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jfs: replace hardcoded magic number with DTPAGEMAXSLOT constant

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Replace hardcoded value 127 with DTPAGEMAXSLOT constant in boundary
checks within jfs_readdir() and dtReadFirst(). This improves code
maintainability and ensures consistency with the defined maximum
slot value.

Signed-off-by: Zheng Yu <zheng.yu@northwestern.edu>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
This commit is contained in:
Zheng Yu
2025-07-29 18:28:56 +00:00
committed by Dave Kleikamp
parent e551cc21bb
commit cafc667982
1 changed files with 2 additions and 2 deletions
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4
fs/jfs/jfs_dtree.c
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@@ -2903,7 +2903,7 @@ int jfs_readdir(struct file *file, struct dir_context *ctx)
stbl = DT_GETSTBL(p);
for (i = index; i < p->header.nextindex; i++) {
if (stbl[i] < 0 || stbl[i] > 127) {
if (stbl[i] < 0 || stbl[i] >= DTPAGEMAXSLOT) {
jfs_err("JFS: Invalid stbl[%d] = %d for inode %ld, block = %lld",
i, stbl[i], (long)ip->i_ino, (long long)bn);
free_page(dirent_buf);
@@ -3108,7 +3108,7 @@ static int dtReadFirst(struct inode *ip, struct btstack * btstack)
/* get the leftmost entry */
stbl = DT_GETSTBL(p);
if (stbl[0] < 0 || stbl[0] > 127) {
if (stbl[0] < 0 || stbl[0] >= DTPAGEMAXSLOT) {
DT_PUTPAGE(mp);
jfs_error(ip->i_sb, "stbl[0] out of bound\n");
return -EIO;