ovl: make ovl_create_real() cope with vfs_mkdir() safely

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vfs_mkdir() may succeed and leave the dentry passed to it unhashed and
negative.  ovl_create_real() is the last caller breaking when that
happens.

[amir: split re-factoring of ovl_create_temp() to prep patch
       add comment about unhashed dir after mkdir
       add pr_warn() if mkdir succeeds and lookup fails]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

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Al Viro 2018-05-16 18:19:53 +03:00 • committed by Miklos Szeredi

parent 137ec526a2

commit f73cc77c3a

1 changed files with 33 additions and 1 deletions

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fs/overlayfs/dir.c

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