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Restore shmid as inode# to fix /proc/pid/maps ABI breakage

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shmid used to be stored as inode# for shared memory segments. Some of
the proc-ps tools use this from /proc/pid/maps.  Recent cleanups
to newseg() changed it.  This patch sets inode number back to shared
memory id to fix breakage.

Signed-off-by: Badari Pulavarty <[email protected]>
Cc: "Albert Cahalan" <[email protected]>
Cc: "Eric W. Biederman" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Badari Pulavarty 2007-06-16 10:15:59 -07:00 • committed by Linus Torvalds
commit 30475cc12a
1 changed files with 5 additions and 0 deletions
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5
ipc/shm.c
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@ -397,6 +397,11 @@ static int newseg (struct ipc_namespace *ns, key_t key, int shmflg, size_t size)
shp->shm_nattch = 0;
shp->id = shm_buildid(ns, id, shp->shm_perm.seq);
shp->shm_file = file;
/*
* shmid gets reported as "inode#" in /proc/pid/maps.
* proc-ps tools use this. Changing this will break them.
*/
file->f_dentry->d_inode->i_ino = shp->id;
ns->shm_tot += numpages;
shm_unlock(shp);