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linux/fs/pnode.h

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[PATCH] beginning of the shared-subtree proper A private mount does not forward or receive propagation. This patch provides user the ability to convert any mount to private. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:07 -05:00
vfs: new internal helper: mnt_has_parent(mnt) vfsmounts have ->mnt_parent pointing either to a different vfsmount or to itself; it's never NULL and termination condition in loops traversing the tree towards root is mnt == mnt->mnt_parent. At least one place (see the next patch) is confused about what's going on; let's add an explicit helper checking it right way and use it in all places where we need it. Not that there had been too many, but... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-23 19:26:23 -05:00
[PATCH] introduce shared mounts This creates shared mounts. A shared mount when bind-mounted to some mountpoint, propagates mount/umount events to each other. All the shared mounts that propagate events to each other belong to the same peer-group. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:33 -05:00
vfs: switch pnode.h macros to struct mount * Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-25 01:05:37 -05:00
[PATCH] introduce shared mounts This creates shared mounts. A shared mount when bind-mounted to some mountpoint, propagates mount/umount events to each other. All the shared mounts that propagate events to each other belong to the same peer-group. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:33 -05:00
[PATCH] shared mount handling: bind and rbind Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:50 -05:00
[PATCH] introduce slave mounts A slave mount always has a master mount from which it receives mount/umount events. Unlike shared mount the event propagation does not flow from the slave mount to the master. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:20:48 -05:00
[PATCH] shared mount handling: bind and rbind Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:50 -05:00
Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source() First of all, get_source() never results in CL_PROPAGATION alone. We either get CL_MAKE_SHARED (for the continuation of peer group) or CL_SLAVE (slave that is not shared) or both (beginning of peer group among slaves). Massage the code to make that explicit, kill CL_PROPAGATION test in clone_mnt() (nothing sets CL_MAKE_SHARED without CL_PROPAGATION and in clone_mnt() we are checking CL_PROPAGATION after we'd found that there's no CL_SLAVE, so the check for CL_MAKE_SHARED would do just as well). Fix comments, while we are at it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-01-16 13:28:47 -05:00
[PATCH] shared mount handling: bind and rbind Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:50 -05:00
vfs: spread struct mount - change_mnt_propagation/set_mnt_shared Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 20:43:10 -05:00
[PATCH] shared mount handling: bind and rbind Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:50 -05:00
vfs: spread struct mount - change_mnt_propagation/set_mnt_shared Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 20:43:10 -05:00
[PATCH] shared mount handling: bind and rbind Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:50 -05:00
vfs: spread struct mount - change_mnt_propagation/set_mnt_shared Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 20:43:10 -05:00
vfs: spread struct mount - propagate_mnt() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 23:59:29 -05:00
[PATCH] shared mount handling: bind and rbind Implement handling of MS_BIND in presense of shared mounts (see Documentation/sharedsubtree.txt in the end of patch series for detailed description). Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:50 -05:00
[PATCH] shared mounts handling: umount An unmount of a mount creates a umount event on the parent. If the parent is a shared mount, it gets propagated to all mounts in the peer group. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:20:17 -05:00
vfs: spread struct mount - do_umount/propagate_mount_busy Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 21:35:16 -05:00
vfs: spread struct mount - mount group id handling Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 19:54:23 -05:00
vfs: spread struct mount - get_dominating_id / do_make_slave next pile of horrors, similar to mnt_parent one; this time it's mnt_master. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 23:35:54 -05:00
vfs: spread struct mount - work with counters Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 22:37:54 -05:00
vfs: spread struct mount - remaining argument of mnt_set_mountpoint() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-25 00:01:17 -05:00
vfs: spread struct mount mnt_set_mountpoint child argument Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 21:28:22 -05:00
trim fs/internal.h some stuff in there can actually become static; some belongs to pnode.h as it's a private interface between namespace.c and pnode.c... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-21 21:15:42 -05:00
vfs: spread struct mount - umount_tree argument Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 21:07:43 -05:00
vfs: spread struct mount - clone_mnt/copy_tree argument Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 21:24:27 -05:00
vfs: spread struct mount - is_path_reachable Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-24 22:00:28 -05:00
vfs: more mnt_parent cleanups a) mount --move is checking that ->mnt_parent is non-NULL before looking if that parent happens to be shared; ->mnt_parent is never NULL and it's not even an misspelled !mnt_has_parent() b) pivot_root open-codes is_path_reachable(), poorly. c) so does path_is_under(), while we are at it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-23 19:34:49 -05:00
[PATCH] beginning of the shared-subtree proper A private mount does not forward or receive propagation. This patch provides user the ability to convert any mount to private. Signed-off-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 17:19:07 -05:00