| commit | 3f9b4cfa354fa847568bf60bb411929ef858e6a5 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 25 Jan 2009 07:08:46 +0000 (24 23:08 -0800) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sun, 25 Jan 2009 07:08:46 +0000 (24 23:08 -0800) | ||
| tree | fc097512529ccd30e8b6cf4c8466551cc3dfaedf | treesnapshot (tar.gz zip) |
| parent | 009ec64495e17f64d51264e475a8d28c10d665f2 | commitdiff |
HAMMER VFS - Fix deadlock in rmdir
hammer_vop_rmdir() maintains a cursor at the directory entry being deleted,
and then calls hammer_ip_check_directory_empty() to check if the directory
is empty. The check code creates a second, nested cursor.
Any locks on the first cursor must be released in order to allow the
function to block while scanning the second cursor to avoid possible
deadlocks.
hammer_vop_rmdir() maintains a cursor at the directory entry being deleted,
and then calls hammer_ip_check_directory_empty() to check if the directory
is empty. The check code creates a second, nested cursor.
Any locks on the first cursor must be released in order to allow the
function to block while scanning the second cursor to avoid possible
deadlocks.
| sys/vfs/hammer/hammer_vnops.c | diffblobblamehistory |