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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-26 15:48:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-26 17:22:07 -0700
commit9ec3a646fe09970f801ab15e0f1694060b9f19af (patch)
tree697058ca7e1671eda180a3ccc62445686fbc1a31 /include
parentc8b3fd0ce313443731e8fd6d5a541085eb465f99 (diff)
parent3cab989afd8d8d1bc3d99fef0e7ed87c31e7b647 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull fourth vfs update from Al Viro: "d_inode() annotations from David Howells (sat in for-next since before the beginning of merge window) + four assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RCU pathwalk breakage when running into a symlink overmounting something fix I_DIO_WAKEUP definition direct-io: only inc/dec inode->i_dio_count for file systems fs/9p: fix readdir() VFS: assorted d_backing_inode() annotations VFS: fs/inode.c helpers: d_inode() annotations VFS: fs/cachefiles: d_backing_inode() annotations VFS: fs library helpers: d_inode() annotations VFS: assorted weird filesystems: d_inode() annotations VFS: normal filesystems (and lustre): d_inode() annotations VFS: security/: d_inode() annotations VFS: security/: d_backing_inode() annotations VFS: net/: d_inode() annotations VFS: net/unix: d_backing_inode() annotations VFS: kernel/: d_inode() annotations VFS: audit: d_backing_inode() annotations VFS: Fix up some ->d_inode accesses in the chelsio driver VFS: Cachefiles should perform fs modifications on the top layer only VFS: AF_UNIX sockets should call mknod on the top layer only
Diffstat (limited to 'include')
-rw-r--r--include/linux/fs.h31
-rw-r--r--include/trace/events/btrfs.h4
-rw-r--r--include/trace/events/ext3.h16
-rw-r--r--include/trace/events/ext4.h16
4 files changed, 47 insertions, 20 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index c7496f263860..35ec87e490b1 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1820,7 +1820,7 @@ struct super_operations {
#define I_SYNC (1 << __I_SYNC)
#define I_REFERENCED (1 << 8)
#define __I_DIO_WAKEUP 9
-#define I_DIO_WAKEUP (1 << I_DIO_WAKEUP)
+#define I_DIO_WAKEUP (1 << __I_DIO_WAKEUP)
#define I_LINKABLE (1 << 10)
#define I_DIRTY_TIME (1 << 11)
#define __I_DIRTY_TIME_EXPIRED 12
@@ -2644,6 +2644,9 @@ enum {
/* filesystem can handle aio writes beyond i_size */
DIO_ASYNC_EXTEND = 0x04,
+
+ /* inode/fs/bdev does not need truncate protection */
+ DIO_SKIP_DIO_COUNT = 0x08,
};
void dio_end_io(struct bio *bio, int error);
@@ -2666,7 +2669,31 @@ static inline ssize_t blockdev_direct_IO(struct kiocb *iocb,
#endif
void inode_dio_wait(struct inode *inode);
-void inode_dio_done(struct inode *inode);
+
+/*
+ * inode_dio_begin - signal start of a direct I/O requests
+ * @inode: inode the direct I/O happens on
+ *
+ * This is called once we've finished processing a direct I/O request,
+ * and is used to wake up callers waiting for direct I/O to be quiesced.
+ */
+static inline void inode_dio_begin(struct inode *inode)
+{
+ atomic_inc(&inode->i_dio_count);
+}
+
+/*
+ * inode_dio_end - signal finish of a direct I/O requests
+ * @inode: inode the direct I/O happens on
+ *
+ * This is called once we've finished processing a direct I/O request,
+ * and is used to wake up callers waiting for direct I/O to be quiesced.
