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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-05-22 10:22:20 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-07-10 23:40:23 -0400 |
| commit | d9df8d6b38228afab519094048aa2c082b0b2cf4 (patch) | |
| tree | 7bbe92c2ac8e3eab2179cd194dccc8f30bf63df5 /fs/nfs/direct.c | |
| parent | 070ea60214c1894c9eec86ca9aa5dff57a5ab525 (diff) | |
| download | linux-d9df8d6b38228afab519094048aa2c082b0b2cf4.tar.gz linux-d9df8d6b38228afab519094048aa2c082b0b2cf4.tar.bz2 linux-d9df8d6b38228afab519094048aa2c082b0b2cf4.zip | |
NFS: Don't fail an O_DIRECT read/write if get_user_pages() returns pages
There is no need to fail the entire O_DIRECT read/write just because
get_user_pages() returned fewer pages than we requested.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/direct.c')
| -rw-r--r-- | fs/nfs/direct.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 4c97e55e86ee..f1b153ad645b 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -295,9 +295,14 @@ static ssize_t nfs_direct_read_schedule(struct nfs_direct_req *dreq, unsigned lo break; } if ((unsigned)result < data->npages) { - nfs_direct_release_pages(data->pagevec, result); - nfs_readdata_release(data); - break; + bytes = result * PAGE_SIZE; + if (bytes <= pgbase) { + nfs_direct_release_pages(data->pagevec, result); + nfs_readdata_release(data); + break; + } + bytes -= pgbase; + data->npages = result; } get_dreq(dreq); @@ -630,9 +635,14 @@ static ssize_t nfs_direct_write_schedule(struct nfs_direct_req *dreq, unsigned l break; } if ((unsigned)result < data->npages) { - nfs_direct_release_pages(data->pagevec, result); - nfs_writedata_release(data); - break; + bytes = result * PAGE_SIZE; + if (bytes <= pgbase) { + nfs_direct_release_pages(data->pagevec, result); + nfs_writedata_release(data); + break; + } + bytes -= pgbase; + data->npages = result; } get_dreq(dreq); |