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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-09-02 19:32:15 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-09-02 19:32:15 +0300 |
| commit | f28929ba36b7b35feffd3f282ba17fbc0c4cc83e (patch) | |
| tree | 0fff1d846975b8cc5d59dd1ef314f46d5dba4b1e /Documentation | |
| parent | ac8103840b7bf9cca48b437fd5a8cb8b14b6bd02 (diff) | |
| parent | 026e5e0cc12474495515275d9c176ef823238c70 (diff) | |
| download | linux-f28929ba36b7b35feffd3f282ba17fbc0c4cc83e.tar.xz | |
Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"Most of this is regression fixes for posix acl behavior introduced in
4.8-rc1 (these were caught by the pjd-fstest suite). The are also
miscellaneous fixes marked as stable material and cleanups.
Other than overlayfs code, it touches <linux/fs.h> to add a constant
with which to disable posix acl caching. No changes needed to the
actual caching code, it automatically does the right thing, although
later we may want to optimize this case.
I'm now testing overlayfs with the following test suites to catch
regressions:
- unionmount-testsuite
- xfstests
- pjd-fstest"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: update doc
ovl: listxattr: use strnlen()
ovl: Switch to generic_getxattr
ovl: copyattr after setting POSIX ACL
ovl: Switch to generic_removexattr
ovl: Get rid of ovl_xattr_noacl_handlers array
ovl: Fix OVL_XATTR_PREFIX
ovl: fix spelling mistake: "directries" -> "directories"
ovl: don't cache acl on overlay layer
ovl: use cached acl on underlying layer
ovl: proper cleanup of workdir
ovl: remove posix_acl_default from workdir
ovl: handle umask and posix_acl_default correctly on creation
ovl: don't copy up opaqueness
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/overlayfs.txt | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/Documentation/filesystems/overlayfs.txt b/Documentation/filesystems/overlayfs.txt index d6259c786316..bcbf9710e4af 100644 --- a/Documentation/filesystems/overlayfs.txt +++ b/Documentation/filesystems/overlayfs.txt @@ -183,12 +183,10 @@ The copy_up operation essentially creates a new, identical file and moves it over to the old name. The new file may be on a different filesystem, so both st_dev and st_ino of the file may change. -Any open files referring to this inode will access the old data and -metadata. Similarly any file locks obtained before copy_up will not -apply to the copied up file. +Any open files referring to this inode will access the old data. -On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and -fsetxattr(2) will fail with EROFS. +Any file locks (and leases) obtained before copy_up will not apply +to the copied up file. If a file with multiple hard links is copied up, then this will "break" the link. Changes will not be propagated to other names |