+ */
+static inline void inode_dio_end(struct inode *inode)
+{
+ if (atomic_dec_and_test(&inode->i_dio_count))
+ wake_up_bit(&inode->i_state, __I_DIO_WAKEUP);
+}
extern void inode_set_flags(struct inode *inode, unsigned int flags,
unsigned int mask);
diff --git a/include/trace/events/btrfs.h b/include/trace/events/btrfs.h
index 572e6503394a..7f79cf459591 100644
--- a/include/trace/events/btrfs.h
+++ b/include/trace/events/btrfs.h
@@ -407,10 +407,10 @@ TRACE_EVENT(btrfs_sync_file,
TP_fast_assign(
struct dentry *dentry = file->f_path.dentry;
- struct inode *inode = dentry->d_inode;
+ struct inode *inode = d_inode(dentry);
__entry->ino = inode->i_ino;
- __entry->parent = dentry->d_parent->d_inode->i_ino;
+ __entry->parent = d_inode(dentry->d_parent)->i_ino;
__entry->datasync = datasync;
__entry->root_objectid =
BTRFS_I(inode)->root->root_key.objectid;
diff --git a/include/trace/events/ext3.h b/include/trace/events/ext3.h
index 7f20707849bb..fc733d28117a 100644
--- a/include/trace/events/ext3.h
+++ b/include/trace/events/ext3.h
@@ -439,10 +439,10 @@ TRACE_EVENT(ext3_sync_file_enter,
TP_fast_assign(
struct dentry *dentry = file->f_path.dentry;
- __entry->dev = dentry->d_inode->i_sb->s_dev;
- __entry->ino = dentry->d_inode->i_ino;
+ __entry->dev = d_inode(dentry)->i_sb->s_dev;
+ __entry->ino = d_inode(dentry)->i_ino;
__entry->datasync = datasync;
- __entry->parent = dentry->d_parent->d_inode->i_ino;
+ __entry->parent = d_inode(dentry->d_parent)->i_ino;
),
TP_printk("dev %d,%d ino %lu parent %ld datasync %d ",
@@ -710,9 +710,9 @@ TRACE_EVENT(ext3_unlink_enter,
TP_fast_assign(
__entry->parent = parent->i_ino;
- __entry->ino = dentry->d_inode->i_ino;
- __entry->size = dentry->d_inode->i_size;
- __entry->dev = dentry->d_inode->i_sb->s_dev;
+ __entry->ino = d_inode(dentry)->i_ino;
+ __entry->size = d_inode(dentry)->i_size;
+ __entry->dev = d_inode(dentry)->i_sb->s_dev;
),
TP_printk("dev %d,%d ino %lu size %lld parent %ld",
@@ -734,8 +734,8 @@ TRACE_EVENT(ext3_unlink_exit,
),
TP_fast_assign(
- __entry->ino = dentry->d_inode->i_ino;
- __entry->dev = dentry->d_inode->i_sb->s_dev;
+ __entry->ino = d_inode(dentry)->i_ino;
+ __entry->dev = d_inode(dentry)->i_sb->s_dev;
__entry->ret = ret;
),
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 47fca36ee426..08ec3dd27630 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -872,10 +872,10 @@ TRACE_EVENT(ext4_sync_file_enter,
TP_fast_assign(
struct dentry *dentry = file->f_path.dentry;
- __entry->dev = dentry->d_inode->i_sb->s_dev;
- __entry->ino = dentry->d_inode->i_ino;
+ __entry->dev = d_inode(dentry)->i_sb->s_dev;
+ __entry->ino = d_inode(dentry)->i_ino;
__entry->datasync = datasync;
- __entry->parent = dentry->d_parent->d_inode->i_ino;
+ __entry->parent = d_inode(dentry->d_parent)->i_ino;
),
TP_printk("dev %d,%d ino %lu parent %lu datasync %d ",
@@ -1453,10 +1453,10 @@ TRACE_EVENT(ext4_unlink_enter,
),
TP_fast_assign(
- __entry->dev = dentry->d_inode->i_sb->s_dev;
- __entry->ino = dentry->d_inode->i_ino;
+ __entry->dev = d_inode(dentry)->i_sb->s_dev;
+ __entry->ino = d_inode(dentry)->i_ino;
__entry->parent = parent->i_ino;
- __entry->size = dentry->d_inode->i_size;
+ __entry->size = d_inode(dentry)->i_size;
),
TP_printk("dev %d,%d ino %lu size %lld parent %lu",
@@ -1477,8 +1477,8 @@ TRACE_EVENT(ext4_unlink_exit,
),
TP_fast_assign(
- __entry->dev = dentry->d_inode->i_sb->s_dev;
- __entry->ino = dentry->d_inode->i_ino;
+ __entry->dev = d_inode(dentry)->i_sb->s_dev;
+ __entry->ino = d_inode(dentry)->i_ino;
__entry->ret = ret;
),

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