remove useless mnt_want_write call in xfs_write
When mnt_want_write was introduced a call to it was added around xfs_ichgtime, but there is no need for this because a file can't be open read/write on a r/o mount, and a mount can't degrade r/o while we still have files open for writing. As the mnt_want_write changes were never merged into the CVS tree this patch is for mainline only. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Niv Sardi <xaiki@sgi.com>
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@ -51,7 +51,6 @@
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#include "xfs_vnodeops.h"
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#include <linux/capability.h>
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#include <linux/mount.h>
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#include <linux/writeback.h>
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@ -668,15 +667,8 @@ start:
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if (new_size > xip->i_size)
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xip->i_new_size = new_size;
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/*
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* We're not supposed to change timestamps in readonly-mounted
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* filesystems. Throw it away if anyone asks us.
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*/
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if (likely(!(ioflags & IO_INVIS) &&
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!mnt_want_write(file->f_path.mnt))) {
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if (likely(!(ioflags & IO_INVIS)))
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xfs_ichgtime(xip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
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mnt_drop_write(file->f_path.mnt);
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}
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/*
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* If the offset is beyond the size of the file, we have a couple
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