Commit 30475cc1 authored by Badari Pulavarty's avatar Badari Pulavarty Committed by Linus Torvalds
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Restore shmid as inode# to fix /proc/pid/maps ABI breakage

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: default avatarBadari Pulavarty <>
Cc: "Albert Cahalan" <>
Cc: "Eric W. Biederman" <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent dd08c40e
......@@ -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;
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