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| author | Andrey Vagin <avagin@openvz.org> | 2016-06-24 14:50:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-06-24 17:23:52 -0700 |
| commit | 5a9294e5c535deab69831076af15cd35e1c95f8b (patch) | |
| tree | a13064c643cfc7e5ea8af20fdb20d971f67329f4 /fs/autofs4/waitq.c | |
| parent | 8285027fc479949a7a166bc1b26ce57e894878a7 (diff) | |
| download | linux-5a9294e5c535deab69831076af15cd35e1c95f8b.tar.gz linux-5a9294e5c535deab69831076af15cd35e1c95f8b.tar.bz2 linux-5a9294e5c535deab69831076af15cd35e1c95f8b.zip | |
autofs: don't get stuck in a loop if vfs_write() returns an error
__vfs_write() returns a negative value in a error case.
Link: http://lkml.kernel.org/r/20160616083108.6278.65815.stgit@pluto.themaw.net
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/autofs4/waitq.c')
| -rw-r--r-- | fs/autofs4/waitq.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c index 0146d911f468..631f1554c87b 100644 --- a/fs/autofs4/waitq.c +++ b/fs/autofs4/waitq.c @@ -66,11 +66,12 @@ static int autofs4_write(struct autofs_sb_info *sbi, set_fs(KERNEL_DS); mutex_lock(&sbi->pipe_mutex); - wr = __vfs_write(file, data, bytes, &file->f_pos); - while (bytes && wr) { + while (bytes) { + wr = __vfs_write(file, data, bytes, &file->f_pos); + if (wr <= 0) + break; data += wr; bytes -= wr; - wr = __vfs_write(file, data, bytes, &file->f_pos); } mutex_unlock(&sbi->pipe_mutex); |