ext4: Convert BUG_ON checks to use ext4_error() instead
Convert a bunch of BUG_ONs to emit a ext4_error() message and return EIO. This is a first pass and most notably does _not_ cover mballoc.c, which is a morass of void functions. Signed-off-by: Frank Mayhar <fmayhar@google.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Frank Mayhar
Theodore Ts'o
Родитель
b7adc1f363
Коммит
273df556b6
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@ -53,6 +53,12 @@
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#define ext4_debug(f, a...) do {} while (0)
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#endif
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#define EXT4_ERROR_INODE(inode, fmt, a...) \
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ext4_error_inode(__func__, (inode), (fmt), ## a);
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#define EXT4_ERROR_FILE(file, fmt, a...) \
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ext4_error_file(__func__, (file), (fmt), ## a);
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/* data type for block offset of block group */
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typedef int ext4_grpblk_t;
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@ -1492,6 +1498,10 @@ extern int ext4_group_extend(struct super_block *sb,
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extern void __ext4_error(struct super_block *, const char *, const char *, ...)
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__attribute__ ((format (printf, 3, 4)));
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#define ext4_error(sb, message...) __ext4_error(sb, __func__, ## message)
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extern void ext4_error_inode(const char *, struct inode *, const char *, ...)
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__attribute__ ((format (printf, 3, 4)));
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extern void ext4_error_file(const char *, struct file *, const char *, ...)
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__attribute__ ((format (printf, 3, 4)));
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extern void __ext4_std_error(struct super_block *, const char *, int);
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extern void ext4_abort(struct super_block *, const char *, const char *, ...)
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__attribute__ ((format (printf, 3, 4)));
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@ -703,7 +703,12 @@ ext4_ext_find_extent(struct inode *inode, ext4_lblk_t block,
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}
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eh = ext_block_hdr(bh);
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ppos++;
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BUG_ON(ppos > depth);
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if (unlikely(ppos > depth)) {
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put_bh(bh);
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EXT4_ERROR_INODE(inode,
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"ppos %d > depth %d", ppos, depth);
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goto err;
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}
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path[ppos].p_bh = bh;
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path[ppos].p_hdr = eh;
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i--;
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@ -749,7 +754,12 @@ int ext4_ext_insert_index(handle_t *handle, struct inode *inode,
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if (err)
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return err;
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BUG_ON(logical == le32_to_cpu(curp->p_idx->ei_block));
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if (unlikely(logical == le32_to_cpu(curp->p_idx->ei_block))) {
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EXT4_ERROR_INODE(inode,
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"logical %d == ei_block %d!",
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logical, le32_to_cpu(curp->p_idx->ei_block));
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return -EIO;
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}
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len = EXT_MAX_INDEX(curp->p_hdr) - curp->p_idx;
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if (logical > le32_to_cpu(curp->p_idx->ei_block)) {
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/* insert after */
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@ -779,9 +789,17 @@ int ext4_ext_insert_index(handle_t *handle, struct inode *inode,
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ext4_idx_store_pblock(ix, ptr);
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le16_add_cpu(&curp->p_hdr->eh_entries, 1);
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BUG_ON(le16_to_cpu(curp->p_hdr->eh_entries)
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> le16_to_cpu(curp->p_hdr->eh_max));
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BUG_ON(ix > EXT_LAST_INDEX(curp->p_hdr));
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if (unlikely(le16_to_cpu(curp->p_hdr->eh_entries)
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> le16_to_cpu(curp->p_hdr->eh_max))) {
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EXT4_ERROR_INODE(inode,
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"logical %d == ei_block %d!",
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logical, le32_to_cpu(curp->p_idx->ei_block));
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return -EIO;
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}
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if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr))) {
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EXT4_ERROR_INODE(inode, "ix > EXT_LAST_INDEX!");
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return -EIO;
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}
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err = ext4_ext_dirty(handle, inode, curp);
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ext4_std_error(inode->i_sb, err);
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@ -819,7 +837,10 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
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/* if current leaf will be split, then we should use
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* border from split point */
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BUG_ON(path[depth].p_ext > EXT_MAX_EXTENT(path[depth].p_hdr));
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if (unlikely(path[depth].p_ext > EXT_MAX_EXTENT(path[depth].p_hdr))) {
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EXT4_ERROR_INODE(inode, "p_ext > EXT_MAX_EXTENT!");
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return -EIO;
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}
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if (path[depth].p_ext != EXT_MAX_EXTENT(path[depth].p_hdr)) {
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border = path[depth].p_ext[1].ee_block;
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ext_debug("leaf will be split."
