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| author | Amir Goldstein <amir73il@gmail.com> | 2022-10-04 13:34:32 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2022-12-08 10:49:46 +0100 |
| commit | 8ea2876577b57805489e3044de7fcb0330c52f40 (patch) | |
| tree | 38eb0262d879d358a4a306884f1beddb63b2e72d /fs/overlayfs/namei.c | |
| parent | cdf5c9d1af411057e33cfbeba02ce19478dedb1e (diff) | |
| download | linux-8ea2876577b57805489e3044de7fcb0330c52f40.tar.bz2 | |
ovl: do not reconnect upper index records in ovl_indexdir_cleanup()
ovl_indexdir_cleanup() is called on mount of overayfs with nfs_export
feature to cleanup stale index records for lower and upper files that have
been deleted while overlayfs was offline.
This has the side effect (good or bad) of pre populating inode cache with
all the copied up upper inodes, while verifying the index entries.
For copied up directories, the upper file handles are decoded to conncted
upper dentries. This has the even bigger side effect of reading the
content of all the parent upper directories which may take significantly
more time and IO than just reading the upper inodes.
Do not request connceted upper dentries for verifying upper directory index
entries, because we have no use for the connected dentry.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/namei.c')
| -rw-r--r-- | fs/overlayfs/namei.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index 0fd1d5fdfc72..0ce1f9b3a046 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -487,7 +487,8 @@ fail: } /* Get upper dentry from index */ -struct dentry *ovl_index_upper(struct ovl_fs *ofs, struct dentry *index) +struct dentry *ovl_index_upper(struct ovl_fs *ofs, struct dentry *index, + bool connected) { struct ovl_fh *fh; struct dentry *upper; @@ -499,7 +500,7 @@ struct dentry *ovl_index_upper(struct ovl_fs *ofs, struct dentry *index) if (IS_ERR_OR_NULL(fh)) return ERR_CAST(fh); - upper = ovl_decode_real_fh(ofs, fh, ovl_upper_mnt(ofs), true); + upper = ovl_decode_real_fh(ofs, fh, ovl_upper_mnt(ofs), connected); kfree(fh); if (IS_ERR_OR_NULL(upper)) @@ -572,7 +573,7 @@ int ovl_verify_index(struct ovl_fs *ofs, struct dentry *index) * directly from the index dentry, but for dir index we first need to * decode the upper directory. */ - upper = ovl_index_upper(ofs, index); + upper = ovl_index_upper(ofs, index, false); if (IS_ERR_OR_NULL(upper)) { err = PTR_ERR(upper); /* |