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A few small fixes

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Merge tag 'jfs-6.6' of github.com:kleikamp/linux-shaggy

Pull jfs updates from Dave Kleikamp:
 "A few small fixes"

* tag 'jfs-6.6' of github.com:kleikamp/linux-shaggy:
  jfs: validate max amount of blocks before allocation.
  jfs: remove redundant initialization to pointer ip
  jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount
  FS: JFS: (trivial) Fix grammatical error in extAlloc
  fs/jfs: prevent double-free in dbUnmount() after failed jfs_remount()
This commit is contained in:
Linus Torvalds 2023-08-31 15:25:01 -07:00
commit 7e5cd6f697
4 changed files with 9 additions and 2 deletions
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1
fs/jfs/jfs_dmap.c
View File

@ -269,6 +269,7 @@ int dbUnmount(struct inode *ipbmap, int mounterror)
/* free the memory for the in-memory bmap. */
kfree(bmp);
JFS_SBI(ipbmap->i_sb)->bmap = NULL;
return (0);
}

7
fs/jfs/jfs_extent.c
View File

@ -166,7 +166,7 @@ extAlloc(struct inode *ip, s64 xlen, s64 pno, xad_t * xp, bool abnr)
/*
* COMMIT_SyncList flags an anonymous tlock on page that is on
* sync list.
* We need to commit the inode to get the page written disk.
* We need to commit the inode to get the page written to the disk.
*/
if (test_and_clear_cflag(COMMIT_Synclist,ip))
jfs_commit_inode(ip, 0);
@ -311,6 +311,11 @@ extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno)
* blocks in the map. in that case, we'll start off with the
* maximum free.
*/
/* give up if no space left */
if (bmp->db_maxfreebud == -1)
return -ENOSPC;
max = (s64) 1 << bmp->db_maxfreebud;
if (*nblocks >= max && *nblocks > nbperpage)
nb = nblks = (max > nbperpage) ? max : nbperpage;

1
fs/jfs/jfs_imap.c
View File

@ -193,6 +193,7 @@ int diUnmount(struct inode *ipimap, int mounterror)
* free in-memory control structure
*/
kfree(imap);
JFS_IP(ipimap)->i_imap = NULL;
return (0);
}

2
fs/jfs/namei.c
View File

@ -883,7 +883,7 @@ static int jfs_symlink(struct mnt_idmap *idmap, struct inode *dip,
struct component_name dname;
u32 ssize; /* source pathname size */
struct btstack btstack;
struct inode *ip = d_inode(dentry);
struct inode *ip;
s64 xlen = 0;
int bmask = 0, xsize;
s64 xaddr;