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| author | Anton Altaparmakov <aia21@cam.ac.uk> | 2007-11-03 07:38:59 +0000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-03 12:27:21 -0700 |
| commit | ebab89909e0dc716282d5e7f6e73a3155fe66d4a (patch) | |
| tree | 8cee9ff6f9e0a08c6f08853e38e563514e92a99e /fs/ntfs/attrib.c | |
| parent | 74521c28e550c4ec265cda14114bd9b908e9de34 (diff) | |
| download | linux-ebab89909e0dc716282d5e7f6e73a3155fe66d4a.tar.bz2 | |
NTFS: Fix read regression.
The regression was caused by:
commit[a32ea1e1f925399e0d81ca3f7394a44a6dafa12c] Fix read/truncate race
This causes ntfs_readpage() to be called for a zero i_size inode, which
failed when the file was compressed and non-resident.
Thanks a lot to Mike Galbraith for reporting the issue and tracking down
the commit that caused the regression.
Looking into it I found three bugs which the patch fixes.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Tested-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ntfs/attrib.c')
| -rw-r--r-- | fs/ntfs/attrib.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/fs/ntfs/attrib.c b/fs/ntfs/attrib.c index 92dabdcf2b80..50d3b0c258e3 100644 --- a/fs/ntfs/attrib.c +++ b/fs/ntfs/attrib.c @@ -179,10 +179,7 @@ int ntfs_map_runlist_nolock(ntfs_inode *ni, VCN vcn, ntfs_attr_search_ctx *ctx) * ntfs_mapping_pairs_decompress() fails. */ end_vcn = sle64_to_cpu(a->data.non_resident.highest_vcn) + 1; - if (!a->data.non_resident.lowest_vcn && end_vcn == 1) - end_vcn = sle64_to_cpu(a->data.non_resident.allocated_size) >> - ni->vol->cluster_size_bits; - if (unlikely(vcn >= end_vcn)) { + if (unlikely(vcn && vcn >= end_vcn)) { err = -ENOENT; goto err_out; } |