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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 21:15:13 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-07 21:15:13 +0200
commit41bc10cabe96bbd0ff3e2813d15f9070bff57a03 (patch)
treed75b65f4087e3ee68453c0b5d7aa5d698056c03a /arch/um
parentMerge tag 'xfs-5.2-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux (diff)
parentvfs: pass ppos=NULL to .read()/.write() of FMODE_STREAM files (diff)
downloadlinux-41bc10cabe96bbd0ff3e2813d15f9070bff57a03.tar.xz
linux-41bc10cabe96bbd0ff3e2813d15f9070bff57a03.zip
Merge tag 'stream_open-5.2' of https://lab.nexedi.com/kirr/linux
Pull stream_open conversion from Kirill Smelkov: - remove unnecessary double nonseekable_open from drivers/char/dtlk.c as noticed by Pavel Machek while reviewing nonseekable_open -> stream_open mass conversion. - the mass conversion patch promised in commit 10dce8af3422 ("fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock") and is automatically generated by running $ make coccicheck MODE=patch COCCI=scripts/coccinelle/api/stream_open.cocci I've verified each generated change manually - that it is correct to convert - and each other nonseekable_open instance left - that it is either not correct to convert there, or that it is not converted due to current stream_open.cocci limitations. More details on this in the patch. - finally, change VFS to pass ppos=NULL into .read/.write for files that declare themselves streams. It was suggested by Rasmus Villemoes and makes sure that if ppos starts to be erroneously used in a stream file, such bug won't go unnoticed and will produce an oops instead of creating illusion of position change being taken into account. Note: this patch does not conflict with "fuse: Add FOPEN_STREAM to use stream_open()" that will be hopefully coming via FUSE tree, because fs/fuse/ uses new-style .read_iter/.write_iter, and for these accessors position is still passed as non-pointer kiocb.ki_pos . * tag 'stream_open-5.2' of https://lab.nexedi.com/kirr/linux: vfs: pass ppos=NULL to .read()/.write() of FMODE_STREAM files *: convert stream-like files from nonseekable_open -> stream_open dtlk: remove double call to nonseekable_open
Diffstat (limited to 'arch/um')
-rw-r--r--arch/um/drivers/harddog_kern.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c
index 6d381279b362..000cb69ba0bc 100644
--- a/arch/um/drivers/harddog_kern.c
+++ b/arch/um/drivers/harddog_kern.c
@@ -85,7 +85,7 @@ static int harddog_open(struct inode *inode, struct file *file)
timer_alive = 1;
spin_unlock(&lock);
mutex_unlock(&harddog_mutex);
- return nonseekable_open(inode, file);
+ return stream_open(inode, file);
err:
spin_unlock(&lock);
mutex_unlock(&harddog_mutex);