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Write cache bugfix from Rasmus Borup Hansen, system adm. Email: rbh@math.ku.dk

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Jeremy.
(This used to be commit 971b82beb7b99a3ae692ca147cce9ce4b5bce39c)
This commit is contained in:
Jeremy Allison 2002-10-03 18:11:12 +00:00
parent 49cd711d49
commit 1252fda04f
1 changed files with 13 additions and 0 deletions
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13
source3/smbd/fileio.c
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@ -440,6 +440,19 @@ len = %u\n",fsp->fd, (double)pos, (unsigned int)n, (double)wcp->offset, (unsigne
} else {
ssize_t ret = real_write_file(fsp, data, pos, n);
/*
* If the write overlaps the entire cache, then
* discard the current contents of the cache.
* Fix from Rasmus Borup Hansen rbh@math.ku.dk.
*/
if ((pos <= wcp->offset) &&
(pos + n >= wcp->offset + wcp->data_size) ) {
DEBUG(9,("write_file: discarding overwritten write \
cache: fd = %d, off=%.0f, size=%u\n", fsp->fd, (double)wcp->offset, (unsigned int)wcp->data_size ));
wcp->data_size = 0;
}
DO_PROFILE_INC(writecache_direct_writes);
if (ret == -1)
return ret;