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Make the anon_inodes facility unconditional so that it can be used by core
VFS code.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
(cherry picked from commit dadd2299ab61fc2b55b95b7b3a8f674cdd3b69c9)
Bug: 135608568
Test: test program using syscall(__NR_sys_pidfd_open,..) and poll()
Change-Id: I2f97bda4f360d8d05bbb603de839717b3d8067ae
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
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Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Signed-off-by: Michael Witten <mfwitten@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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fanotify has default to y in linux-next since it's inception but default to
n in the final push to Linus.
Signed-off-by: Eric Paris <eparis@redhat.com>
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This is the backend work needed for fanotify to support the new
FS_OPEN_PERM and FS_ACCESS_PERM fsnotify events. This is done using the
new fsnotify secondary queue. No userspace interface is provided actually
respond to or request these events.
Signed-off-by: Eric Paris <eparis@redhat.com>
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fanotify references anon_inode_getfd(), which is only available with
ANON_INODES enabled. Presently this bails out with the following:
LD vmlinux
fs/built-in.o: In function `sys_fanotify_init':
(.text+0x26d1c): undefined reference to `anon_inode_getfd'
make: *** [vmlinux] Error 1
which is trivially corrected by adding an ANON_INODES select.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Eric Paris <eparis@redhat.com>
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fanotify is a novel file notification system which bases notification on
giving userspace both an event type (open, close, read, write) and an open
file descriptor to the object in question. This should address a number of
races and problems with other notification systems like inotify and dnotify
and should allow the future implementation of blocking or access controlled
notification. These are useful for on access scanners or hierachical storage
management schemes.
This patch just implements the basics of the fsnotify functions.
Signed-off-by: Eric Paris <eparis@redhat.com>
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