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@ -860,7 +881,11 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
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/* initialize new leaf */
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newblock = ablocks[--a];
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BUG_ON(newblock == 0);
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if (unlikely(newblock == 0)) {
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EXT4_ERROR_INODE(inode, "newblock == 0!");
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err = -EIO;
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goto cleanup;
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}
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bh = sb_getblk(inode->i_sb, newblock);
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if (!bh) {
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err = -EIO;
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@ -880,7 +905,14 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
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ex = EXT_FIRST_EXTENT(neh);
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/* move remainder of path[depth] to the new leaf */
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BUG_ON(path[depth].p_hdr->eh_entries != path[depth].p_hdr->eh_max);
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if (unlikely(path[depth].p_hdr->eh_entries !=
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path[depth].p_hdr->eh_max)) {
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EXT4_ERROR_INODE(inode, "eh_entries %d != eh_max %d!",
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path[depth].p_hdr->eh_entries,
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path[depth].p_hdr->eh_max);
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err = -EIO;
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goto cleanup;
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}
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/* start copy from next extent */
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/* TODO: we could do it by single memmove */
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m = 0;
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@ -927,7 +959,11 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
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/* create intermediate indexes */
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k = depth - at - 1;
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BUG_ON(k < 0);
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if (unlikely(k < 0)) {
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EXT4_ERROR_INODE(inode, "k %d < 0!", k);
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err = -EIO;
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goto cleanup;
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}
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if (k)
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ext_debug("create %d intermediate indices\n", k);
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/* insert new index into current index block */
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@ -964,8 +1000,14 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
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ext_debug("cur 0x%p, last 0x%p\n", path[i].p_idx,
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EXT_MAX_INDEX(path[i].p_hdr));
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BUG_ON(EXT_MAX_INDEX(path[i].p_hdr) !=
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EXT_LAST_INDEX(path[i].p_hdr));
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if (unlikely(EXT_MAX_INDEX(path[i].p_hdr) !=
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EXT_LAST_INDEX(path[i].p_hdr))) {
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EXT4_ERROR_INODE(inode,
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"EXT_MAX_INDEX != EXT_LAST_INDEX ee_block %d!",
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le32_to_cpu(path[i].p_ext->ee_block));
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err = -EIO;
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goto cleanup;
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}
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while (path[i].p_idx <= EXT_MAX_INDEX(path[i].p_hdr)) {
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ext_debug("%d: move %d:%llu in new index %llu\n", i,
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le32_to_cpu(path[i].p_idx->ei_block),
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@ -1203,7 +1245,10 @@ ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
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struct ext4_extent *ex;
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int depth, ee_len;
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BUG_ON(path == NULL);
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if (unlikely(path == NULL)) {
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EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical);
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return -EIO;
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}
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depth = path->p_depth;
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*phys = 0;
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@ -1217,15 +1262,33 @@ ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
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ex = path[depth].p_ext;
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ee_len = ext4_ext_get_actual_len(ex);
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if (*logical < le32_to_cpu(ex->ee_block)) {
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BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex);
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if (unlikely(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex)) {
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EXT4_ERROR_INODE(inode,
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"EXT_FIRST_EXTENT != ex *logical %d ee_block %d!",
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*logical, le32_to_cpu(ex->ee_block));
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return -EIO;
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}
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while (--depth >= 0) {
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ix = path[depth].p_idx;
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BUG_ON(ix != EXT_FIRST_INDEX(path[depth].p_hdr));
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if (unlikely(ix != EXT_FIRST_INDEX(path[depth].p_hdr))) {
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EXT4_ERROR_INODE(inode,
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"ix (%d) != EXT_FIRST_INDEX (%d) (depth %d)!",
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ix != NULL ? ix->ei_block : 0,
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EXT_FIRST_INDEX(path[depth].p_hdr) != NULL ?
