diff options
Diffstat (limited to 'fs/proc/generic.c')
| -rw-r--r-- | fs/proc/generic.c | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 43c127490606..dd29f0337661 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -12,6 +12,7 @@ #include <linux/time.h> #include <linux/proc_fs.h> #include <linux/stat.h> +#include <linux/mm.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/mount.h> @@ -258,17 +259,22 @@ static int proc_notify_change(struct dentry *dentry, struct iattr *iattr) error = inode_change_ok(inode, iattr); if (error) - goto out; + return error; - error = inode_setattr(inode, iattr); - if (error) - goto out; + if ((iattr->ia_valid & ATTR_SIZE) && + iattr->ia_size != i_size_read(inode)) { + error = vmtruncate(inode, iattr->ia_size); + if (error) + return error; + } + + setattr_copy(inode, iattr); + mark_inode_dirty(inode); de->uid = inode->i_uid; de->gid = inode->i_gid; de->mode = inode->i_mode; -out: - return error; + return 0; } static int proc_getattr(struct vfsmount *mnt, struct dentry *dentry, @@ -343,21 +349,6 @@ static DEFINE_SPINLOCK(proc_inum_lock); /* protects the above */ /* * Return an inode number between PROC_DYNAMIC_FIRST and * 0xffffffff, or zero on failure. - * - * Current inode allocations in the proc-fs (hex-numbers): - * - * 00000000 reserved - * 00000001-00000fff static entries (goners) - * 001 root-ino - * - * 00001000-00001fff unused - * 0001xxxx-7fffxxxx pid-dir entries for pid 1-7fff - * 80000000-efffffff unused - * f0000000-ffffffff dynamic entries - * - * Goal: - * Once we split the thing into several virtual filesystems, - * we will get rid of magical ranges (and this comment, BTW). */ static unsigned int get_inode_number(void) { |
