diff options
| author | Oleg Kanatov <okanatov@gmail.com> | 2022-10-28 15:22:54 +0300 |
|---|---|---|
| committer | Dave Kleikamp <dave.kleikamp@oracle.com> | 2022-11-11 00:22:23 +0300 |
| commit | a60dca73a1a8079d867b2c2e9549440346c1ba83 (patch) | |
| tree | 0dd5dbe6120024a988fd4b08217b57ae05b3f2c8 /fs/afs/dir_silly.c | |
| parent | d0e482c45c50117bfb568825a41f0693e5f33c0f (diff) | |
| download | linux-a60dca73a1a8079d867b2c2e9549440346c1ba83.tar.xz | |
jfs: makes diUnmount/diMount in jfs_mount_rw atomic
jfs_mount_rw can call diUnmount and then diMount. These calls change the
imap pointer. Between these two calls there may be calls of function
jfs_lookup(). The jfs_lookup() function calls jfs_iget(), which, in turn
calls diRead(). The latter references the imap pointer. That may cause
diRead() to refer to a pointer freed in diUnmount(). This commit makes
the calls to diUnmount()/diMount() atomic so that nothing will read the
imap pointer until the whole remount is completed.
Signed-off-by: Oleg Kanatov <okanatov@gmail.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Diffstat (limited to 'fs/afs/dir_silly.c')
0 files changed, 0 insertions, 0 deletions