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| author | NeilBrown <neilb@suse.de> | 2022-07-26 16:45:30 +1000 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-08-04 10:28:19 -0400 |
| commit | e18bcb33bc5b69bccc2b532075aa00bb49cc01c5 (patch) | |
| tree | cf15377f71f537048e4ec2b6099f087479fc9b6d /fs/nfsd | |
| parent | b677c0c63a135a916493c064906582e9f3ed4802 (diff) | |
| download | linux-e18bcb33bc5b69bccc2b532075aa00bb49cc01c5.tar.gz | |
NFSD: only call fh_unlock() once in nfsd_link()
On non-error paths, nfsd_link() calls fh_unlock() twice. This is safe because fh_unlock() records that the unlock has been done and doesn't repeat it. However it makes the code a little confusing and interferes with changes that are planned for directory locking. So rearrange the code to ensure fh_unlock() is called exactly once if fh_lock() was called. Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/vfs.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 00b0b80c0c44..cce4130e7008 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1541,9 +1541,10 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, dirp = d_inode(ddir); dnew = lookup_one_len(name, ddir, len); - host_err = PTR_ERR(dnew); - if (IS_ERR(dnew)) - goto out_nfserr; + if (IS_ERR(dnew)) { + err = nfserrno(PTR_ERR(dnew)); + goto out_unlock; + } dold = tfhp->fh_dentry; @@ -1562,17 +1563,17 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, else err = nfserrno(host_err); } -out_dput: dput(dnew); -out_unlock: - fh_unlock(ffhp); +out_drop_write: fh_drop_write(tfhp); out: return err; -out_nfserr: - err = nfserrno(host_err); - goto out_unlock; +out_dput: + dput(dnew); +out_unlock: + fh_unlock(ffhp); + goto out_drop_write; } static void |