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ovl: update doc 

Some of the documented quirks no longer apply.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
hifive-unleashed-5.1
Miklos Szeredi 2016-09-01 11:12:00 +02:00
parent 7cb35119d0
commit 026e5e0cc1
1 changed files with 3 additions and 5 deletions
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8
Documentation/filesystems/overlayfs.txt
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@ -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