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authorEric Van Hensbergen <ericvh@gmail.com>2009-11-02 08:39:28 -0600
committerEric Van Hensbergen <ericvh@gmail.com>2009-11-02 08:43:45 -0600
commit3e2796a90cf349527e50b3bc4d0b2f4019b1ce7a (patch)
tree80bddc0f5d36a589db5a77b9b60e4c94c75994ed /include/scsi
parent9p: fix readlink (diff)
downloadlinux-dev-3e2796a90cf349527e50b3bc4d0b2f4019b1ce7a.tar.xz
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9p: fix readdir corner cases
The patch below also addresses a couple of other corner cases in readdir seen with a large (e.g. 64k) msize. I'm not sure what people think of my co-opting of fid->aux here. I'd be happy to rework if there's a better way. When the size of the user supplied buffer passed to readdir is smaller than the data returned in one go by the 9P read request, v9fs_dir_readdir() currently discards extra data so that, on the next call, a 9P read request will be issued with offset < previous offset + bytes returned, which voilates the constraint described in paragraph 3 of read(5) description. This patch preseves the leftover data in fid->aux for use in the next call. Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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