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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2008-03-04 08:08:05 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-03-04 08:08:05 -0800
commitce932967b9f77c130d4936d1e20d619a628ae08f (patch)
treeaf0274e83664d9563468f0647b178427d3b18560 /fs
parent8727e28ddebb031d80b5e261c98c24f1dcb9a82f (diff)
parentcc66b4512cae8df4ed1635483210aabf7690ec27 (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: fix blkdev_issue_flush() not detecting and passing EOPNOTSUPP back block: fix shadowed variable warning in blk-map.c block: remove extern on function definition cciss: remove READ_AHEAD define and use block layer defaults make cdrom.c:check_for_audio_disc() static block/genhd.c: proper externs unexport blk_rq_map_user_iov unexport blk_{get,put}_queue block/genhd.c: cleanups proper prototype for blk_dev_init() block/blk-tag.c should #include "blk.h" Fix DMA access of block device in 64-bit kernel on some non-x86 systems with 4GB or upper 4GB memory block: separate out padding from alignment block: restore the meaning of rq->data_len to the true data length resubmit: cciss: procfs updates to display info about many splice: only return -EAGAIN if there's hope of more data block: fix kernel-docbook parameters and files
Diffstat (limited to 'fs')
-rw-r--r--fs/proc/proc_misc.c3
-rw-r--r--fs/splice.c12
2 files changed, 9 insertions, 6 deletions
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 468805d40e2..2d563979cb0 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -32,6 +32,7 @@
#include <linux/interrupt.h>
#include <linux/swap.h>
#include <linux/slab.h>
+#include <linux/genhd.h>
#include <linux/smp.h>
#include <linux/signal.h>
#include <linux/module.h>
@@ -377,7 +378,6 @@ static int stram_read_proc(char *page, char **start, off_t off,
#endif
#ifdef CONFIG_BLOCK
-extern const struct seq_operations partitions_op;
static int partitions_open(struct inode *inode, struct file *file)
{
return seq_open(file, &partitions_op);
@@ -389,7 +389,6 @@ static const struct file_operations proc_partitions_operations = {
.release = seq_release,
};
-extern const struct seq_operations diskstats_op;
static int diskstats_open(struct inode *inode, struct file *file)
{
return seq_open(file, &diskstats_op);
diff --git a/fs/splice.c b/fs/splice.c
index 9b559ee711a..0670c915cd3 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1669,6 +1669,13 @@ static int link_pipe(struct pipe_inode_info *ipipe,
i++;
} while (len);
+ /*
+ * return EAGAIN if we have the potential of some data in the
+ * future, otherwise just return 0
+ */
+ if (!ret && ipipe->waiting_writers && (flags & SPLICE_F_NONBLOCK))
+ ret = -EAGAIN;
+
inode_double_unlock(ipipe->inode, opipe->inode);
/*
@@ -1709,11 +1716,8 @@ static long do_tee(struct file *in, struct file *out, size_t len,
ret = link_ipipe_prep(ipipe, flags);
if (!ret) {
ret = link_opipe_prep(opipe, flags);
- if (!ret) {
+ if (!ret)
ret = link_pipe(ipipe, opipe, len, flags);
- if (!ret && (flags & SPLICE_F_NONBLOCK))
- ret = -EAGAIN;
- }
}
}