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ovl: update doc

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Some of the documented quirks no longer apply.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
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 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. 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 Any open files referring to this inode will access the old data.
metadata. Similarly any file locks obtained before copy_up will not
apply to the copied up file.
On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and Any file locks (and leases) obtained before copy_up will not apply
fsetxattr(2) will fail with EROFS. to the copied up file.
If a file with multiple hard links is copied up, then this will If a file with multiple hard links is copied up, then this will
"break" the link. Changes will not be propagated to other names "break" the link. Changes will not be propagated to other names