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EXT_FIRST_INDEX(path[depth].p_hdr)->ei_block : 0,
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depth);
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return -EIO;
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}
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}
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return 0;
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}
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BUG_ON(*logical < (le32_to_cpu(ex->ee_block) + ee_len));
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if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) {
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EXT4_ERROR_INODE(inode,
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"logical %d < ee_block %d + ee_len %d!",
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*logical, le32_to_cpu(ex->ee_block), ee_len);
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return -EIO;
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}
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*logical = le32_to_cpu(ex->ee_block) + ee_len - 1;
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*phys = ext_pblock(ex) + ee_len - 1;
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@ -1251,7 +1314,10 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
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int depth; /* Note, NOT eh_depth; depth from top of tree */
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int ee_len;
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BUG_ON(path == NULL);
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if (unlikely(path == NULL)) {
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EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical);
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return -EIO;
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}
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depth = path->p_depth;
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*phys = 0;
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@ -1265,17 +1331,32 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
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ex = path[depth].p_ext;
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ee_len = ext4_ext_get_actual_len(ex);
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if (*logical < le32_to_cpu(ex->ee_block)) {
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BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex);
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if (unlikely(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex)) {
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EXT4_ERROR_INODE(inode,
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"first_extent(path[%d].p_hdr) != ex",
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depth);
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return -EIO;
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}
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while (--depth >= 0) {
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ix = path[depth].p_idx;
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BUG_ON(ix != EXT_FIRST_INDEX(path[depth].p_hdr));
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if (unlikely(ix != EXT_FIRST_INDEX(path[depth].p_hdr))) {
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EXT4_ERROR_INODE(inode,
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"ix != EXT_FIRST_INDEX *logical %d!",
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*logical);
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return -EIO;
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}
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}
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*logical = le32_to_cpu(ex->ee_block);
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*phys = ext_pblock(ex);
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return 0;
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}
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BUG_ON(*logical < (le32_to_cpu(ex->ee_block) + ee_len));
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if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) {
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EXT4_ERROR_INODE(inode,
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"logical %d < ee_block %d + ee_len %d!",
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*logical, le32_to_cpu(ex->ee_block), ee_len);
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return -EIO;
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}
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if (ex != EXT_LAST_EXTENT(path[depth].p_hdr)) {
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/* next allocated block in this leaf */
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@ -1414,8 +1495,12 @@ static int ext4_ext_correct_indexes(handle_t *handle, struct inode *inode,
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eh = path[depth].p_hdr;
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ex = path[depth].p_ext;
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BUG_ON(ex == NULL);
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BUG_ON(eh == NULL);
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if (unlikely(ex == NULL || eh == NULL)) {
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EXT4_ERROR_INODE(inode,
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"ex %p == NULL or eh %p == NULL", ex, eh);
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return -EIO;
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}
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if (depth == 0) {
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/* there is no tree at all */
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@ -1613,10 +1698,16 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode,
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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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if (unlikely(ext4_ext_get_actual_len(newext) == 0)) {
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EXT4_ERROR_INODE(inode, "ext4_ext_get_actual_len(newext) == 0");
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return -EIO;
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}
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depth = ext_depth(inode);
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ex = path[depth].p_ext;
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BUG_ON(path[depth].p_hdr == NULL);
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if (unlikely(path[depth].p_hdr == NULL)) {
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EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
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return -EIO;
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}
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/* try to insert block into found extent and return */
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if (ex && !(flag & EXT4_GET_BLOCKS_PRE_IO)
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@ -1788,7 +1879,11 @@ int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
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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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if (unlikely(path[depth].p_hdr == NULL)) {
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EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
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err = -EIO;
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break;
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}
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ex = path[depth].p_ext;
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next = ext4_ext_next_allocated_block(path);
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@ -1839,7 +1934,11 @@ int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
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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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if (unlikely(cbex.ec_len == 0)) {
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EXT4_ERROR_INODE(inode, "cbex.ec_len == 0");
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err = -EIO;
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break;
