diff options
| author |   Dave Hansen <haveblue@us.ibm.com> | 2008-02-15 14:37:34 -0800 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2008-04-19 00:25:33 -0400 |
| commit | 0622753b800e4cc6cb9319b36b27658c72dd7cdc (patch) | |
| tree | 5a32b65a087ff7fd5effa8d3f6f1f9717d4391aa /fs/nfsd/nfs4recover.c | |
| parent | [PATCH] r/o bind mounts: drop write during emergency remount (diff) | |
| download | linux-dev-0622753b800e4cc6cb9319b36b27658c72dd7cdc.tar.xz linux-dev-0622753b800e4cc6cb9319b36b27658c72dd7cdc.zip | |
[PATCH] r/o bind mounts: elevate write count for rmdir and unlink.
Elevate the write count during the vfs_rmdir() and vfs_unlink().
[AV: merged rmdir and unlink parts, added missing pieces in nfsd]
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfsd/nfs4recover.c')
| -rw-r--r-- | fs/nfsd/nfs4recover.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 1ff90625860f..4e77a1a3bd73 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -46,6 +46,7 @@ #include <linux/scatterlist.h> #include <linux/crypto.h> #include <linux/sched.h> +#include <linux/mount.h> #define NFSDDBG_FACILITY NFSDDBG_PROC @@ -313,12 +314,17 @@ nfsd4_remove_clid_dir(struct nfs4_client *clp) if (!rec_dir_init || !clp->cl_firststate) return; + status = mnt_want_write(rec_dir.path.mnt); + if (status) + goto out; clp->cl_firststate = 0; nfs4_save_user(&uid, &gid); status = nfsd4_unlink_clid_dir(clp->cl_recdir, HEXDIR_LEN-1); nfs4_reset_user(uid, gid); if (status == 0) nfsd4_sync_rec_dir(); + mnt_drop_write(rec_dir.path.mnt); +out: if (status) printk("NFSD: Failed to remove expired client state directory" " %.*s\n", HEXDIR_LEN, clp->cl_recdir); @@ -347,13 +353,17 @@ nfsd4_recdir_purge_old(void) { if (!rec_dir_init) return; + status = mnt_want_write(rec_dir.path.mnt); + if (status) + goto out; status = nfsd4_list_rec_dir(rec_dir.path.dentry, purge_old); if (status == 0) nfsd4_sync_rec_dir(); + mnt_drop_write(rec_dir.path.mnt); +out: if (status) printk("nfsd4: failed to purge old clients from recovery" " directory %s\n", rec_dir.path.dentry->d_name.name); - return; } static int |