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authorDavid S. Miller <davem@davemloft.net>2011-01-24 16:17:06 -0500
committerDavid S. Miller <davem@davemloft.net>2011-01-24 16:17:06 -0500
commite92427b289d252cfbd4cb5282d92f4ce1a5bb1fb (patch)
tree6d30e5e7b7f8e9aaa51d43b7128ac56860fa03bb /fs/gfs2/inode.c
parentc506653d35249bb4738bb139c24362e1ae724bc1 (diff)
parentec30f343d61391ab23705e50a525da1d55395780 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'fs/gfs2/inode.c')
-rw-r--r--fs/gfs2/inode.c72
1 files changed, 22 insertions, 50 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 2232b3c780bd..7aa7d4f8984a 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -74,16 +74,14 @@ static struct inode *gfs2_iget(struct super_block *sb, u64 no_addr)
74} 74}
75 75
76/** 76/**
77 * GFS2 lookup code fills in vfs inode contents based on info obtained 77 * gfs2_set_iop - Sets inode operations
78 * from directory entry inside gfs2_inode_lookup(). This has caused issues 78 * @inode: The inode with correct i_mode filled in
79 * with NFS code path since its get_dentry routine doesn't have the relevant
80 * directory entry when gfs2_inode_lookup() is invoked. Part of the code
81 * segment inside gfs2_inode_lookup code needs to get moved around.
82 * 79 *
83 * Clears I_NEW as well. 80 * GFS2 lookup code fills in vfs inode contents based on info obtained
84 **/ 81 * from directory entry inside gfs2_inode_lookup().
82 */
85 83
86void gfs2_set_iop(struct inode *inode) 84static void gfs2_set_iop(struct inode *inode)
87{ 85{
88 struct gfs2_sbd *sdp = GFS2_SB(inode); 86 struct gfs2_sbd *sdp = GFS2_SB(inode);
89 umode_t mode = inode->i_mode; 87 umode_t mode = inode->i_mode;
@@ -106,8 +104,6 @@ void gfs2_set_iop(struct inode *inode)
106 inode->i_op = &gfs2_file_iops; 104 inode->i_op = &gfs2_file_iops;
107 init_special_inode(inode, inode->i_mode, inode->i_rdev); 105 init_special_inode(inode, inode->i_mode, inode->i_rdev);
108 } 106 }
109
110 unlock_new_inode(inode);
111} 107}
112 108
113/** 109/**
@@ -119,10 +115,8 @@ void gfs2_set_iop(struct inode *inode)
119 * Returns: A VFS inode, or an error 115 * Returns: A VFS inode, or an error
120 */ 116 */
121 117
122struct inode *gfs2_inode_lookup(struct super_block *sb, 118struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type,
123 unsigned int type, 119 u64 no_addr, u64 no_formal_ino)
124 u64 no_addr,
125 u64 no_formal_ino)
126{ 120{
127 struct inode *inode; 121 struct inode *inode;
128 struct gfs2_inode *ip; 122 struct gfs2_inode *ip;
@@ -152,51 +146,37 @@ struct inode *gfs2_inode_lookup(struct super_block *sb,
152 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); 146 error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh);
153 if (unlikely(error)) 147 if (unlikely(error))
154 goto fail_iopen; 148 goto fail_iopen;
155 ip->i_iopen_gh.gh_gl->gl_object = ip;
156 149
150 ip->i_iopen_gh.gh_gl->gl_object = ip;
157 gfs2_glock_put(io_gl); 151 gfs2_glock_put(io_gl);
158 io_gl = NULL; 152 io_gl = NULL;
159 153
160 if ((type == DT_UNKNOWN) && (no_formal_ino == 0))
161 goto gfs2_nfsbypass;
162
163 inode->i_mode = DT2IF(type);
164
165 /*
166 * We must read the inode in order to work out its type in
167 * this case. Note that this doesn't happen often as we normally
168 * know the type beforehand. This code path only occurs during
169 * unlinked inode recovery (where it is safe to do this glock,
170 * which is not true in the general case).
171 */
172 if (type == DT_UNKNOWN) { 154 if (type == DT_UNKNOWN) {
173 struct gfs2_holder gh; 155 /* Inode glock must be locked already */
174 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); 156 error = gfs2_inode_refresh(GFS2_I(inode));
175 if (unlikely(error)) 157 if (error)
176 goto fail_glock; 158 goto fail_refresh;
177 /* Inode is now uptodate */ 159 } else {
178 gfs2_glock_dq_uninit(&gh); 160 inode->i_mode = DT2IF(type);
179 } 161 }
180 162
181 gfs2_set_iop(inode); 163 gfs2_set_iop(inode);
164 unlock_new_inode(inode);
182 } 165 }
183 166
184gfs2_nfsbypass:
185 return inode; 167 return inode;
186fail_glock: 168
187 gfs2_glock_dq(&ip->i_iopen_gh); 169fail_refresh:
170 ip->i_iopen_gh.gh_gl->gl_object = NULL;
171 gfs2_glock_dq_uninit(&ip->i_iopen_gh);
188fail_iopen: 172fail_iopen:
189 if (io_gl) 173 if (io_gl)
190 gfs2_glock_put(io_gl); 174 gfs2_glock_put(io_gl);
191fail_put: 175fail_put:
192 if (inode->i_state & I_NEW) 176 ip->i_gl->gl_object = NULL;
193 ip->i_gl->gl_object = NULL;
194 gfs2_glock_put(ip->i_gl); 177 gfs2_glock_put(ip->i_gl);
195fail: 178fail:
196 if (inode->i_state & I_NEW) 179 iget_failed(inode);
197 iget_failed(inode);
198 else
199 iput(inode);
200 return ERR_PTR(error); 180 return ERR_PTR(error);
201} 181}
202 182
@@ -221,14 +201,6 @@ struct inode *gfs2_lookup_by_inum(struct gfs2_sbd *sdp, u64 no_addr,
221 if (IS_ERR(inode)) 201 if (IS_ERR(inode))
222 goto fail; 202 goto fail;
223 203
224 error = gfs2_inode_refresh(GFS2_I(inode));
225 if (error)
226 goto fail_iput;
227
228 /* Pick up the works we bypass in gfs2_inode_lookup */
229 if (inode->i_state & I_NEW)
230 gfs2_set_iop(inode);
231
232 /* Two extra checks for NFS only */ 204 /* Two extra checks for NFS only */
233 if (no_formal_ino) { 205 if (no_formal_ino) {
234 error = -ESTALE; 206 error = -ESTALE;