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| author | Christoph Hellwig <hch@lst.de> | 2010-06-04 11:30:04 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-08-09 16:47:39 -0400 |
| commit | 2c27c65ed0696f0b5df2dad2cf6462d72164d547 (patch) | |
| tree | 7d9036e3dea98938f7fd7074366ee73929e9b2e5 /mm/shmem.c | |
| parent | db78b877f7744bec4a9d9f9e7d10da3931d7cd39 (diff) | |
| download | linux-3.10-2c27c65ed0696f0b5df2dad2cf6462d72164d547.tar.gz linux-3.10-2c27c65ed0696f0b5df2dad2cf6462d72164d547.tar.bz2 linux-3.10-2c27c65ed0696f0b5df2dad2cf6462d72164d547.zip | |
check ATTR_SIZE contraints in inode_change_ok
Make sure we check the truncate constraints early on in ->setattr by adding
those checks to inode_change_ok. Also clean up and document inode_change_ok
to make this obvious.
As a fallout we don't have to call inode_newsize_ok from simple_setsize and
simplify it down to a truncate_setsize which doesn't return an error. This
simplifies a lot of setattr implementations and means we use truncate_setsize
almost everywhere. Get rid of fat_setsize now that it's trivial and mark
ext2_setsize static to make the calling convention obvious.
Keep the inode_newsize_ok in vmtruncate for now as all callers need an
audit for its removal anyway.
Note: setattr code in ecryptfs doesn't call inode_change_ok at all and
needs a deeper audit, but that is left for later.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm/shmem.c')
| -rw-r--r-- | mm/shmem.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 0a43505eeae..33222ba256f 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -805,11 +805,10 @@ static int shmem_notify_change(struct dentry *dentry, struct iattr *attr) } } - error = simple_setsize(inode, newsize); + /* XXX(truncate): truncate_setsize should be called last */ + truncate_setsize(inode, newsize); if (page) page_cache_release(page); - if (error) - return error; shmem_truncate_range(inode, newsize, (loff_t)-1); } |