A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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missing bits of "splice: fix racy pipe->buffers uses"

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that commit has fixed only the parts of that mess in fs/splice.c itself;
there had been more in several other ->splice_read() instances...

Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2014-04-11 12:01:03 -04:00
commit a786c06d9f
3 changed files with 4 additions and 4 deletions
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2
mm/shmem.c
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@ -1613,7 +1613,7 @@ static ssize_t shmem_file_splice_read(struct file *in, loff_t *ppos,
index = *ppos >> PAGE_CACHE_SHIFT;
loff = *ppos & ~PAGE_CACHE_MASK;
req_pages = (len + loff + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
nr_pages = min(req_pages, pipe->buffers);
nr_pages = min(req_pages, spd.nr_pages_max);
spd.nr_pages = find_get_pages_contig(mapping, index,
nr_pages, spd.pages);