#include "rgrp.h"
#include "util.h"
#include "trans.h"
+#include "dir.h"
/**
- * ail_empty_gl - remove all buffers for a given lock from the AIL
+ * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
* @gl: the glock
*
* None of the buffers should be dirty, locked, or pinned.
*/
-static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
+static void __gfs2_ail_flush(struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
struct list_head *head = &gl->gl_ail_list;
struct gfs2_bufdata *bd;
struct buffer_head *bh;
- struct gfs2_trans tr;
-
- memset(&tr, 0, sizeof(tr));
- tr.tr_revokes = atomic_read(&gl->gl_ail_count);
-
- if (!tr.tr_revokes)
- return;
-
- /* A shortened, inline version of gfs2_trans_begin() */
- tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
- tr.tr_ip = (unsigned long)__builtin_return_address(0);
- INIT_LIST_HEAD(&tr.tr_list_buf);
- gfs2_log_reserve(sdp, tr.tr_reserved);
- BUG_ON(current->journal_info);
- current->journal_info = &tr;
spin_lock(&sdp->sd_ail_lock);
while (!list_empty(head)) {
bd_ail_gl_list);
bh = bd->bd_bh;
gfs2_remove_from_ail(bd);
- spin_unlock(&sdp->sd_ail_lock);
-
bd->bd_bh = NULL;
bh->b_private = NULL;
+ spin_unlock(&sdp->sd_ail_lock);
+
bd->bd_blkno = bh->b_blocknr;
gfs2_log_lock(sdp);
gfs2_assert_withdraw(sdp, !buffer_busy(bh));
}
gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
spin_unlock(&sdp->sd_ail_lock);
+}
+
+
+static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
+{
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ struct gfs2_trans tr;
+
+ memset(&tr, 0, sizeof(tr));
+ tr.tr_revokes = atomic_read(&gl->gl_ail_count);
+
+ if (!tr.tr_revokes)
+ return;
+
+ /* A shortened, inline version of gfs2_trans_begin() */
+ tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
+ tr.tr_ip = (unsigned long)__builtin_return_address(0);
+ INIT_LIST_HEAD(&tr.tr_list_buf);
+ gfs2_log_reserve(sdp, tr.tr_reserved);
+ BUG_ON(current->journal_info);
+ current->journal_info = &tr;
+
+ __gfs2_ail_flush(gl);
gfs2_trans_end(sdp);
gfs2_log_flush(sdp, NULL);
}
+void gfs2_ail_flush(struct gfs2_glock *gl)
+{
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ unsigned int revokes = atomic_read(&gl->gl_ail_count);
+ int ret;
+
+ if (!revokes)
+ return;
+
+ ret = gfs2_trans_begin(sdp, 0, revokes);
+ if (ret)
+ return;
+ __gfs2_ail_flush(gl);
+ gfs2_trans_end(sdp);
+ gfs2_log_flush(sdp, NULL);
+}
+
/**
* rgrp_go_sync - sync out the metadata for this glock
* @gl: the glock
if (ip) {
set_bit(GIF_INVALID, &ip->i_flags);
forget_all_cached_acls(&ip->i_inode);
+ gfs2_dir_hash_inval(ip);
}
}
- if (ip == GFS2_I(gl->gl_sbd->sd_rindex))
+ if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
+ gfs2_log_flush(gl->gl_sbd, NULL);
gl->gl_sbd->sd_rindex_uptodate = 0;
+ }
if (ip && S_ISREG(ip->i_inode.i_mode))
truncate_inode_pages(ip->i_inode.i_mapping, 0);
}
return 1;
}
+/**
+ * gfs2_set_nlink - Set the inode's link count based on on-disk info
+ * @inode: The inode in question
+ * @nlink: The link count
+ *
+ * If the link count has hit zero, it must never be raised, whatever the
+ * on-disk inode might say. When new struct inodes are created the link
+ * count is set to 1, so that we can safely use this test even when reading
+ * in on disk information for the first time.
+ */
+
+static void gfs2_set_nlink(struct inode *inode, u32 nlink)
+{
+ /*
+ * We will need to review setting the nlink count here in the
+ * light of the forthcoming ro bind mount work. This is a reminder
+ * to do that.
+ */
+ if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
+ if (nlink == 0)
+ clear_nlink(inode);
+ else
+ inode->i_nlink = nlink;
+ }
+}
+
+static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
+{
+ const struct gfs2_dinode *str = buf;
+ struct timespec atime;
+ u16 height, depth;
+
+ if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
+ goto corrupt;
+ ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
+ ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
+ ip->i_inode.i_rdev = 0;
+ switch (ip->i_inode.i_mode & S_IFMT) {
+ case S_IFBLK:
+ case S_IFCHR:
+ ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
+ be32_to_cpu(str->di_minor));
+ break;
+ };
+
+ ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
+ ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
+ gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
+ i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
+ gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
+ atime.tv_sec = be64_to_cpu(str->di_atime);
+ atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
+ if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
+ ip->i_inode.i_atime = atime;
+ ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
+ ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
+ ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
+ ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
+
+ ip->i_goal = be64_to_cpu(str->di_goal_meta);
+ ip->i_generation = be64_to_cpu(str->di_generation);
+
+ ip->i_diskflags = be32_to_cpu(str->di_flags);
+ ip->i_eattr = be64_to_cpu(str->di_eattr);
+ /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
+ gfs2_set_inode_flags(&ip->i_inode);
+ height = be16_to_cpu(str->di_height);
+ if (unlikely(height > GFS2_MAX_META_HEIGHT))
+ goto corrupt;
+ ip->i_height = (u8)height;
+
+ depth = be16_to_cpu(str->di_depth);
+ if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
+ goto corrupt;
+ ip->i_depth = (u8)depth;
+ ip->i_entries = be32_to_cpu(str->di_entries);
+
+ if (S_ISREG(ip->i_inode.i_mode))
+ gfs2_set_aops(&ip->i_inode);
+
+ return 0;
+corrupt:
+ gfs2_consist_inode(ip);
+ return -EIO;
+}
+
+/**
+ * gfs2_inode_refresh - Refresh the incore copy of the dinode
+ * @ip: The GFS2 inode
+ *
+ * Returns: errno
+ */
+
+int gfs2_inode_refresh(struct gfs2_inode *ip)
+{
+ struct buffer_head *dibh;
+ int error;
+
+ error = gfs2_meta_inode_buffer(ip, &dibh);
+ if (error)
+ return error;
+
+ if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
+ brelse(dibh);
+ return -EIO;
+ }
+
+ error = gfs2_dinode_in(ip, dibh->b_data);
+ brelse(dibh);
+ clear_bit(GIF_INVALID, &ip->i_flags);
+
+ return error;
+}
+
/**
* inode_go_lock - operation done after an inode lock is locked by a process
* @gl: the glock
.go_lock = inode_go_lock,
.go_dump = inode_go_dump,
.go_type = LM_TYPE_INODE,
- .go_min_hold_time = HZ / 5,
.go_flags = GLOF_ASPACE,
};
.go_unlock = rgrp_go_unlock,
.go_dump = gfs2_rgrp_dump,
.go_type = LM_TYPE_RGRP,
- .go_min_hold_time = HZ / 5,
.go_flags = GLOF_ASPACE,
};
git.openpandora.org / pandora-kernel.git / blobdiff