The patch titled
Subject: procfs: add ability to plug in auxiliary fdinfo providers
has been removed from the -mm tree. Its filename was
procfs-add-ability-to-plug-in-auxiliary-fdinfo-providers.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Subject: procfs: add ability to plug in auxiliary fdinfo providers
This patch brings ability to print out auxiliary data associated
with file in procfs interface /proc/pid/fdinfo/fd.
In particular further patches make eventfd, evenpoll, signalfd
and fsnotify to print additional information complete enough
to restore these objects after checkpoint.
To simplify the code we add show_fdinfo callback inside
struct file_operations (as Al and Pavel are proposing).
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Acked-by: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Andrey Vagin <avagin@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: James Bottomley <jbottomley@xxxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Matthew Helsley <matt.helsley@xxxxxxxxx>
Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/fd.c | 2 ++
include/linux/fs.h | 4 ++--
2 files changed, 4 insertions(+), 2 deletions(-)
diff -puN fs/proc/fd.c~procfs-add-ability-to-plug-in-auxiliary-fdinfo-providers fs/proc/fd.c
--- a/fs/proc/fd.c~procfs-add-ability-to-plug-in-auxiliary-fdinfo-providers
+++ a/fs/proc/fd.c
@@ -50,6 +50,8 @@ static int seq_show(struct seq_file *m,
if (!ret) {
seq_printf(m, "pos:\t%lli\nflags:\t0%o\n",
(long long)file->f_pos, f_flags);
+ if (file->f_op->show_fdinfo)
+ ret = file->f_op->show_fdinfo(m, file);
fput(file);
}
diff -puN include/linux/fs.h~procfs-add-ability-to-plug-in-auxiliary-fdinfo-providers include/linux/fs.h
--- a/include/linux/fs.h~procfs-add-ability-to-plug-in-auxiliary-fdinfo-providers
+++ a/include/linux/fs.h
@@ -44,6 +44,7 @@ struct vm_area_struct;
struct vfsmount;
struct cred;
struct swap_info_struct;
+struct seq_file;
extern void __init inode_init(void);
extern void __init inode_init_early(void);
@@ -1543,6 +1544,7 @@ struct file_operations {
int (*setlease)(struct file *, long, struct file_lock **);
long (*fallocate)(struct file *file, int mode, loff_t offset,
loff_t len);
+ int (*show_fdinfo)(struct seq_file *m, struct file *f);
};
struct inode_operations {
@@ -1578,8 +1580,6 @@ struct inode_operations {
umode_t create_mode, int *opened);
} ____cacheline_aligned;
-struct seq_file;
-
ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
unsigned long nr_segs, unsigned long fast_segs,
struct iovec *fast_pointer,
_
Patches currently in -mm which might be from gorcunov@xxxxxxxxxx are
origin.patch
linux-next.patch
fs-notify-add-procfs-fdinfo-helper-v7-fix.patch
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