From 998db52c03cd293d16a457f1b396cea932244147 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Sat, 7 Aug 2010 09:21:41 -0400 Subject: [PATCH] nfsd4: fix file open accounting for RDWR opens Commit f9d7562fdb9dc0ada3a7aba5dbbe9d965e2a105d "nfsd4: share file descriptors between stateid's" didn't correctly account for O_RDWR opens. Symptoms include leaked files, resulting in failures to unmount and/or warnings about orphaned inodes on reboot. Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4state.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 0b4351f8238a..0a024917f052 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -162,13 +162,22 @@ static struct list_head ownerstr_hashtbl[OWNER_HASH_SIZE]; static struct list_head file_hashtbl[FILE_HASH_SIZE]; static struct list_head stateid_hashtbl[STATEID_HASH_SIZE]; -static inline void nfs4_file_get_access(struct nfs4_file *fp, int oflag) +static void __nfs4_file_get_access(struct nfs4_file *fp, int oflag) { BUG_ON(!(fp->fi_fds[oflag] || fp->fi_fds[O_RDWR])); atomic_inc(&fp->fi_access[oflag]); } -static inline void nfs4_file_put_fd(struct nfs4_file *fp, int oflag) +static void nfs4_file_get_access(struct nfs4_file *fp, int oflag) +{ + if (oflag == O_RDWR) { + __nfs4_file_get_access(fp, O_RDONLY); + __nfs4_file_get_access(fp, O_WRONLY); + } else + __nfs4_file_get_access(fp, oflag); +} + +static void nfs4_file_put_fd(struct nfs4_file *fp, int oflag) { if (fp->fi_fds[oflag]) { fput(fp->fi_fds[oflag]); @@ -176,7 +185,7 @@ static inline void nfs4_file_put_fd(struct nfs4_file *fp, int oflag) } } -static inline void nfs4_file_put_access(struct nfs4_file *fp, int oflag) +static void __nfs4_file_put_access(struct nfs4_file *fp, int oflag) { if (atomic_dec_and_test(&fp->fi_access[oflag])) { nfs4_file_put_fd(fp, O_RDWR); @@ -184,6 +193,15 @@ static inline void nfs4_file_put_access(struct nfs4_file *fp, int oflag) } } +static void nfs4_file_put_access(struct nfs4_file *fp, int oflag) +{ + if (oflag == O_RDWR) { + __nfs4_file_put_access(fp, O_RDONLY); + __nfs4_file_put_access(fp, O_WRONLY); + } else + __nfs4_file_put_access(fp, oflag); +} + static struct nfs4_delegation * alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_fh *current_fh, u32 type) { -- 2.20.1