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| author | Artem B. Bityuckiy <dedekind@infradead.org> | 2005-04-09 12:47:03 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 13:16:47 +0200 |
| commit | 8557fd51c22e4c2109f062decd19de439061ceae (patch) | |
| tree | 66884a832e912decd06a8441db05fd78ec8e3e6e /fs/jffs2/nodelist.h | |
| parent | [MTD] DiskOnChip: Add some comments (diff) | |
| download | linux-8557fd51c22e4c2109f062decd19de439061ceae.tar.xz linux-8557fd51c22e4c2109f062decd19de439061ceae.zip | |
[JFFS2] Fix race in garbage collector
Fix the race problem described here:
http://lists.infradead.org/pipermail/linux-mtd/2005-April/012361.html
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs/jffs2/nodelist.h')
| -rw-r--r-- | fs/jffs2/nodelist.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h index 57f675c2c97f..a65539f28b06 100644 --- a/fs/jffs2/nodelist.h +++ b/fs/jffs2/nodelist.h @@ -7,7 +7,7 @@ * * For licensing information, see the file 'LICENCE' in this directory. * - * $Id: nodelist.h,v 1.128 2005/02/27 23:01:32 dwmw2 Exp $ + * $Id: nodelist.h,v 1.130 2005/04/09 10:46:59 dedekind Exp $ * */ @@ -363,6 +363,18 @@ static inline struct jffs2_node_frag *frag_first(struct rb_root *root) node = node->rb_left; return rb_entry(node, struct jffs2_node_frag, rb); } + +static inline struct jffs2_node_frag *frag_last(struct rb_root *root) +{ + struct rb_node *node = root->rb_node; + + if (!node) + return NULL; + while(node->rb_right) + node = node->rb_right; + return rb_entry(node, struct jffs2_node_frag, rb); +} + #define rb_parent(rb) ((rb)->rb_parent) #define frag_next(frag) rb_entry(rb_next(&(frag)->rb), struct jffs2_node_frag, rb) #define frag_prev(frag) rb_entry(rb_prev(&(frag)->rb), struct jffs2_node_frag, rb) |