
@ -2952,7 +2952,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
|
||||
const char *data, size_t len, loff_t off)
|
||||
{
|
||||
struct inode *inode = sb_dqopt(sb)->files[type];
|
||||
sector_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb);
|
||||
ext4_lblk_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb);
|
||||
int err = 0;
|
||||
int offset = off & (sb->s_blocksize - 1);
|
||||
int tocopy;
|
||||
|
||||
@ -935,11 +935,14 @@ extern unsigned long ext4_count_free (struct buffer_head *, unsigned);
|
||||
/* inode.c */
|
||||
int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
|
||||
struct buffer_head *bh, ext4_fsblk_t blocknr);
|
||||
struct buffer_head * ext4_getblk (handle_t *, struct inode *, long, int, int *);
|
||||
struct buffer_head * ext4_bread (handle_t *, struct inode *, int, int, int *);
|
||||
struct buffer_head *ext4_getblk(handle_t *, struct inode *,
|
||||
ext4_lblk_t, int, int *);
|
||||
struct buffer_head *ext4_bread(handle_t *, struct inode *,
|
||||
ext4_lblk_t, int, int *);
|
||||
int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
|
||||
sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
|
||||
int create, int extend_disksize);
|
||||
ext4_lblk_t iblock, unsigned long maxblocks,
|
||||
struct buffer_head *bh_result,
|
||||
int create, int extend_disksize);
|
||||
|
||||
extern void ext4_read_inode (struct inode *);
|
||||
extern int ext4_write_inode (struct inode *, int);
|
||||
@ -1068,7 +1071,7 @@ extern const struct inode_operations ext4_fast_symlink_inode_operations;
|
||||
extern int ext4_ext_tree_init(handle_t *handle, struct inode *);
|
||||
extern int ext4_ext_writepage_trans_blocks(struct inode *, int);
|
||||
extern int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
|
||||
ext4_fsblk_t iblock,
|
||||
ext4_lblk_t iblock,
|
||||
unsigned long max_blocks, struct buffer_head *bh_result,
|
||||
int create, int extend_disksize);
|
||||
extern void ext4_ext_truncate(struct inode *, struct page *);
|
||||
@ -1081,11 +1084,17 @@ ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block,
|
||||
unsigned long max_blocks, struct buffer_head *bh,
|
||||
int create, int extend_disksize)
|
||||
{
|
||||
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
|
||||
return ext4_ext_get_blocks(handle, inode, block, max_blocks,
|
||||
bh, create, extend_disksize);
|
||||
return ext4_get_blocks_handle(handle, inode, block, max_blocks, bh,
|
||||
create, extend_disksize);
|
||||
int retval;
|
||||
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
|
||||
retval = ext4_ext_get_blocks(handle, inode,
|
||||
(ext4_lblk_t)block, max_blocks,
|
||||
bh, create, extend_disksize);
|
||||
} else {
|
||||
retval = ext4_get_blocks_handle(handle, inode,
|
||||
(ext4_lblk_t)block, max_blocks,
|
||||
bh, create, extend_disksize);
|
||||
}
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -124,20 +124,6 @@ struct ext4_ext_path {
|
||||
#define EXT4_EXT_CACHE_GAP 1
|
||||
#define EXT4_EXT_CACHE_EXTENT 2
|
||||
|
||||
/*
|
||||
* to be called by ext4_ext_walk_space()
|
||||
* negative retcode - error
|
||||
* positive retcode - signal for ext4_ext_walk_space(), see below
|
||||
* callback must return valid extent (passed or newly created)
|
||||
*/
|
||||
typedef int (*ext_prepare_callback)(struct inode *, struct ext4_ext_path *,
|
||||
struct ext4_ext_cache *,
|
||||
void *);
|
||||
|
||||
#define EXT_CONTINUE 0
|
||||
#define EXT_BREAK 1
|
||||
#define EXT_REPEAT 2
|
||||
|
||||
|
||||
#define EXT_MAX_BLOCK 0xffffffff
|
||||
|
||||
@ -233,8 +219,7 @@ extern int ext4_ext_try_to_merge(struct inode *inode,
|
||||
struct ext4_extent *);
|
||||
extern unsigned int ext4_ext_check_overlap(struct inode *, struct ext4_extent *, struct ext4_ext_path *);
|
||||
extern int ext4_ext_insert_extent(handle_t *, struct inode *, struct ext4_ext_path *, struct ext4_extent *);
|
||||
extern int ext4_ext_walk_space(struct inode *, unsigned long, unsigned long, ext_prepare_callback, void *);
|
||||
extern struct ext4_ext_path * ext4_ext_find_extent(struct inode *, int, struct ext4_ext_path *);
|
||||
|
||||
extern struct ext4_ext_path *ext4_ext_find_extent(struct inode *, ext4_lblk_t,
|
||||
struct ext4_ext_path *);
|
||||
#endif /* _LINUX_EXT4_EXTENTS */
|
||||
|
||||
|
||||
@ -27,6 +27,9 @@ typedef int ext4_grpblk_t;
|
||||
/* data type for filesystem-wide blocks number */
|
||||
typedef unsigned long long ext4_fsblk_t;
|
||||
|
||||
/* data type for file logical block number */
|
||||
typedef __u32 ext4_lblk_t;
|
||||
|
||||
struct ext4_reserve_window {
|
||||
ext4_fsblk_t _rsv_start; /* First byte reserved */
|
||||
ext4_fsblk_t _rsv_end; /* Last byte reserved or 0 */
|
||||
@ -48,7 +51,7 @@ struct ext4_block_alloc_info {
|
||||
* most-recently-allocated block in this file.
|
||||
* We use this for detecting linearly ascending allocation requests.
|
||||
*/
|
||||
__u32 last_alloc_logical_block;
|
||||
ext4_lblk_t last_alloc_logical_block;
|
||||
/*
|
||||
* Was i_next_alloc_goal in ext4_inode_info
|
||||
* is the *physical* companion to i_next_alloc_block.
|
||||
@ -67,7 +70,7 @@ struct ext4_block_alloc_info {
|
||||
*/
|
||||
struct ext4_ext_cache {
|
||||
ext4_fsblk_t ec_start;
|
||||
__u32 ec_block;
|
||||
ext4_lblk_t ec_block;
|
||||
__u32 ec_len; /* must be 32bit to return holes */
|
||||
__u32 ec_type;
|
||||
};
|
||||
@ -95,7 +98,7 @@ struct ext4_inode_info {
|
||||
/* block reservation info */
|
||||
struct ext4_block_alloc_info *i_block_alloc_info;
|
||||
|
||||
__u32 i_dir_start_lookup;
|
||||
ext4_lblk_t i_dir_start_lookup;
|
||||
#ifdef CONFIG_EXT4DEV_FS_XATTR
|
||||
/*
|
||||
* Extended attributes can be read independently of the main file
|
||||
|
||||
Loading…
Reference in New Issue
Block a user