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}
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err = func(inode, path, &cbex, ex, cbdata);
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ext4_ext_drop_refs(path);
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@ -1982,7 +2081,10 @@ static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode,
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/* free index block */
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path--;
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leaf = idx_pblock(path->p_idx);
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BUG_ON(path->p_hdr->eh_entries == 0);
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if (unlikely(path->p_hdr->eh_entries == 0)) {
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EXT4_ERROR_INODE(inode, "path->p_hdr->eh_entries == 0");
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return -EIO;
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}
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err = ext4_ext_get_access(handle, inode, path);
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if (err)
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return err;
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@ -2120,8 +2222,10 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
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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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BUG_ON(eh == NULL);
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if (unlikely(path[depth].p_hdr == NULL)) {
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EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
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return -EIO;
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}
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/* find where to start removing */
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ex = EXT_LAST_EXTENT(eh);
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@ -3240,10 +3344,10 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
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* this situation is possible, though, _during_ tree modification;
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* this is why assert can't be put in ext4_ext_find_extent()
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*/
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if (path[depth].p_ext == NULL && depth != 0) {
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ext4_error(inode->i_sb, "bad extent address "
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"inode: %lu, iblock: %d, depth: %d",
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inode->i_ino, iblock, depth);
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if (unlikely(path[depth].p_ext == NULL && depth != 0)) {
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EXT4_ERROR_INODE(inode, "bad extent address "
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"iblock: %d, depth: %d pblock %lld",
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iblock, depth, path[depth].p_block);
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err = -EIO;
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goto out2;
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}
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@ -3371,16 +3475,17 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
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}
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if (unlikely(EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL)) {
|
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if (eh->eh_entries) {
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last_ex = EXT_LAST_EXTENT(eh);
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if (iblock + ar.len > le32_to_cpu(last_ex->ee_block)
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+ ext4_ext_get_actual_len(last_ex))
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EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
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} else {
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WARN_ON(eh->eh_entries == 0);
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ext4_error(inode->i_sb, __func__,
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"inode#%lu, eh->eh_entries = 0!", inode->i_ino);
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}
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if (unlikely(!eh->eh_entries)) {
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EXT4_ERROR_INODE(inode,
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"eh->eh_entries == 0 ee_block %d",
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ex->ee_block);
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err = -EIO;
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goto out2;
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}
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last_ex = EXT_LAST_EXTENT(eh);
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if (iblock + ar.len > le32_to_cpu(last_ex->ee_block)
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+ ext4_ext_get_actual_len(last_ex))
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EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
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}
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err = ext4_ext_insert_extent(handle, inode, path, &newex, flags);
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if (err) {
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|
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|
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|
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@ -607,7 +607,14 @@ static int ext4_alloc_blocks(handle_t *handle, struct inode *inode,
|
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if (*err)
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goto failed_out;
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BUG_ON(current_block + count > EXT4_MAX_BLOCK_FILE_PHYS);
|
||||
if (unlikely(current_block + count > EXT4_MAX_BLOCK_FILE_PHYS)) {
|
||||
EXT4_ERROR_INODE(inode,
|
||||
"current_block %llu + count %lu > %d!",
|
||||
current_block, count,
|
||||
EXT4_MAX_BLOCK_FILE_PHYS);
|
||||
*err = -EIO;
|
||||
goto failed_out;
|
||||
}
|
||||
|
||||
target -= count;
|
||||
/* allocate blocks for indirect blocks */
|
||||
|
|
@ -643,7 +650,14 @@ static int ext4_alloc_blocks(handle_t *handle, struct inode *inode,
|
|||
ar.flags = EXT4_MB_HINT_DATA;
|
||||
|
||||
current_block = ext4_mb_new_blocks(handle, &ar, err);
|
||||
BUG_ON(current_block + ar.len > EXT4_MAX_BLOCK_FILE_PHYS);
|
||||
if (unlikely(current_block + ar.len > EXT4_MAX_BLOCK_FILE_PHYS)) {
|
||||
EXT4_ERROR_INODE(inode,
|
||||
"current_block %llu + ar.len %d > %d!",
|
||||
current_block, ar.len,
|
||||
EXT4_MAX_BLOCK_FILE_PHYS);
|
||||
*err = -EIO;
|
||||
goto failed_out;
|
||||
}
|
||||
|
||||
if (*err && (target == blks)) {
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -347,6 +347,42 @@ void __ext4_error(struct super_block *sb, const char *function,
|
|||
ext4_handle_error(sb);
|
||||
}
|
||||
|
||||
void ext4_error_inode(const char *function, struct inode *inode,
|
||||
const char *fmt, ...)
|
||||
{
|
||||
va_list args;
|
||||
|
||||
va_start(args, fmt);
|
||||
printk(KERN_CRIT "EXT4-fs error (device %s): %s: inode #%lu: (comm %s) ",
|
||||
inode->i_sb->s_id, function, inode->i_ino, current->comm);
|
||||
vprintk(fmt, args);
|
||||
printk("\n");
|
||||
va_end(args);
|
||||
|
||||
ext4_handle_error(inode->i_sb);
|
||||
}
|
||||
|
||||
void ext4_error_file(const char *function, struct file *file,
|
||||
const char *fmt, ...)
|
||||
{
|
||||
va_list args;
|
||||
struct inode *inode = file->f_dentry->d_inode;
|
||||
char pathname[80], *path;
|
||||
|
||||
va_start(args, fmt);
|
||||
path = d_path(&(file->f_path), pathname, sizeof(pathname));
|
||||
if (!path)
|
||||
path = "(unknown)";
|
||||
printk(KERN_CRIT
|
||||
"EXT4-fs error (device %s): %s: inode #%lu (comm %s path %s): ",
|
||||
inode->i_sb->s_id, function, inode->i_ino, current->comm, path);
|
||||
vprintk(fmt, args);
|
||||
printk("\n");
|
||||
va_end(args);
|
||||
|
||||
ext4_handle_error(inode->i_sb);
|
||||
}
|
||||
|
||||
static const char *ext4_decode_error(struct super_block *sb, int errno,
|
||||
char nbuf[16])
|
||||
{
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче