glusterfs.git/xlators/performance/quick-read, branch v2.0.7

performance/quick-read: refine logic of qr_readv.

2009-09-22T13:14:01+00:00

- An extra vector was being allocated when the number of bytes being read
    from cache were equal to the iobuf size.

Signed-off-by: Anand V. Avati 

BUG: 274 (Memory corruption in Apache running on booster)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=274

performance/quick-read: optimizations to lookup

2009-09-22T13:13:57+00:00

- qr_lookup not to send request for file-content if the cache is already
    present during revalidates.
  - flush the cache in qr_lookup_cbk if the cache is not in sync with the file.

Signed-off-by: Anand V. Avati 

BUG: 273 (Code review and optimize quick-read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273

performance/quick-read: make a comment more explicit.

2009-09-22T13:13:54+00:00

Signed-off-by: Anand V. Avati 

BUG: 273 (Code review and optimize quick-read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273

performance/quick-read: checking for qr_file in inode-context and creating if not present should be atomic.

2009-09-22T13:13:51+00:00

Signed-off-by: Anand V. Avati 

BUG: 273 (Code review and optimize quick-read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273

performance/quick-read: refine the logic in qr_lookup.

2009-09-22T13:13:47+00:00

- a new size has to be set in xattr_req only
    if (quick-read is configured with a maximum file size limit
        && ((xattr_req does not have a request key for getting content)
             || (the size requested in xattr_req is not equal to configured
                 size in quick-read)))

Signed-off-by: Anand V. Avati 

BUG: 273 (Code review and optimize quick-read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=273

performance/quick-read: access glusterfs_ctx from xlator instead of using glusterfs_get_ctx

2009-09-17T08:28:29+00:00

- since glusterfs_get_ctx gets the global context pointer, there can be
    problems in a multithreaded application running on libglusterfsclient
    doing multiple glusterfs_inits. Hence use context specific to the
    current xlator tree stored in each xlator object.

Signed-off-by: Anand V. Avati 

BUG: 240 (segmentation fault in qr_readv)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=240

backporting quick read to 2.0

2009-09-15T06:33:08+00:00

Signed-off-by: Anand V. Avati 

BUG: 238 (Backport quick-read to 2.0 release)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=238