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authorSteve French <sfrench@us.ibm.com>2007-02-07 00:30:38 +0000
committerSteve French <sfrench@us.ibm.com>2007-02-07 00:30:38 +0000
commit1d9564ea0ac72ef7c4068d66fe42ad23af4ff53f (patch)
treefa63b4c1bbd775252f71d05fef4de6a904eb4448 /fs
parent87f440e70e07dace7db130f2f9fcea3f132aad8f (diff)
parentdda2ac15d23b38e4335e858848aa8c9a6710304f (diff)
downloadblackbird-op-linux-1d9564ea0ac72ef7c4068d66fe42ad23af4ff53f.tar.gz
blackbird-op-linux-1d9564ea0ac72ef7c4068d66fe42ad23af4ff53f.zip
Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'fs')
-rw-r--r--fs/aio.c20
-rw-r--r--fs/block_dev.c41
-rw-r--r--fs/nfsd/nfsfh.c2
-rw-r--r--fs/ocfs2/journal.h4
-rw-r--r--fs/proc/base.c12
5 files changed, 64 insertions, 15 deletions
diff --git a/fs/aio.c b/fs/aio.c
index ee20fc4240e0..55991e4132a7 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -298,17 +298,23 @@ static void wait_for_all_aios(struct kioctx *ctx)
struct task_struct *tsk = current;
DECLARE_WAITQUEUE(wait, tsk);
+ spin_lock_irq(&ctx->ctx_lock);
if (!ctx->reqs_active)
- return;
+ goto out;
add_wait_queue(&ctx->wait, &wait);
set_task_state(tsk, TASK_UNINTERRUPTIBLE);
while (ctx->reqs_active) {
+ spin_unlock_irq(&ctx->ctx_lock);
schedule();
set_task_state(tsk, TASK_UNINTERRUPTIBLE);
+ spin_lock_irq(&ctx->ctx_lock);
}
__set_task_state(tsk, TASK_RUNNING);
remove_wait_queue(&ctx->wait, &wait);
+
+out:
+ spin_unlock_irq(&ctx->ctx_lock);
}
/* wait_on_sync_kiocb:
@@ -424,7 +430,6 @@ static struct kiocb fastcall *__aio_get_req(struct kioctx *ctx)
ring = kmap_atomic(ctx->ring_info.ring_pages[0], KM_USER0);
if (ctx->reqs_active < aio_ring_avail(&ctx->ring_info, ring)) {
list_add(&req->ki_list, &ctx->active_reqs);
- get_ioctx(ctx);
ctx->reqs_active++;
okay = 1;
}
@@ -536,8 +541,6 @@ int fastcall aio_put_req(struct kiocb *req)
spin_lock_irq(&ctx->ctx_lock);
ret = __aio_put_req(ctx, req);
spin_unlock_irq(&ctx->ctx_lock);
- if (ret)
- put_ioctx(ctx);
return ret;
}
@@ -779,8 +782,7 @@ static int __aio_run_iocbs(struct kioctx *ctx)
*/
iocb->ki_users++; /* grab extra reference */
aio_run_iocb(iocb);
- if (__aio_put_req(ctx, iocb)) /* drop extra ref */
- put_ioctx(ctx);
+ __aio_put_req(ctx, iocb);
}
if (!list_empty(&ctx->run_list))
return 1;
@@ -997,14 +999,10 @@ put_rq:
/* everything turned out well, dispose of the aiocb. */
ret = __aio_put_req(ctx, iocb);
- spin_unlock_irqrestore(&ctx->ctx_lock, flags);
-
if (waitqueue_active(&ctx->wait))
wake_up(&ctx->wait);
- if (ret)
- put_ioctx(ctx);
-
+ spin_unlock_irqrestore(&ctx->ctx_lock, flags);
return ret;
}
diff --git a/fs/block_dev.c b/fs/block_dev.c
index d9bdf2b3ade2..fc7028b685f2 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -129,6 +129,46 @@ blkdev_get_block(struct inode *inode, sector_t iblock,
return 0;
}
+static int
+blkdev_get_blocks(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh, int create)
+{
+ sector_t end_block = max_block(I_BDEV(inode));
+ unsigned long max_blocks = bh->b_size >> inode->i_blkbits;
+
+ if ((iblock + max_blocks) > end_block) {
+ max_blocks = end_block - iblock;
+ if ((long)max_blocks <= 0) {
+ if (create)
+ return -EIO; /* write fully beyond EOF */
+ /*
+ * It is a read which is fully beyond EOF. We return
+ * a !buffer_mapped buffer
+ */
+ max_blocks = 0;
+ }
+ }
+
+ bh->b_bdev = I_BDEV(inode);
+ bh->b_blocknr = iblock;
+ bh->b_size = max_blocks << inode->i_blkbits;
+ if (max_blocks)
+ set_buffer_mapped(bh);
+ return 0;
+}
+
+static ssize_t
+blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
+ loff_t offset, unsigned long nr_segs)
+{
+ struct file *file = iocb->ki_filp;
+ struct inode *inode = file->f_mapping->host;
+
+ return blockdev_direct_IO_no_locking(rw, iocb, inode, I_BDEV(inode),
+ iov, offset, nr_segs, blkdev_get_blocks, NULL);
+}
+
+#if 0
static int blk_end_aio(struct bio *bio, unsigned int bytes_done, int error)
{
struct kiocb *iocb = bio->bi_private;
@@ -323,6 +363,7 @@ backout:
return PTR_ERR(page);
goto completion;
}
+#endif
static int blkdev_writepage(struct page *page, struct writeback_control *wbc)
{
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 98338a569dc0..c59d6fbb7a6b 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -269,7 +269,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
"acc=%x, error=%d\n",
dentry->d_parent->d_name.name,
dentry->d_name.name,
- access, (error >> 24));
+ access, ntohl(error));
}
out:
if (exp && !IS_ERR(exp))
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index e1216364d191..d026b4f27757 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -306,8 +306,8 @@ int ocfs2_journal_dirty_data(handle_t *handle,
* for the dinode, one for the new block. */
#define OCFS2_SIMPLE_DIR_EXTEND_CREDITS (2)
-/* file update (nlink, etc) + dir entry block */
-#define OCFS2_LINK_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1)
+/* file update (nlink, etc) + directory mtime/ctime + dir entry block */
+#define OCFS2_LINK_CREDITS (2*OCFS2_INODE_UPDATE_CREDITS + 1)
/* inode + dir inode (if we unlink a dir), + dir entry block + orphan
* dir inode link */
diff --git a/fs/proc/base.c b/fs/proc/base.c
index ff7a66850602..1a979ea3b379 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2328,13 +2328,23 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
{
struct dentry *dentry = filp->f_path.dentry;
struct inode *inode = dentry->d_inode;
- struct task_struct *leader = get_proc_task(inode);
+ struct task_struct *leader = NULL;
struct task_struct *task;
int retval = -ENOENT;
ino_t ino;
int tid;
unsigned long pos = filp->f_pos; /* avoiding "long long" filp->f_pos */
+ task = get_proc_task(inode);
+ if (!task)
+ goto out_no_task;
+ rcu_read_lock();
+ if (pid_alive(task)) {
+ leader = task->group_leader;
+ get_task_struct(leader);
+ }
+ rcu_read_unlock();
+ put_task_struct(task);
if (!leader)
goto out_no_task;
retval = 0;
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